I've put over 50 rounds of RST 1 oz "Maxi-Lites" through a pair of 6 1/4# Brit guns at the UP SxS Classic, in 2 1/2 minutes. That would make me feel beat up, if I were going to get that feeling. Did not. My usual target load was my own 7/8 oz reloads at low pressure and moderate velocity (around 1150 fps). Those were fine too. Hunted pheasants with those guns. Game Bore Pure Gold 1 1/16 oz in the R barrel, my own 1 1/8 oz reloads in the L. Of course we're talking a 3 bird limit in "American rough shooting", so I was not burning up all that many shells. But those were fine too. Target shooting is definitely more comfortable with my 7 3/4# Parker and the same loads I shot through the Brit guns, but then the extra 1 1/2# of weight, plus a recoil pad, make a lot of difference. The latter is pretty much like no kick at all; the former, kick but very tolerable.