Brocock Bantam Sniper HR - Information thread

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Hmm that's very interesting on the slingshot hammer. From what all the reviews say the .177 and .22 have slingshot hammer and the .25 does not. Can someone who actually own the rifle and is not a complete novice confirm this. Well I received my Sniper today, my very first ever PCP rifle. I wanted to share some of my initial impressions, please keep in mind I'm a complete novice. I've only ever shot powder burners and a few break barrels. So initial impressions the rifle feels sturdy in hand very well balanced. I would not hesitate to take a hurried off hand shot with this. It really does shoulder and point very easily. The weight seems to rest right on the pistol grip. The ballistic polymer feels solid and does not have that hollow plastic sound. The stock on my $2800 Scar feels cheaper. I know a lot of people say the rifle has a bark to it, but I find it to be very quiet. Slight whoosh of air and then the impact of the pellet drowns it out. I placed a Dannyfl Sumo on it and boy its better than Hollywood quite. I wanted to see if my wife would be bothered if I fired it off the porch. So I had her stand behind the storm door and fired a round into the dirt. She asked me did you fire it or was that something falling out of the pecan tree. I said it was probably the pellet impacting. I asked her if she heard a whoosh sound, she answered "maybe I think so". Need I say my on how quite it is? So with the scope zeroed and using sized and weighed pellets. I was able to put three pellets through the same hole on wood, which sounded strange as the pellets entered the same hole lol. target was only about 40 feet away (distance of pecan tree to my deck. This is where the war between me and the squirrels is currently taking place. The gun arrived from AOA with only about 200 bars so I can't comment on shot count yet. AOA or the manufacture seemed to have also lubricated the bolt already. So a few negatives now, the first stage of the trigger while a super light does give you the sensation of compressing a spring, kind of grindy. It ends in a very clean and noticeable second stage stop. I will definitely have to turn down the weight on second stage though. The hammer definitely has a metal on metal feel to it, and does require some effort to cock. I don't think you will be able to maintain cheek weld and cock the rifle effectively. The gauges are a bit small and difficult to read, but are marked in 10 bar increments, which is very nice. So the beg negative is that damn $90 magazine. you can clearly see that the back and front holes don't line up on some indexed locations. While using SIZED pellets, some would fall straight though some indexed locations (only about three). Others would fit nicely with no issues. That leads me to believe all the holes weren't drilled the same. I also had a sever miss feed where the skirt of the first pellet was ruined. I ended up just using the single shot try. While it is deeply grooved I had no issues righting pellets that landed incorrectly. Overall this is a wonderful amazing rifle. It has absolutely zero recoil and is very accurate. It has boosted my confidence enough to take the war to the squirrels, man this much fun should be illegal. I always felt a bit stressed carrying around a Scar while heading to the range. All I would need is 1 trigger happy cop and its game over, but now I can get relatively trouble free trigger time in my backyard. Sorry for punctuation, spelling, grammar errors, and general crappy writing.
 
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OK so a few questions, I check the forums and for other pcp's it's OK to dry fire them, but I'm concerned with blowing to brocock breach seal. It's seems to be a big issue with this gun and I don't want to risk it being so new tho the hobby. I wanted to adjust the trigger weight, but don't want fire it with a pellet loaded. I also have some felt barrel cleaner, is this a safer alternatve? Secondly AOA also shipped mine with a regulator pressure at 150 BAR. You seem to run out of shots pretty quickly with it set that high. Ive heard of other members firing gun then quickly lowering pressure. Can you explain this in detail to me. I already understand you need to turn it CW to lower, but how much time do I have? So far the popular setting seems to be hammer spring backed all the way out and reg pressure between 120-130 bar. How much will this lower or raise fpe on JSB 18.13 dsiblos? I requested that pellet size because it also seems to be most popular and my rifle loves them. 
 
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Rico - to lower pressure, put your screw driver on the adjustment screw and apply a slight tension clockwise but not enough to turn it, THEN fire the gun (not necessary to have a pellet in the gun!) and the moment it fires, there will be an instantaneous drop in pressure, allowing you to very quickly turn the screw clockwise about 1/6 to 1/4 of a turn. It may take three, possibly four, of these procedures to drop the pressure from 150 to 120. Don't worry about dry firing the rifle - you'll be fine and quite unlikely that you will blow out the breech seal O-ring.

In discussions with brizzi, the Huma reg apparently doesn't perform as efficiently with low pressure to the regulator. So, I'd drop the reg pressure just to 135-140 and then back out the hammer tension screw to be flush with the back of the receiver. That will give you a lighter hammer cocking effort and still give enough pressure to the Huma for it to function well. Try it. And if you have a chrony, measure your results.

Or, just leave the pressure at 150 bar and back out the hammer tension screw to be flush. See how you like that.

I took my Huma pressure down to 120 and turned the hammer tension screw 1/2 back from a depth of about.065". It is performing well with 15.89 gr. But Bill thinks that more efficient performance will be had with the Huma at 135 to 140 bar and the hammer tension screw close to flush at the back of the receiver.

When raising Huma reg pressure, you can turn the screw anti-clockwise without need to fire the rifle.

Don't worry about dry firing the rifle - you'll be fine doing so. And in any event, you will need to replace the breech seal O-ring on occasion. It's easy to do. Just make sure you have some spares on hand.
 
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AoA sets the Huma reg pressure to 150 bar as a matter of course. No problem with it being at 150. No problem lowering it or raising it either. The rifle is tuned by finding the balance between Huma reg pressure and hammer tension that gives you whatever the performance is that you want, for the range that you want to shoot at, and the pellet/pellet weight you want to launch.

The Huma regulator, apparently, tends to perform more efficiently (conserves more air, surprisingly) with higher pressure and a lighter hammer tension rather than with low pressure and a heavier hammer tension.

You can play with these settings, as you wish, to achieve your unique objectives! Using a chrony of course, is extremely helpful to know what your resulting velocities are!

Personally, at present, I like mine set with a somewhat lower velocity (about 25 fpe) using 15.89 gr JSBs for lighter cocking effort, lower noise, and a relatively close range of 35 yards. I use my Red Wolf .22HP for shooting heavier pellets and longer range. But the Bantam Sniper HR can be tuned up, perhaps a bit over 40 fpe, if you want to shoot heavier pellets longer distances! It's a great rifle in that versatility, and being so easy to tune!

And we haven't even started with dialing down the power dial on the side of the rifle (Which I see as more of a quick and very temporary adjustment.)
 
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Oh to answer a previous question about the slingshot hammer. It clearly states on brococks website that they combined the Huma reg with the slingshot hammer. I also saw a interview with brocock, that said they tuned the regular and slingshot hammer to work with each at different power levels. So the sub 12 fpe will have a slightly different setup than the full power rifle. 
 
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1539347886_18956159365bc095ae59ca95.25223832_BDE470E2-29FE-47EA-A8A8-930FD0BAA321.jpeg
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My Sniper shoots the 18.1 Exacts close to 900 FPS and the 14.3 CP’s @ 960. Both really accurate. Groups shown are these pellets @ 50 yards.


 
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