Gah! Not another 45-70 question!

[Oddbawl]

I've been casting Lee 405gr globs for my Pedersoli RB. Putting it in front of 25.5 gr of Sr4759 with great results.
I just scored a Lee 500gr mold and would like to roll some using the same powder if I could. I can't find specific numbers for that particular powder/slug combo at all. Was hoping to keep in the 1300ish fps range.
Anybody doing it?

 

[ckid]

I have tried pushing the same bullet with SR4759 with charges between 22 and 28 grains, and I could not get the accuracy I was getting using the 25.5 gr load behind the 405. That was out of my Uberti Highwall, maybe your RB will behave differently. Good luck and let me know how you fair out.

I didn't bother chrono'ing any of those loads as the accuracy I was getting didn't warrant persuing the combination any further.