.45-70 and 300 grain cast bullets

[David LaPell]

I have been trying to locate some sources for loading 300 grain cast bullets for my .45-70 using Reloader 7 powder. Any sources?

 

[john traveler]

The Lyman Cast Bullet Handbook 3rd Edition shows some "RX7" loads starting at 47.0 grains and going up to max of 51.0 grains for a 322 grain cast bullet. According to paragraph on Reloader 7 it's Hercules' fastest rifle powder. Load data on page 232 on M1873 Springfield level loads.

 

[dkizer22]

Real Guns handload Data list loads for Marlin and Ruger No. 1 with Re 7

 

[OU812]

What kind of gun are you loading for. If its an older trap door and you use the Ruger 1 or Marlin data you will have big problems. The Rx7 loads I use in my Marlin guide gun would be dangerous in any older 45/70.

 

[VAdoublegunner]

Lyman 48th shows 50.0-55.0 grains in the 1873 Trapdoor section for a 292gr cast. I have used 47.0gr with a 300gr cast in a 12" Hunter T/C Contender; chrono'd it at 1548fps.