....Several members here shoot low pressure rifle and pistol calibers on shotgun frames, those calibers were available on the old H&R frames that were of only one strength, both for rifles and shotgun, the newer SB1 shotgun frames are at least as strong as those older frames.
Tim
While I don't advertise this or recomend it, I admit I also have tried a couple calibers on SB-1 frames. With all respect and with in limits, I have tried my (now mitchells) 44Mag, and 223 on a good new SB-1.
I did notice that when shooting the 223 off of an SB-1 that pressure signs came quick, a lot quicker then when fired of my SB2's... word to the wise here,
IF you do it, .. load
LIGHT. I believe the thicker firing pin and the thicker hole to be the culprit here.
Aways be mindful of the pressures a cartridge can make, no matter how "small" or how much a kick one has. Point in case: A 12ga will kick more than a 223, but doesn't mean it creates as much pressure.
http://www.leverguns.com/articles/saami_pressures.htmThere's not many calibers I would try this, and I was very reluctant to do it with a 223.
A 22Hornet, 30-30, 357Mag, 44mag, are the only ones I would be daring enough to try.
Still, why not just put it on an SB-2 and be done with it and save the risk. Kind like the old sign at the local swimming hole, Enter At Own Risk.
-Aaron