best powder for 45/70..

[remington jim]

45-70 powder

I just got my first 45-70 and haven't loaded any cartridges yet. I've "experimented" with different powders on Quickload program, and IMR4227 looks very good with 350 gr bullets. That will be the first powder i try.

IMR4227 is WAY to fast for the 45-70 !!!!!!!!!!!!!!!!! do not do use it !!!!!!!!!!!

 

[saskgunowner101]

I haven't tried 4227, but there's load data for it in Lyman cast bullet handbook (3rd edition). Doesn't seem to be a good top end powder but looks fine to me for topping out with mid range velocities.

 

[Andy]

Any cartridge can be safely loaded with powders as fast as Bullseye. Interestingly, it's the slower powders that in many cases can't be used. The 45-70 has been loaded with practically every powder from Bullseye to US869 - of course action strength and desired MV severely restrict choices.

 

[diesel_weasel666]

IMR 4064, I use it in .45-70 and all of my milsurp calibres. However, I found it burns quite dirty in .45-70 if you are using it for light target loads.

 

[Brutus]

IMR 4064, I use it in .45-70 and all of my milsurp calibres. However, I found it burns quite dirty in .45-70 if you are using it for light target loads.

I've used IMR 4064 before in this case, but only with Hornday 500 grain FMJs.
(1700 fps'ish)

 

[Eagleye]

IMR 4198, Reloder 7, H322, IMR 3031. Those are all fine for your purposes.
I have never used 4227, but I'm sure it would work with low to mid range velocity loads.
Regards, Eagleye.

 

[ckid]

My 2 go to powders for the 45-70 are RL-7 for maximum loads (Ruger #3 with jacketed bullets) and SR4759 for black powder velocities with cast bullets (Uberti Highwall). I have heard great things about Accurate 5744 when used with cast bullets and I have a can, but have not had a chance to try it out.