.22LR Ammunition
Spoiler:
- Zero your .22LR caliber AR15 style rifle, or AR15 with .22LR conversion kit at 25 yards.
- From approximately 13 yards out to approximately 89 yards the bullet’s impact will be within +/- 1″ of where you are aiming.
- At 100 yards you can expect the bullet to impact between 2″ and 2.5″ below your point-of-aim.
- If you don’t have the patience for a detailed explanation, then you will still be well served by the information above. If you want to know more, keep reading.
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Why a .22LR Conversion Kit On An AR15 Rifle:
Using either a dedicated .22LR upper receiver or a .22LR conversion kit is a great way to teach a new AR shooter the fundamentals of shooting the rifle without the intimidating loud noise of the full size battle ammunition, and for the experienced shooter to maintain proficiency at a fraction of the cost of shooting full size .223/5.56 ammunition.
To shoot .22LR ammunition out of an AR platform, you basically have two options. You can buy a dedicated upper receiver/barrel set, or buy a .22LR conversion kit that simply replaces your bolt carrier and fires the .22LR bullets through your AR barrel. The dedicated upper’s barrel will usually be a 1 in 12″ twist (as opposed to your AR’s 1 in 7″ or 1 in 9″ twist). The 1 in 12″ twist will result in a better stabilized .22LR bullet in flight which may result in slightly better accuracy. .22LR rounds fired from a conversion kit and through your AR’s barrel may or may not be as accurate as those fired out of a dedicated upper, but I have been very satisfied with the results using the simple and less expensive conversion kit. I can easily hit coke cans at 50 yards, and a full size paper plate at 100 yards. This is good enough for training purposes.
I live and swear by my CMMG brand .22LR conversion kit. When properly maintained, it is both reliable and accurate. They are around $160 and usually come with a 25 round magazine.
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Gemtech, famous for making quality suppressors, also sells their own line of subsonic .22LR ammunition through their online store.
SPOILER ALERT: IT ROCKS!
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Spoiler:
Traditional Factory “Iron Sights” ~.6″ Sight Height Above Bore:
- If the farthest distance that you will be shooting is 50 yards then you will be be served with a 12 yard or 15 yard zero.
- If you will be shooting you rifle past 50 yards and out to 100 yards then you will be best served with a 10 yard zero.
Optic Mounted With Aiming Point ~1.5″ Sight Height Above Bore:
- While the 25 yard zero is very attractive, I would still recommend a 20-yard zero. While there is a very slight penalty of higher apogee of flight with the 20-yard zero, you get almost one inch less drop at 100 yards.
Dedicated Or Converted .22LR AR-15 Style Rifle, 2.5″ Sight Height Above Bore:
- Zero your .22LR caliber AR15 style rifle, or AR15 with .22LR conversion kit at 25 yards.
- From approximately 13 yards out to approximately 89 yards the bullet’s impact will be within +/- 1″ of where you are aiming.
- At 100 yards you can expect the bullet to impact between 2″ and 2.5″ below your point-of-aim.
If you don’t have the patience for a detailed explanation, then you will still be well served by the information above. If you want to know more, keep reading.
