Burnsy 1 Posted April 14, 2014 Report Share Posted April 14, 2014 I am looking to buy a cz 455 varmit,but not sure which size barrel to get ? Is there a diffrence in accuracy and fps? Cheers Quote Link to post
Worzel40 9 Posted April 14, 2014 Report Share Posted April 14, 2014 My mate just got rid of his 16" and he dropped foxes at 120 yards so Imo, not a lot of difference. Quote Link to post
shropshire dan 467 Posted April 14, 2014 Report Share Posted April 14, 2014 Ive just got a 16inch and amazing accuracy 1/2 inch groups at 100 yards and ive only put about 300 rounds through it Quote Link to post
Burnsy 1 Posted April 14, 2014 Author Report Share Posted April 14, 2014 Nice going mate what magnification on your scope is used to achive the groups ? Quote Link to post
shropshire dan 467 Posted April 15, 2014 Report Share Posted April 15, 2014 Thanks im using 8x mag using a redfield accurange 4-12x40 have used it on 10x and 12x but I prefer lower mag. Quote Link to post
Deker 3,453 Posted April 16, 2014 Report Share Posted April 16, 2014 HMR Barrel Length vs. Velocity22 inch = 2517 fps, 103 fps spread21 inch = 2523 fps, 66 fps spread20 inch = 2515 fps, 86 fps spread19 inch = 2538 fps, 83 fps spread18 inch = 2522 fps, 41 fps spread17 inch = 2505 fps, 43 fps spread16 inch = 2492 fps, 53 fps spread15 inch = 2477 fps, 27 fps spread14 inch = 2432 fps, 70 fps spread13 inch = 2419 fps, 32 fps spread12 inch = 2387 fps, 57 fps spread11 inch = 2338 fps, 45 fps spread10 inch = 2276 fps, 45 fps spreadShamelessly stolen from Varmint Als site. Who knows about the accuracy of this, some figures seem to leave questions! Quote Link to post
kenj 131 Posted April 16, 2014 Report Share Posted April 16, 2014 My CZ 452 HMR has a 16 inch barrel. Deadly accurate at 100 yards even after 1000s of rounds. With a moderator it's still a handleable length. Quote Link to post
optelic2 48 Posted April 16, 2014 Report Share Posted April 16, 2014 Had my cz Amercian chopped from 20" to 15" its made it so much handier using from the trucks window. Like a telegraph pole at "20" with a mod on the end lol. Quote Link to post
Gloop 5 Posted April 16, 2014 Report Share Posted April 16, 2014 16 inches all the way. My longest shot was 156 yards. I had the 20" and it was just too unwieldy. Mostly I shoot at 100 yards and only miss due to my stupidity rather than the rifle. Quote Link to post
let'sshoot 11 Posted April 16, 2014 Report Share Posted April 16, 2014 I have a cz452 American in 20''. It's all I've known and haven't considered chopping it, but maybe it's worth a think now. How much do they charge to chop it and rethread it? Thanks Quote Link to post
andyf 144 Posted April 16, 2014 Report Share Posted April 16, 2014 I had a 16" CZ American 17hmr about 8 years ago, mine was excellent, I bought a dedicated 17 'Whisper' over barrel Moderator to keep it as short as possible and it was very light and handy. I didn't particularly rate the 17hmr and after trialling it for a decent time I traded it after 18 months, but that said it did what it said on the tin, very accurate and a true 150yd+ Rimfire. AndyF Quote Link to post
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