I want to buy or build a 300 blackout for Illinois white tails. Does anyone have a pistol idea for the project? I am thinking a Remington 700 CP. As of right now the 700 cp in blackout is non existent. So I could buy a 223 and rebarrel. I could go full custom with a bighorn Origin. I am thinking a 12” barrel will get me the velocity I want. Any ideas on a arm brace? Really any info would be appreciated.