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new barrel oal issues


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I have been running Montana gold 124jhp,4.7 WST with an oal 1.13 for a couple years now out of a M&P pro. This averages 1075fps. I installed a new apex barrel and it wants a max OAL of 1.085-1.090. Since I have about 7 lbs of WST left I need to figure out how to make this work if possible. Should I just drop powder down and work my way up or is that length going to be unrealistic?

Current rounds will force load,but ejecting is a major issue with obvious marks on the bullet.

Edited by scrappy35
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I've been running 4.6 wsf with 124 MT in a Sig 226 and several M&P's at 1.065 OAL

But I think you've already got the idea of shorten up, drop the load and work back up to desired PF

Edited by jcc7x7
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