OK, OK, slap me around a bit.
You may as well join in, as I have been in the process for a good long time already.
I once had, yep stupid of me, but I once had a nice little Marlin 44, one with the micro grove barrel, which shot the 310gr LBT bullets just fine!
I used the same load combination as I use in my Red Hawk, 19gr - AA#9, behind the quenched and gas checked LBT.
It did bang me around a bit until I added a recoil pad, which added enough length to the stock to keep my thumb away from my nose on firing.
Had it set up with a peep sight and found it to be great fun.
The only feeding problems I ever had, were due to the long bullet, and then only if I tried to rapidly chamber a new round.
AS long as I took it nice and easy, NO problem. Other wise, the long nose on the 310gr slug wanted to hang up a bit.
Looking for a replacement, so one day ------------------------------------------------!
Keep em coming!