Ty, you're my favorite sick puppy

I can't imagine shooting 720 gr. out of a 120.

I just finished putting a synthetic stock set on my .45-70 and put 36 oz. of #4 shot in the stock to reduce recoil. You'll probably need a whole 25 lb. bag on that baby. Good Luck!! You're a very brave young man, and your adventures are read and appreciated.
Pete