350gr 45-70

[canon6]

anybody have any experience with a 350 gr fpbb in 45-70 I amlooking for a load using 3031 ,at around 1500 thanks Doug

[versifier]

I'd start at 37gr 3031 and work up to 40gr. I'd also ask next door on CB - many more there with much more experience with the cartridge and cast than I have. What are you shooting it out of? This load range is for a Trapdoor. Stronger actions could likely handle stiffer loads, but the question is: what does your rifle like best? 4198 is another good powder to try.

[canon6]

versifier,I am shooting it out of a modified NEF Handirifle.I have a very bad right shoulder and have added 3# 's of lead to the but .It weights in at 11.13pounds.I do not intend to use it as a walk around rifle thanks for the info

[versifier]

In that case, we can use the Richard Lee formula for reducing loads.
In my Sierra manual, the load range for 3031 in .45-70 is 38.4 - 49.2. Take the difference and subtract it from the base figure. 49.2-38.4=10.8; 38.4-10.8=27.6.
so, 27.6gr of 3031 should be a safe starting load. In your situation, accuracy is more important than velocity, no? I would be looking for the lightest load that groups acceptably in your rifle. I assume that along with the extra weight you have also added a thick recoil pad. I can relate to the problem. A spine injury forced me to put recoil pads on all my hunting rifles, and I use a slip-on boot for milsurps and other peoples' rifles that I test or load for. I've had more than a few strange looks when shooting a .54cal traditional muzzle loader with a pad on it. They laugh until it prints MOA groups @ 100yds. Then they slink back to their vehicles with their modern rifles that barely pie plate. The more comfortable you are, the better you can shoot.

[canon6]

versifier,I have put on a Limbsaver recoill pad,I went out today and with a starting load of 40 grs 3031 I could stand the recoil ,so now I will keep adjusting load untill I get one that is accurate,I am going to try the reduced load tomorrow thanks Doug