BRK Ghost Review

Okay, I'm just a few days shy of 3 months with the Ghost. I've been wanting to do a post about "problems" or personal complaints that I've had with the gun, and there was some discussion about that today so now's as good a time as any.

I guess I'll address and add my thoughts to the other posts from the last 48hours first...


For the whole story, here is that conversation: https://www.airgunnation.com/threads/brk-ghost-carbine-first-3-minute-impression.1280088/

And here's the follow up post he made: https://www.airgunnation.com/threads/brk-ghost-carbine-after-the-three-minutes.1280238/

So it seems that the three main complaints that he arrived it in the first day or two of delivery were: a heavy case, misaligned parts, and small gauges.

Heavy case? I didn't get that impression with mine. The only gripe I've had with the case is that when standing up on the "feet" on the hinge side, the gun is upside down, with the weight of the gun kinda sitting on the elevation turret. Yes there's foam there, but I'd still prefer the scope to be "up" when the case is standing like that. I tried to rearrange the foam to just invert everything, but they used some serious glue. There are also some cut outs for support pillars near the latches that complicate that route.

Misaligned parts? It wasn't clear what he meant initially but I can see what MikeVV is saying here, although I never even noticed until another member edited photos with red circles. From that conversation I took that MikeVV concluded that the trigger guard, as well as the rear sub-assembly of the rifle wasn't perfectly aligned. I inspected the review Ghost and took some photos of those same areas, from various angles to show if one piece is "proud" of another.....
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We've all got our own personal level of what we find issue with. Any minimal misalignment was unnoticed by me until pointed out in that discussion. When I earlier commented about how impressed I was with machining I was referring to internal parts, trigger components, trigger cassette, valve, hammer spring adjustment, etc. Even in light of the discussion from yesterday and today about these external parts, I'm not finding these to be irritating.

Small gauges? Yeah, kinda. They're the same size gauges that are pretty standard on PCP guns, across various manufacturers. But I guess if a guy has vision problems (which I do by the way, and still haven't taken issue with the gauges) I could see how that might be a problem. Here are some gauge photos, with an MOA coin in the photo for reference.
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When considering larger gauges, there's only so much real estate to work with here. Much larger and they're going to hang off the monoblock, into either the trigger guard or the bottle/reg adjustment area.

There were some other posters making comments about mismatched colors. I'm sorry, but actually holding the gun in my hands and dragging it to various rooms with different lighting....I see the following: everything that is metal is the same black, the monoblock is of course that gray/titanium color, the composite (plastic) cheek rest and the composite buttpad and the composite grip are a slightly different black than the black of the anodized metal parts. And I took some photos of all that as well...
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Alright, it's getting late and I've got to wake up in a few hours. When I do a review gun I keep a spiral notebook next to me whenever I'm working with the gun, shooting or wrenching. I right down ALL the impressions that I have, as well as settings, dope work, chrono, etc. What makes it here on AGN is simply a cleaned up and categorized version of that notebook. The one I've got for the Ghost is a 5 subject notebook, and I'm close to finishing out the first subject, so I dunno, maybe 1/8 of an inch thick worth of paper. As I make formal posts here on AGN, I'll often clump together thought's from "the book" into the same post that have been arrived at through multiple sessions with the gun, over multiple weeks even. So, I DO have a running list of problems/niggles/gripes/complaints/annoyances that I've had in the last 3 months. I'll try to find some time to make that post in the near future.
 
Your gun is 0013 and mine is 0017, so the fit and finish should be the same. I have a HP .177 and you have a carbine .177/.22 The fitment of what has been called the trigger guard on mine is perfect on the front and off to the side by .006 at the back. A dollar bill is .0035. The picture of the gauges is not how they look because the pictures are larger than the actual size. Put the zoom to 50% and it will look more like what you actually see. It is not the size of the gauge, but how close the numbers and hashes are. These are 23mm gauges and with the black covers they are 25.55mm. The Wika 28mm with covers are 30.55mm. They will in no way interfere with anything. I also don't like the way the gun is upside down when the case is upright. It appears that all HPs have the same hammer and spring. The only issue I have is with the person that assembled my gun and cross-threaded one of the screws that holds the hammer retaining collar.
 
Yeah, the close-ups of the gauges are just that, close-ups, but no camera magnification. That's why I placed the MOA coins in there next to the gauges, to give a reference size.

