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Tennessee Gun Owners Forums
Rifles
Losing MOA Accuracy over time
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<blockquote data-quote="Hunter 257W" data-source="post: 3185140" data-attributes="member: 12277"><p>I have a 22 Cheetah MkI that showed a noticable loss of accuracy at about 800 shots. It's a Remington 40X with the 27 1/2" stainless barrel that began life as a 22-250 from the factory. It was rechambered when new so never fired as a 22-250. It would originally shoot a lot of loads under 1/2" - some well under - but now will group more like 5/8 and 1/2" is just not attainable anymore. Is the barrel shot out? Obviously, you can live with the accuracy that's left in this barrel for anything other than competition. Besides the 22 Cheetah wasn't meant for competition but rather as a serious long range varmint cartridge. And that's exactly how I treated it. This gun was fired with loads chronographing from 3,900 - to a bit under 4,100ft/sec the entire time. Mostly 50, 52, 53 or 55 grain bullets. No super light weights just to get high numbers on the chronograph. I guess the question remains, how much life is left in the barrel? Will it degrade the same amount in the next 800 shots? I would expect not but then that's just my guess.</p></blockquote><p></p>
[QUOTE="Hunter 257W, post: 3185140, member: 12277"] I have a 22 Cheetah MkI that showed a noticable loss of accuracy at about 800 shots. It's a Remington 40X with the 27 1/2" stainless barrel that began life as a 22-250 from the factory. It was rechambered when new so never fired as a 22-250. It would originally shoot a lot of loads under 1/2" - some well under - but now will group more like 5/8 and 1/2" is just not attainable anymore. Is the barrel shot out? Obviously, you can live with the accuracy that's left in this barrel for anything other than competition. Besides the 22 Cheetah wasn't meant for competition but rather as a serious long range varmint cartridge. And that's exactly how I treated it. This gun was fired with loads chronographing from 3,900 - to a bit under 4,100ft/sec the entire time. Mostly 50, 52, 53 or 55 grain bullets. No super light weights just to get high numbers on the chronograph. I guess the question remains, how much life is left in the barrel? Will it degrade the same amount in the next 800 shots? I would expect not but then that's just my guess. [/QUOTE]
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Losing MOA Accuracy over time
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