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Old August 24th, 2019, 05:20 AM #11
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I think that you need to find the ammo that you gun likes the best, and then sort the shells by weight and then if you want, get one of these gauges and sort them by rim thickness and/or runout.

https://www.neiljones.com/html/rimfire_gauge.html

https://www.amazon.com/Hornady-RF17-.../dp/B000PD1XJY

http://bulletin.accurateshooter.com/...-length-gauge/

https://www.hornady.com/reloading/pr...hickness-gauge

http://www.nielsonbrothersarms.com/2...centricity.htm

https://www.ebay.com/sch/i.html?LH_C...udlo=&_fosrp=1
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Old August 25th, 2019, 01:21 AM #12
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Quote:
Originally Posted by owgriffin View Post
I have a Ruger 10/22 target model with the heavy barrel and beautiful laminated stock. It is 1 moa at 100 yards and about a half inch at 50 yards. I would not even try at 200 as there is a fair amount of drop at 100.

One of the keys is cleaning. It builds up lead/copper rapidly and you can see the groups leaning down and to the left as the barrel build up slows the rounds down. Due to the small charge and heavy barrel heat is not an issue, but you have to clean it after about 50 rounds to maintain the best accuracy. Hope that helps. Also, of course is the issue with 22 ammo. The variation between really expensive ammo and just regular ammo is huge between shots. I don't know if the issue is quality control in general or variations in the weight of the bullet, but anything less than something like the 40g CCI's has really bad variability in the charge.
Interesting on the cleaning.

When I shot on the rifle team in college, we cleaned the rifles once per year, at the end of the season. NEVER during.

No copper, as all our match ammo was lead only.
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Old August 25th, 2019, 11:05 AM #13
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Quote:
Originally Posted by Pinecone View Post
Interesting on the cleaning.

When I shot on the rifle team in college, we cleaned the rifles once per year, at the end of the season. NEVER during.

No copper, as all our match ammo was lead only.
Yeah, there are varying opinions on cleaning target rifles.

In reality, it should come down to what works best for each particular rifle.

My Walther KKM UIT looses accuracy with cleaning and takes 20 shots or so to get back in its groove.
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Old August 28th, 2019, 12:28 PM #14
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I have a Clark Custom 10-22 and it is a sub MOA but I need to run high end ammo to get there.
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Old August 28th, 2019, 09:17 PM #15
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My bolt action Walther shoots MOA with 16 cent per round Eley SubSonic Hollow Point. If memory serves it did OK with RWS R-50 @ 32 cents per round, but couldn't get below .65 MOA with any version of Tenex, even the 40 cent per round stuff. It almost punched single holes at 100 with a particular batch of the old black box Aguila target, but Aguila doesn't make that exact ammo any more

The ammo has to be good, but it doesn't have to be the most expensive; just what is right for that particular gun.
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Old August 28th, 2019, 09:51 PM #16
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I shot free-standing metallic silhouette with my Remington 597. It started out as a regular $150 rifle from Walmart. Then Rimfire Challenge speed shooting came out so Scott Volquartsen and I built it for that originally complete with one of his original stainless steel and carbon fiber tensioned barrels. Turned out really accurate but not good cycling fast at speed shooting. So dropped in a Jard match trigger at 2# (actually tested at 1.5#) and found it shot sub-MOA out to at least 50 yards using plain old CCI SV. That's when I tried it out shooting metallic silhouette and won 3 club championships in a 6 year span. Have not tried better ammo although I have some Eley in my stock. Also used that rifle to just about run the table on my club's Winchester NRA Benchrest qualification. Never tried it out to 100 yards, however, only to 50.
I would really like to have one of the Swiss Bleiker bolt guns the guy used to do all the .22LR ammo tests with on AccurateShooter.com. That test showed that better ammo shot tighter in most cases but with all rifles sometimes you find a rifle that likes something cheap on occasion.
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Old September 27th, 2019, 12:05 AM #17
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Link to one of the .22LR ammo tests on AccurateShooter.com showing various ammo in a number of different rifles, click on the rifle description in the first post to see the test results (they are shooting for group size only so they are not zeroed on the sighting dot):
http://forums.accuratereloading.com/...3/m/7531057281
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Old September 27th, 2019, 08:52 AM #18
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My custom 10/22 and CZ455 both shoot about the same with Eley Biathalon ammo, it is also is the most consistent ammo I have tested with an SD of 2.8. A dime can cover a 5 shot group with both rifles.

I shoot the MARS matches occasionally and have run the 10/22 and CZ455. I scored better with the 10/22 because I don't have to run the bolt. The 10/22 receiver is from an old carbine with KIDD internals/trigger, Boyds stock that is bedded, and Whistle Pig accu-light barrel. The CZ 455 has the WP accu-light barrel, yo dave trigger kit, and a McRee precision chassis. Both Rifles have Vortex PST 5-25 gen2 scopes.
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Old October 3rd, 2019, 08:52 AM #19
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Quote:
Originally Posted by PoPo3 View Post
I could be wrong here, but outside 100 yards, I think you are at the mercy of the ammunition. Most of it falls apart when it comes to accuracy after 100. I have a Ruger 10/22 that consistently shoots sub moa at 50 yards, sometimes at 100, and almost never at 200. And by consistently sub moa at 50, Im talking in the .3 grouping.
In late on this thread, but I think the issue there is wind drift and other effects. If you are firing subs, that's a LONG flight time to 200yds on a light bullet.

A 40gr 1050fps subsonic 22lr has a wind deflection of over 2 1/2 inches at 200yds...from a TWO mph crosswind.

The slightest breeze at 200yds is going to toss subsonic bullets all over the place for a 22lr. A 45gr would of course do a fair amount better, but still going to be tossed around.
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Old October 3rd, 2019, 09:35 AM #20
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Being tossed around due to weight of the bullet has nothing to do with it.

It is all based on time of flight.

Heavier bullets tend to have a higher BC, so maintain their velocity, therefore shorter time of flight.
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