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Rimfire Firearms .22, .17 and other Rimfire Handguns and Rifles

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  #1  
Old 08-07-2009, 10:10 AM
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Default Heavier or lighter 22 ammo for 100 yards.

i figure this is the best place to get some advice.

my goal is to get 1 inch or less groupings from my 22 rifle at 100 yards. i have a 'beginners' 22 rifle with a 3-9x40 scope and will soon have a bipod on it.

i was talking to someone and we came to a disagreement on the ammo. they said that lighter (30-32 grain) high or hyper velocity ammo is better and i said that heavier (36-40 grain) high velocity is better.

any advice as to which one to use for sub 1" groups at 100 yards?

thanks....
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  #2  
Old 08-07-2009, 10:29 AM
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On a 22LR, 1 inch is hard to get unless you upgrade your gun and buy expensive ammo. Light or heavy doesnt matter much, if the ammo is not "match" it wont be as consistent. You can have a 40gr bullet but the powder is off by some 0.3gr's your not going to be getting the consistency to get a 1MOA to a 32gr bullet that is "match". I'd say 2"-3" is good for 100 yard shots for stock gun. Im sure the BC on the 40gr might be a little better but not enough to make it noticable at 100 yards.
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  #3  
Old 08-07-2009, 4:26 PM
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I could be wrong, but isn't most match ammo in the 36 to 40 g range? If so, that's your answer. I suspect the heavier bullet is less affected by wind than a lighter bullet.
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Old 08-07-2009, 5:08 PM
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yes, the heavier grain does help against wind drift, and match ammo are also be sub-sonic.

olympic shooters can use up to a 5.6mm sized ammo (.22lr is maximum size) for the 50m distance (164ft) and for 300m(984.25ft) they can use up to a 8mm ammo. so maybe see what kind ammo the olymipic shooters are using although 50m is about just over 50 yards in distance, which i guess is the maximum accuracy the olympics seen the .22lr can do. and btw they don't use scopes for their shooting.

Last edited by Scratch705; 08-07-2009 at 5:32 PM..
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  #5  
Old 08-07-2009, 6:04 PM
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What kind of rifle are you shooting? It's going to be very hard to shoot one inch groups without a target gun.
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  #6  
Old 08-07-2009, 6:04 PM
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If your goal it to shoot one inch groups with a .22 LR at 100 yards you have to work on mulitiple factors. I shoot smallbore prone competition and we shoot at 100 yards, using expensive Anschutz target rifles, it takes skill to shoot all 10 shots into a one inch group. We only use match ammo and I suggest using Eley or Lapua. Wind is also a significant factor with a .22 at 100 yards. I have my doubts if your beginning .22 can do it, but give it a try. You will enjoy the process.
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  #7  
Old 08-10-2009, 10:11 AM
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thanks everyone, for the input.

after talking to others, i guess 1" groups would be really tough for now. i guess i'll have to work on 50 yards and then move back from there.

i'll post results after the range trips.
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  #8  
Old 08-10-2009, 12:31 PM
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But at 250 yards, if you can hit a 16"* dinger with a 22LR. That is just plain fun!

*I think.
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