Did you swap out to your cited 30.55 OD Wika gauges on yours? If so, please share us a photo when you get a second. I'm curious to see how it looks hanging off into that beveled angle that surrounds the trigger area.

The cross-threaded screw would be a BIG gripe for me, big enough that I'd be calling distributor. Luckily it could be remedied with a new rear sub-assembly. Call AOA. A replacement/new rear sub-assembly would likely be the updated hammer spring tension design too.
 
@zx10wall, regarding the measuring of the twist rate in the .22 HP barrel, as requested.....

Just got done trying to do just that, using the tight patch on a jag with a tape flag on the cleaning rod method......and I'm not too sure. Problem with measuring this way with polygonal rifling is that there's just not much lands and grooves there and you can tell when the patch "skips" the rifling, cuz it quits rotating. I repeated the process a bunch of times, and worked the math and averaged it out My best semi-educated guess is that it's 1:36", but I'm not very confident in that, cuz, as I said, the patch kept "skipping," It's dang sure seems to be something slower than LWs standard 1:17.7" cuz the "skipping" I was getting was always in the last 2 or 3 inches, and the flag had not rotated all the way around for the 20ish inches for which it had been rotating prior to the skipping. My thought there being that if it was the standard 1:17'7" it would have rotated a full 360 in the first 20ish inches.

I also compared how tight the rifling in this barrel looks (using extremely scientific eye balling it method) to a slow twist .177 poly and a standard twist rate .177 poly (both .177 polys are personal barrels that are completely separate from the Ghost testing-only used as comparison here) and it looks more similar to the slow twist .177 than it does the standard twist rate .177. That slow twist .177 poly measures out to a 1:36 and came from Tim McMurray at MAC1 airguns, who advertises and sells 1:36 "slow poly" .177 barrels on his website.

So, best guess of the twist rate for the .22 HP barrel on the review Ghost in my possession is a 1:36". (the 17 inch .177 barrel that came installed on the Ghost review gun is a very obviously/confidently measured, standard 1:17.7" 12 land and groove barrel).

The provenance of the .22 HP barrel is that it came (from BRK) with the initial test gun that Arzrover received early summer of 2022. This isn't a barrel that came out of Arzrover's personal collection of barrels, nor did he machine it himself. All of this got me curious to see what BRK is advertising, as far as twist rates, of the long .22 barrels that come in the Ghost HP, and danged if I can't find it online anywhere. I did 15-20 minutes of digging and didn't come up with much. If anybody can find a reference to what BRK is citing as the rifling specs on a .22 Ghost HP I'd love to see a link.
 
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Well, subtracting the min from the max that you gave I'm seeing a 17fps spread. Which is just fine, especially considering that you have the Ghost HP and it has that heavier hammer and hammer spring in it. Play with one of the ballistic apps a bit and you'll see that a 17fps spread hardly effects the impact point at all, even out to 100 yards. The wind and pellet to pellet variation and the human factor are all bigger factors than that 17fps spread.

As for why hitting the valve harder (power wheel adjustments) isn't changing the fps much, the low reg is the limiting factor here. With that low of a reg it doesnt look like it matters how hard you hit it, you're going to be in the area of 915fps with 15.89gr hades.

Sounds like a pretty sweet tune to me. I think I'd be happy that your 50-65fpe HP can go down that low and be consistent and accurate.

Now if you're truly OCD, a lighter hammer spring might net you a more consistent extreme spread, all else the same. But play with Strelok or Shooter or Chairgun and see how little effect a 17fps spread has first. Also, swapping out the hammer spring is a few more steps than just dropping the reg pressure.
Brocock recommended dialing the pressure down to 130 bar and exchanging the hammer spring from a medium strength. It's on the way!

@Franklink - I can't remember if you had any photos on the disassembly to remove the spring. The owners manual schematics are not clear to me.
 
Brocock recommended dialing the pressure down to 130 bar and exchanging the hammer spring from a medium strength. It's on the way!

@Franklink - I can't remember if you had any photos on the disassembly to remove the spring. The owners manual schematics are not clear to me.
Yeah it's in the 15 pages somewhere.

