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subsonic 220 corbon was a no go in mine also
Well, I'm glad QB told me to check the forums here. I went to the range today and fired 4 rounds of 220gr Corbon Subsonic. I quit at for because I figured why waste ammo until I got it fixed. My Model 1 I purchased last year some time around summer. I purchased barrel only and put it together my self with upper and adjustable gas tube.
I've now fired 20 rounds of 150gr Corbon without flaw except for the 1st 2 rounds. I use a M16 bolt carrier which is heavier than the AR15. Standard stock and buffer setup. I was concerned originally thinking I may not have lined up my gas port with the block. I'm using a rail fron gas block with locking screws and I wasn't sure that I was getting it exactly over the hole. I have not gaged my port, however after reading this thread I'm thinking I will. I took 5 rounds of 220gr Subsonic to the range and fired them for effect. 1st one almost pulled the bolt back half way. Most didn't pull it enough to remove the case from the chamber. It was about 20 degrees out side and I forgot my allen wrench to adjust the gas system so I didn't stay around the range and tinker with it. I was pretty much convenced by the posts here it would be useless anyway. I'm going to go back and check the hole size and make sure the gas block is aligned properly. Jripper looks like he has had more trouble than most getting his M1 300/221 to work.
Just thought I'd drop a line here and welcome myself to the club.
:shock:
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