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...hammer mass) to open the valve sufficiently to get enough air to propel the projectiles fast enough to be over the bend in the speed-power curve. *** Attached below is a video from Sub12Airgunners that talks about using the idea of the speed-power curve to tune the Crown. ***** In the...

Hi, I think bchannell's advice will get you in the right ballpark. However, there are a couple of things you might want to check first. I own two Crown MkII's, one bought new and one bought used. The new one was bought almost two years ago as a 500mm .177. It came without a separate hammer...

Hi, Not an expert on the M4, but have done a lot of tuning on other FX airguns. I expect you are way off a good tune. Depending on the pellet, you should have a desired range of velocities you want to reach. For instance, the folks shooting .177 13.4gr pellets (JSB, Air Arms, FX) on the...

Sounds like you hit on a really good tune. What velocity were you getting and at what range was the target? The best source for how to tune a Crown when you are trying new pellet weights or calibers is a video by Sub12Airgunners (I will attach below). While Geoff is tuning a Sub12 ft-lb...

Mark, I bought a King in .22 with a 500mm barrel early this year. I could never get it to shoot .22 pellets worth a darn. It shot the FX Hybrids really well (at about 1050 fps, also the Zan heavier .22 slugs). To get it to shoot the 18.1 JSB pellets I put in a lighter hammer weight and...

Hi Guys, Shot this card the other day but just now getting to posting it. A 199-12X with the good ole FX Crown Mk II Green Mountain. Just 1 shot better than my best this year, but I will take it. Might have to try tomorrow to match Ed's run with his Daystar:)! Cheers, Greg Leaderboard...

Ratfink, Kraford and Lypt make the KLS-M Adjustable Stock for rifles with a Minelli Stock adjustable butt pad. The Crown Mk II laminate stocks are in that category. Cheers, Greg

I have been very successful in Hunter Class Field Target shooting a Crown Mk II with a 500mm .177 Superlight Barrel. I would be much more successful if I could ever learn to shoot offhand. It is certainly not the rifle that is keeping me off the podium🙄. Cheers, Greg

Hi, My Crown Mk II with a 500mm .22 barrel shoots the 18.1 gr pellets great! My settings for an Ave MV of 868 fps with 2.3 SD and 8 ES are: - Reg pressure to 117 bar - Internal Hammer Spring (IHS) adjuster sticking out of the carrier by 4 mm - Transfer Port Wheel to Medium - Power Wheel to 15...

Hi, Just my 2 cents, but I think you will be disappointed with a 16x scope. Not sure where you will be shooting HFT but my experience (as a relatively newbie compared to many on this forum) that many matches are shot in heavily treed areas - meaning lots of dark shadows. Most scopes tend to...

Hi Guys! It has been a while since I shot any Challenge cards as I have been concentrating on Field Target. I have done pretty well there this year (and I say shooting these targets has helped me), but my wind calls need work. So today is kind of blustery with 6-8 mph winds with gusts to...

Tommy, Sorry for the confusion. As Smok3y said the case was for "Match Grade" 8.4 gr pellets. I just liked the case and the fit with the 13.4gr was good once I glued a piece of foam into the top (to better hold the longer skirts). By the way, I tested the "Match Grade" 8.4 gr pellets...

LNIB Nightforce NX-8 4-32x50 rifle scope. The scope has only been used on a benchrest rifle - has never been out in the weather or used hunting. It is a FFP scope with ZeroStop and DigIllum reticle illumination. The fully illuminated MOAR reticle has 1 MOA hash marks. Includes NF labeled...

Tommy, For what it is worth I did a lot of testing comparing the "trash cans" to the RD's and found the "trash cans" consistently more accurate in my Crowns. That said, I would get occasional flyers with both. I don't sort or weigh the pellets, but as you do I separate out any obviously...

Ed, Sorry about Hoover. I always think of it as the end of an era when a great dog passes. They are joy and love machines who make our lives better. Congrats to both Becky and you! She must be a good sport to put up with you and all of your "big boy" toys! Cheers, Greg

...to go back to a .22 cal. Saber Tactical Picatinny Bottle Clamp. Full set of O-rings in separate packages by part number. Custom-fit FX Hard Case **** Now including Huma Avalanche 40-4 .25 Moderator **** I currently have the rifle shooting the JSB 25.39 pellets at 907 fps with an SD of 2.3...

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This listing has been renewed

Hi SOTL, As a few others have stated the hammer spring tension and reg pressure is a balancing act. If you start with a low reg pressure and a middle hammer string tension the hammer with overdrive the valve and you will have a large valve opening and a high dwell time. That combination...

Hi Guys, I haven't posted in a while as I have not been shooting as much as usual. Lots of company including kids and grand kids. Which is good of course! The only drawback is both daughters-in-law are adamant anti-gun (and don't know what an air-rifle is). So to keep the peace my wife...