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Quick and dirty is that there are three Allen bolts that retain the metal piece of the buttpad, the drop portion that the plastic buttpad itself is parallel to and bolted to. They're in a triangle pattern (circled in red above), bottom two more deeply recessed than the third. Seems like you might have to slide the plastic buttplate out of the way for the bottom two bolts. Take those three bolts out and the metal buttplate drops off the gun. Be careful here because the power wheel comes out too, do it over a towel or something b/c there's a ball bearing there that you don't want to lose. From there it's easy, hammer spring can simply be swapped out without needing to remove hammer or anything further. (Tilt gun up for hammer spring to come out the back, if it's hesitant to do so on its own).

This is for the original configuration gun, not sure if you've got the updated hammer tension wheel. I was told that the new hammer wheel design has a different rear subassembly. I'd assumer even that new rear sub assembly is held to the rear sub-assembly with the same three retaining bolts though.
 
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@zx10wall, regarding the measuring of the twist rate in the .22 HP barrel, as requested.....

So, best guess of the twist rate for the .22 HP barrel on the review Ghost in my possession is a 1:36". (the 17 inch .177 barrel that came installed on the Ghost review gun is a very obviously/confidently measured, standard 1:17.7" 12 land and groove barrel
Thank you, Cole. Back when AoA received their initial batch of Ghosts, Jared measured a .22 HP barrel’s twist to answer my question. Not sure how exactly he accomplished it but he came back with 1:18”. That told me that they are probably LW poly 1:17.7” twists.
 
3 Month Criticisms

About a week ago I posted that I’ve had the Ghost review gun for 3 months and that I’d share some more critical comments about what I’ve personally found issue with or thought that others might view as negative aspects. Before I do that, I want to point out that none of these are deal-breakers. Even collectively, they don’t add up to enough to outweigh my generally impressed stance on the rifle. The Ghost is an amazing gun. Lots of adjustability, great ergonomics, reliable point of impact from session to session. Established and reliable after-sales support through AOA and BRK. Repeatable fps with repeated settings. High enough level of accuracy to make it competitive in regular and high power field target. Etc, etc. etc.

Here they are….

