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January 24, 2018, 10:41 AM | #26 | |
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Join Date: October 17, 2017
Posts: 9
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Quote:
My problem with CCI SV is that out of 5 shot group, I can normally have 4 in a half inch group but in most cases I will have one flier to make the 5 shots a whole inch group. I don't know it's the ammo or just my poor inconsistency (I started shooting last year November). I will try some other ammo. I read someone has good experience with Winchester M22, smaller group than CCI SV with bolt gun so will give it a try. My local LGS have good supply of CCI HV, CCI SV, Blazer and Win M22. |
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January 29, 2018, 01:58 PM | #27 |
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Join Date: December 14, 2004
Location: Maine
Posts: 3,694
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I hope you find a place to shoot farther than 25 yards. That gets boring after a while.
Also, shooting with a bipod and no rear bag is a limiting factor, since shoulder pressure, right hand pressure, and varied bipod stance can all affect consistency. You should get a solid front rest and rear bag, then learn how to be more consistent in your holds. Perhaps your rifle could be improved to be more consistent, once you find the ammo it likes best. Half-inch at 25 yards would be only a bit larger than 1/2" at 50 yards, which isn't bad for an unimproved sporter, but really good-shooting rifle, should shoot closer to 1/4" groups at 50 yards...outdoors, dealing with wind/mirage, etc. Also, there are some good benchrest shooting guides available on the Internet and reading them would help you to be a better shooter. Regarding .22 target ammo: I found inconsistencies in the same high-priced match ammo from lot-to-lot. Some $20/box ammo had flyers that cost points in competition, so your chances of finding $5 a box ammo to shoot consistent 1/4" groups at 50 yards is maybe 1 in 100 tries, but at 25 yards, 1/4" is quite possible with CCI SV or other similarly-priced ammo. Fiocchi Biathlon shot well in my rifles. Good luck and keep experimenting in all aspects of accuracy endeavors. |
January 30, 2018, 03:26 PM | #28 | |
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Join Date: October 17, 2017
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Quote:
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February 1, 2018, 01:19 AM | #29 |
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Join Date: May 16, 2008
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Sometimes one needs to re-zero when you change boxes of the same ammo type because they are from different runs with slightly different characteristics.
Not usually and it is often a pretty small adjustment, but it happens. |
February 8, 2018, 11:55 AM | #30 |
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Join Date: June 30, 2017
Location: SW TN
Posts: 28
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Yes, POI is different with different loads. Sometimes the same load but diff lot has to be re-zeroed. Differences in velocity and harmomics show up on target. Sometimes you get lucky and have a gun that shoots alot of diff ammo near the same POI, sometimes not.
Reguarding the 1st shot of each mag having a diff POI, it sounds like a feeding issue. Pretty common actually. For instance, the top round in the mag sitting with more of a cant than the following rounds because of bottoming your mag spring out/having the most spring pressure and the round scrapes material off as you feed it into the chamber. Or could be you settling in after the 1st shot. Best way to test it is single feed each round or shoot some mags not fully loaded and see if you still have the 1st round flyer. If you dont, its a feeding issue, if you do, it could be you.
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February 8, 2018, 12:23 PM | #31 |
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Join Date: May 16, 2008
Posts: 9,995
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Load mag all the way and chamber a round, then eject without firing. Look to see if the bullet has been damaged during feeding.
Are you putting 11 rounds in a ten round mag? Sometimes you can jam an extra round in a mag but it usually doesn't function well. |
February 9, 2018, 11:40 AM | #32 |
Senior Member
Join Date: December 14, 2004
Location: Maine
Posts: 3,694
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The first-round flyer in a 10-22 (and perhaps other semi-autos), is definitely caused by the operating handle binding the firing pin. I found that relieving the binding by filing and smoothing the handle so it slides in the bolt slot easily, eliminates the dreaded first-shot flyer.
Staking the firing pin deeper also contributes to accuracy by making a more consistent impact location on shell rims. |
February 12, 2018, 09:35 AM | #33 |
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Join Date: October 17, 2017
Posts: 9
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Thanks. I tried with another bolt rifle and there is no "first round flying away" issue so it would very much likely the mag/loading issue.
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