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Posted: 2/17/2008 1:07:37 PM EDT
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I have a home build ar15 with a 18" barrel, free float handguards & a YHM Phantom QD. Optic is a Leupold CQT I am seeing a POI shift of 6-8" at 100 yards on my rifle. This seems a bit excessive for POI shift..... what type of shift are others seeing on their rifles? |
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As mentioned, heavier cans often have more shift. But there are really a lot of variables. Stick a weight on any barrel and all bets are off. As long as the shift is consistent I don't really worry much about it. What is the profile of your barrel? You see the same shift with different ammo? With my Ops Inc 16th Model I see less than an inch and always consistent location. With my AAC M4-2000 and M4-1000 cans I get less than an inch on several different rifles ranging from 11.5" barrels out to 18" barrels. Mark |
Well, atleast it's not just me then..... I wonder if YHM would be willing to rebuild this older phantom into one of the newer/lighter units. My 10.5 doesn't change POI when I have it on it... then again, I don't take my 10.5 to 100 very often... typically only 50-75 where it's less noticeable. For the record, my 18.5 is a HBAR |
its still a muzzle mounted brick even in its lighter brother skin, it will affect impact quite abit. |
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