Just out of sheer curiosity, what psi can an off-the-rack Rem 870 pump gun take? diff btw regular and 'Express'? Wondering abt the potential of a 870 in one of these 12ga Big Shot chamberings? Or even just regular plastic cases but loaded w slower powders?
870's cycle so reliably even w longer shells that there is potential there. Although the factory barrels are pretty thin and there isnt alot of room to modify ejection ports.
Anyway, just asking...
C-