Maybe Drew will make a sticky of what is considered high pressure for each gauge of vintage shotgun?
Hot loads beat old guns to pieces.
1300 fps is not a Vintage friendly load.
I break clays at 50 yards with 1050 fps low pressure shotgun shells throwing 7/8oz. Sometimes I even use 3/4.
I believe the tighter chokes keep the pattern very dense,waaay out there.
In the lightweight frame, fluid steel, Flues 12's, I shoot the B&P Comp1 7/8oz load.
I've never shot the 16 ga offering from B&P, but I do know they will tell you the pressure over the phone if called.
Because of the mechanics of a Flues action, I don't recommend heavy loads through them. You'll have damage in hard to fix places, or various gremlins that are annoying as hell to remedy.
