Search done, still looking for 45-70 450g load data

[Z06corvette]

Hi guys, I've worn out the search button and still can't find any load data specifically for a 450 grain hard cast in 45-70. Searched Google too. I was in Vernon last weekend and stopped in at Del Selins in hopes of finding some heavy 45-70 lead, in behind some 405's I found a dusty box of Bullet Barn 450g RNFP BB to try. I've got a pound of H4198 that should be suitable, but other powder suggestions would be fine, I can use them for future load development. I'll be firing them from my 1895SBL. Some info about gas checked bullets vs. lead base would be helpful too, I know little about the subject.

Thanks in advance!

 

[458lott]

i load my 450 cast bullets, at 41 gr. reloader 7 with ex. results. it shoots the best in my sbl out of my 45-70s

 

[unstableryan]

i use 33 or 34gr of h4198 with hard cast 480's and it works well.
Quickload says 33gr is 30k psi and ~1400 fps.

Unless you're trying to straighten the rainbow, that's enough power for whatever I will do with the gun.