Using .22lr conversion kits .

[1911pro]

I am thinking about getting a 22lr conversion kit for my LMT 10.5 SBR with a T-1 on it. I did not want to adjust the T-1 when going between 5.56( which it has been sighted in at 50yards with) and .22lr. I know the .22lr setup only gives about 5inch groups anyway. Can you just switch between the two with no sight adjustments and be in the ballpark with the .22lr kit?

[MisterWilson]

Mine was. No adjustment necessary.


My primary concern was leading up the barrel & clogging up the gas port/tube. Ultimately I decided that it wasn't worth it to me to chance screwing up my nice LMT upper.

If I was going to give it another go, I'd simply go with a deticated .22 upper/rifle.

[1911pro]

Mine was. No adjustment necessary.


My primary concern was leading up the barrel & clogging up the gas port/tube. Ultimately I decided that it wasn't worth it to me to chance screwing up my nice LMT upper.

If I was going to give it another go, I'd simply go with a deticated .22 upper/rifle.

Thanks. I was kind of worried about the same thing. What if you use a better quality .22lr that has a plated bullet?

[MisterWilson]

Are there "plated" .22 bullets? The only ones I've seen are "copper washed" and very very thinly plated.
(read: Not at all)

[1911pro]

I have a 333 round box of winchester 36gr that say"Plated Hollow Point 1280fps." They look like they have a thin copper plating on them.

[Keesh]

I never adjust when I swap between .22/.223 on my 10.5" LMT. Probably shot 1000 rounds of .22LR and a couple hundred of .223. If it can handle .223 don't think .22LR is going to mess it up. New gas tubes are cheap and easy to clean also, even if somehow you managed to completely clog it up. Seems like one would have to run a lot of .22LR without cleaning for that to happen.

[Sam]

I use a Ciener .22 conversion for practice on many occasions. I always end the session by reinstalling the .223 BCG and shoot about 5 rounds through it to clean out the barrel and gas system. It's interesting that the first .223 shot after the .22LR rounds blows out a lot of smoke. After that, there's no more stuff coming out of the barrel.

I use the upper with an Aimpoint ML2 red dot that is zeroed for .223. I do not alter the sights or the dot in anyway when I shoot .22LR. The .22 LR being smaller in caliber than the .223 is only accurate to a certain distance. Out of my 16" barrel, I usually get good group to about 30 yards. Accuracy starts to suffer from there on out. At 35 - 40 yds. the groups look like shotgun patterns. Knowing this, I don't practice with the .22LR kit farther than 30 yds. Most of my practice is 25yds and less.

I haven't tried the .22LR kit in my SBR yet (10.5" barrel). I imagine the accuracy won't be as good as shooting out of the 16" gun.

[hossb7]

Mine was. No adjustment necessary.


My primary concern was leading up the barrel & clogging up the gas port/tube. Ultimately I decided that it wasn't worth it to me to chance screwing up my nice LMT upper.

If I was going to give it another go, I'd simply go with a deticated .22 upper/rifle.

just put a mag of .223/5.56 through your rifle after shooting .22 and it'll blow out your gas tube.

[austinN4]

Can you just switch between the two with no sight adjustments and be in the ballpark with the .22lr kit?

Back to the OP's question: I do not adjust my H-1 when using the kit, but rather I hold over the target some. It differs with the range, but the amount of holdover required is easily deteminded within a few shots.

[1911pro]

Thanks for the info. I am going to try and pick up a kit within the next couple of weeks.