  • Underbelly picatinny rail is too short. OEM only has 3 slots. This is a general gripe I have with all of these bottle guns. Prophet, Impact, etc. etc, many of them are this way. Dunno if they do that to ensure a future sale of an aftermarket rail, but it’s simply not long enough/not where it needs to be for the best shooting stability from a bipod. Could be considered an “industry standard” gripe, not necessarily a Ghost specific one.
  • Rear picatinny rail is too short. OEM only has 2 slots. Attaching a bag rider also causes interference with the composite buttpad unless it is raised to the top of its adjustment. I’ve taken to flipping the buttpad upside down so that I can engage the pic rail fully when using a bag-rider.
  • The buttpad is slippery. It has grooves, but the gun still slips down off the shoulder. It is also nearly flat, it has only a VERY slight curve. On arzrover’s suggestion I applied a product similar to skateboard grip tape. Cutting it carefully ensured a relatively professional-look and has greatly reduced the guns previous tendency to want to slip down out of the shoulder pocket.
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  • Excessive scope height. Even without using high mounts, that scope is WAY up there. Personally this doesn’t bug me, because it is simple to account for, but there appears to be a contingent within airgunning that REALLY values a scope mounted as close to the barrel as possible. For comparison’s sake, and to throw a numerical value on this, the scope height needed on my Veterans (another bullpup form-factor gun) for true impact points to match Strelok-predicted impact points is 2.3inches. The scope height needed for the Ghost’s true impact points to match Strelok-predicted is 3.2inches, and that’s for both the .177/20fpe (10-55 yards verified) and the .22/48-50fpe (20-140 yards verified) configurations. UTG “medium” mounts on both the Veteran and the Ghost. 30mm tubed scopes on both. Actually same scope in the same rings, Athlon Midas Tac in Medium UTG rings.
    • Note: PRS sells an aftermarket cheek riser. I’ve seen photos of it but not held nor used one. I’m not sure how that could work/be necessary. Perhaps if HIGH rings are being used? The OEM cheek riser and “medium” rings has been perfect for my anatomy (neck length, cheek bone structure, eye location, etc).
  • The need to degas air in monoblock prior to REDUCING the regulator pressure. The valved bottle helps greatly in this regard, as only the air in the plenum is lost. Much more convenient to go UP in regulator pressure. And this is also a characteristic of many guns (other brands as well) with adjustable regulators. So call it another “industry standard” gripe.
  • The presence of non-removable side picatinny rails. I personally have ZERO use for the side pic rails. I guess guys strap all kinds of lights and lasers and…. eating utensils? and such up there, but I don’t. And from what I can tell, they’re an integral part of the monoblock (ie. it’s all one piece of metal). So they can’t be removed for the weight savings for guys like me that don’t ever intend to use them.
  • The .177 barrel it came with had some scratches in the bluing at the transfer port end. There’s nothing in the block to have caused those scratches, but it came that way. Must have occurred during assembly or testing is all I can figure. Minor gripe that doesn’t affect performance in any way.
    • This barrel also needed some polishing with JB bore paste before it would produce the exceptional accuracy it is now capable of. Accuracy prior the polishing was ho-hum, as reported previously. Again, not a BRK or Ghost specific gripe, as I’ve yet to come across a Lothar Walther barrel that wasn’t improved through some careful polishing.
  • It came with a puff of air on the cheek. This was the FIRST thing to remedy. The rear-most oring that centers the barrel in the block was missing in action. Once I replaced it, puff went away. Again, this could have only occurred during assembly or testing (prior to getting to me).
  • Recessed foster fitting. This would be yet another “industry standard” gripe. The recessed foster idea is a pain in the butt. I understand the “why” is to keep it from protruding from the gun and snagging and also because a gun looks better without a foster sticking out of it somewhere, but I personally find it a hassle. I remedied this by buying a streamlined, one-piece solution with an extended female foster on end, and a simple male on the other. It LIVES on the Ghost review gun in my possession. Go back and look through the photos I’ve shared. It will be in almost all of them. (BRK supplies an extended female foster, but it just has threads on the other end, so it still needs a male foster screwed to it, or screwed into a fill-station or hose on a hand pump, etc).
  • The valve the review Ghost was sent with had a leak. Went out to the gun room one morning and the gun was empty. This had been after a tuning/chronograph session where I had degassed the gun to reduce the reg pressure. It appears that the poppet didn’t make a seal when the gun bottle was tightened back down to repressurize the monoblock. I pulled the valve and was unable to see anything amiss. Gun resealed just fine when repressurized and I shot both the low and high power field target matches with that valve. A few weeks ago it did the same thing though (didn’t want to reseal after a de-gas for reg pressure reduction), so I replaced the valve with one supplied by AOA and it has so far held air. I discussed this with AOA employees as well as arzrover (he’s been using the Ghost valve in the Delta Wolf for a couple years now) and it appears to be an isolated event. One AOA rep was thinking maybe stiction of the orings on the poppet, perhaps an oring installed on that particular valve is slightly larger and is preventing the poppet face from returning to make a seal? Paraphrasing here, but Arzrover told me he’s done that same process (degas to reduce the reg pressure) probably a collective couple of hundred times (between Delta and Ghost) and never had the issue I saw. So far this was only with the valve that came in the gun. The replacement valve has not repeated the problem. I will make future updates on the valve if the problem repeats.
    • Want to add here that both valves that I’ve played with produce the same fps with repeated settings. I thought it interesting (and kinda cool) that a completely different valve could be swapped into the gun, and all the chrono data gathered from the previous valve is still useful.
  • Trigger won’t go light enough (for my preferences) without adjustments beyond intended ones. The specimen in my possession would go down to about 1lb, 3-4ounces with simple adjustments, and that was the nadir of trigger pull weight. Of course further reduction can be had, but that entails swapping of springs and/or cutting off spring coils. Mine is now down at around 6 or 7 ounces and quite predictable/enjoyable. But don’t expect to get it that low by simply making adjustments with allen keys. Industry standard here as well-I’ve heard similar situations referred to as the “lawyer springs” in other guns.
  • All the drama surrounding the original design of the power wheel was unfortunate. Yes, the end result appears to be an improvement in design over the first iteration, but seeing and dealing with the politics frustrates me. The fall-out of all that lands on the “negative” side of the score-sheet for my personal Ghost experience, but shouldn’t be a problem for anyone not in my position of trying to analyze/review a gun with changing design parameters. In fact, I find it poetic justice that all future owners of Ghosts will benefit from a better-designed hammer spring tension adjustment specifically because of how that all went down.
The above are the “negative” impressions or experiences that I’ve had with the Ghost in the first 3 months of shooting it, and shooting it rather extensively I might add. Most are quite small niggles. Some are personal preferences. None are deal-breakers.

