What is everyone's advice on AR15 450 Bushmaster Magazines? What has worked for you? I have heard a few things. For example that you need dedicated 450 Bushmaster magazines or to modify existing magazines. The big mod that I'm aware of is notching out the front of the mag to the cartridge will...

@rigrat This deal might be for you. DTT Customs “Mountain Hound” AR-15 Featuring Aero Precision Upper Receiver 16” .450 Bushmaster 1-24T 4150 CMV Heavy Barrel 15” KeyMod Handguard (Assembled or Unassembled)

Already pretty much think I know the direction I'm going in. But which would you go with, would you get the 277 wolverine or would you build a 450 bushmaster? Both would take deer out to 200 yards but the 277 would stretch on out to 300. The Wolverine would use the same rcvr, bcg, mags and brass...