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Thread: 22 lr upper vs 22lr conversion

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    Deceased August 5th, 2016 goo's Avatar
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    22 lr upper vs 22lr conversion

    with decent 22 lr ammo, what would the difference in group size be at 50 yards betwween a conversion (about $200.00) vs a complete 22 ar15 upper (about $400.00)?
    assume the same size (16") barrel for each.
    same question for 100 yards.
    thank you,
    goo
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    Last edited by goo; 07-13-2009 at 03:41 PM.

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    for accuracy, a dedicated upper is the way to go. The bore size of the conversion barrel is .224 while the 22 lr needs a .223 bore. The other limiting factor is twist rate. The conversion twist can range from 1 in 12 to 1 in 7 while the 22 lr needs a 1 in 16 twist. Though I own the two military conversions, I would go with a dedicated upper if shooting for small group size.

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    I have a Spikes Tactical "M-4" upper and while I haven't put a scope on it yet, with an Aimpoint red dot, the little 2" tall green plastic "army men" stapled to a 2x4 are in serious trouble at 50-yards with Federal bulk pack, when I can find it. I need to scope this thing to see just what it will do, but I really bought it as a training aid to save wear and tear on my AR carbine, and it surely works quite well for that purpose. The Spikes unit is a bit more than $400, though, and if you're looking to practice for NRA/CMPicon competition, it probably isn't the best thing for you.

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    Earlier this summer, we trialed a .22lr version of the Canadianicon Army's Service Conditions Matches 1 through 16. The matches are normally fired at 500 to 100 metres. The .22 version was fired from 100m down to 15m. Targets were exactly scaled for the reduced distances, the course of fire was exactly the same. Well, the rundowns were shorter, but the times were reduced.
    AR type rifles with conversion kits simply were not sufficiently accurate past 50m. I gave up on my AR with Colt unit after trying to zero it at all ranges, and used a stock 10/22 instead. Its accuracy was acceptable. A dedicated .22 upper would be the only way to go. I had hoped to be able to use my Service Conditions target rifle with the conversion unit, for practice and training, as well as .22 competiton. This isn't going to happen.
    Incidentally the centrefire course of fire can be found at Operational Shooting Association Home Page. Later this season the .22 course should be available, hopefully with downloadable, scaled targets.

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    I have over $600 in parts to build my Compass Lake dedicated upper. It uses a modified M261 Army conversion, and a dedcated 1/16 Douglas or Wilson blank, I can't remember. Anyway, it is a real hammer on a reduced for 100 yrds SR target.
    I can hit 1/5 smallbore silhouette rams at 200 with CMPicon aquilla, but you have to turn the front sight down to get the elevation needed for 200 yrd shooting.
    My CLE upper was worth every penny. It is always more fun to shoot a more accurate rifle.

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    Fick, I would be very interested in how you built that upper, especially for the price. Looks like something else I could use......

    Please and thank you.

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