Current Plans

I’m very excited to continue with the Ghost experience. Loose future plans include shooting it through most of the sub 20fpe “regular” summer field target matches. That’s typically monthly matches, May through October. I also plan on competing with it as a high power .22 for the spring Xtreme Field Target matches (Jan-April). Also, last week AOA sent me the heavy hammer that comes with the Ghost HP. That prompted me to reach out to Centercut for his recommendations for .22 slugs in the 24-30grain weight. He’s more pro-slug than myself and has tested slugs in more than one Daystate gun with the Lothar polygonal barrels. So, future reports include performance analysis of the Ghost in at least 3 or 4 more XFT matches as a high power .22, and probably 5 or 6 more “regular” field target matches, as well as some slug testing. There will also be summer pdog pesting opportunities once they come out of hibernation and season opens, so I can do some reports on how it fares as a hunting/pesting rig. I just got an email from Shane @ AOA that they’re waiting on parts from England so that I can update the power wheel to the current design and report on that. I’ve also considered getting a better scope cam to share how cool it looks to watch a pellet arch up and connect with a prairie dog, but no concrete plans there.

Anyway, lots of fun plans and the sharing of the Ghost experience will continue here, with reports made as the experiences occur.
 
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Black Max is here ~ .25 Ghost HP. Trigger job done yielding a 4.5 ounce break and I did a bit of port/polish work in the barrel’s transfer port and probe.

At 150 bar reg setting, I’m getting 955 fps on max (19). Dial down to 14 for 940 fps. Down to 8 and I have 920 fps. Just got it scoped and will be testing as time permits. Love the feel, adjustability and power! Added a grip and moderator.

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Black Max is here ~ .25 Ghost HP. Trigger job done yielding a 4.5 ounce break and I did a bit of port/polish work in the barrel’s transfer port and probe.

At 150 bar reg setting, I’m getting 955 fps on max (19). Dial down to 14 for 940 fps. Down to 8 and I have 920 fps. Just got it scoped and will be testing as time permits. Love the feel, adjustability and power! Added a grip and moderator.
VERY nice Derrick! Had to swap out that trigger rod return spring to get the pull weight that low right? Are those fps results with the 34gr .25s? Or slugs? In addition to the projectile info, please keep us updated with results, your impressions, and generally anything you learn about the Ghost that you are willing to share. Yours being a .25, you'll have data for that caliber that I simply won't be able to provide to interested parties (myself being one of those interested parties, as I continue to consider making the switch to .25/34gr for my long range uses).
 
Black Max is here ~ .25 Ghost HP. Trigger job done yielding a 4.5 ounce break and I did a bit of port/polish work in the barrel’s transfer port and probe.

At 150 bar reg setting, I’m getting 955 fps on max (19). Dial down to 14 for 940 fps. Down to 8 and I have 920 fps. Just got it scoped and will be testing as time permits. Love the feel, adjustability and power! Added a grip and moderator.

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Looking good... Thats good power with the 34 grain King Heavy at 150 bar. Knowing you it won't be long before we see what 170 and/or 180 bar can do. ;) I found through my .25 RW HP that about 935 to 940 FPS worked best with the King Heavy, more than likely the barrel is the same. That scope is my favorite, the Athlon Midas BTR Gen2. Great looking gun. Can't wait to get mine. If it's as accurate as my .25 Red Wolf HP I'll be thrilled!!!
 
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VERY nice Derrick! Had to swap out that trigger rod return spring to get the pull weight that low right? Are those fps results with the 34gr .25s? Or slugs? In addition to the projectile info, please keep us updated with results, your impressions, and generally anything you learn about the Ghost that you are willing to share. Yours being a .25, you'll have data for that caliber that I simply won't be able to provide to interested parties (myself being one of those interested parties, as I continue to consider making the switch to .25/34gr for my long range uses).
Yes, this is with JSB 33.95gr pellets. I’ll get some meaningful testing done Friday at 100 yards.

Love the fact that the platform allows you to dial in for different speeds easily to test. Thumb the reg adjuster and the HS adjuster and go. Definitely needs a bag-rider for the bench though. Hoping AoA gets the Ghost specific PRS accessories soon.

Oh the trigger, I trimmed the linkage spring by 7mm. Actually, I cut 5.5mm and then buffed sharp edges away and shaped with very little heat. Doesn’t take much heat for such a small wire diameter. When compared to the stock spring I shortened by 7mm. I did change the first stage spring to one I found on Amazon which yields a 1.1 ounce first stage.
 
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