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Ammo and Reloading Factory Ammunition, Reloading, Components, Load Data and more.

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Old 02-24-2014, 6:52 PM
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RR.44 RR.44 is offline
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Default 450 Bushmaster 300gn xtp mag load

Have any of you loaded 300gn Hornady XTP Mag for your 450 Bushmaster? And if so how did they perform i.e. feed, group etc.?
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Old 02-24-2014, 6:56 PM
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Sorry about that brain fart on my end I'm using a 38.2 gr charge of W296 out of an XM15 with a 16" barrel
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Old 02-24-2014, 8:10 PM
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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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Old 02-24-2014, 8:28 PM
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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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