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Ammo and Reloading Factory Ammunition, Reloading, Components, Load Data and more. |
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#3
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Yes. Look up the 450bushmaster.net reloading forums for all the reloading mojo. I have had luck with 4227 and 300mp so far. 38 & 39 grain 296 work best but with longer COL usually.
With 300 grainers i really need to port the barrel to rifle length gas system due to dwell time problems,
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#4
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What barrel length are you using? The XM15 has a muzzle brake that has 3 ports 1 on top and 1 on each side the bottom is solid I bought a CMMG lower that I pick up on Friday it currently is mounted on my 93 Colt sporter lower,I don't know how it will function with the CMMG yet but I will find out soon
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