Thread: Ordered a 45ACP/12ga rifled insert

putting it muzzle forward would be asking even harder for baffle strike
unless you cut it down and done a muzzle forward on like a 4 inch barrel

a series of washers that are 12 ga on the outside (18mm) and 45 cal (12mm 11mm+ 1mm clearance) on the inside that are pressed in with 18mm pipe cut into one inch pieces for spacers would be the simplest

just gotta make sure that it all lines up