I have an original conversion gun rebarreled to 50 2.5" with a 1 in 36 twist so it's for 450 to 550 gr bullets and it shoots them ok. I shoot my Shiloh/ C.Sharps 50-3 .25" a lot more than the old gun it weighs 10 lbs 3 oz. It will kill on both ends if one isn't careful with it.
The mere mention of a 50-140 Sharps has me seeing a gallon jug of liquid Advil in the back of my mind!
;]
And, I was about to tell everyone what a HOSS you are.
Now, this...
DF
LOL, a big double rifle in 500 or 577 nitro for 6-8 rounds standing from sticks is one thing, 60-80 plus rounds of 50-140 from a bench shooting a match would be quite another i'll bet.