.375 Bushmaster?

I have a 45 Raptor, and love its performance. I am getting 2400 fps muzzle velocity with the Hornady 240 gr XTP Mag bullets. It's a shoulder fired howitzer!

I am having feeding issues with it though, my rounds are tolerance stacking in the magazine and the bolt cannot catch the next cartridge. So my 20 rd AR 10 functions a a single shot rifle. Does anyone have a solution to fix this?
Ya want a real good bullet for your 45 Raptor?
Get ya some 221gr .452's from Hammer.
I tested them in the 450BM and my 45 Raptor, they feed well
and got to take a Whitetail this season with the Raptor, with excellent bullet performance.........
 
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