There are actually quite a few powder choices for shooting cast bullets in the 7.62x54R.
As mentioned above, Ed Harris’ “The Load” using Red Dot works and is worth trying. This link (
http://castboolits.gunloads.com/showthread.php?t=2751) will take you to a pretty good discussion of “The Load” as well as some alternatives, including the use of 2400. There is also a link there to many more of his articles.
Ed Harris also wrote an article titled “The Moisin Rifle: Ugly but Effective” in the March 1991 edition of the “American Rifleman” magazine in which he discusses reloading for this cartridge. For cast bullets, he suggests several powders, including 2400, H4198 and SR4759.
Another helpful Ed Harris article, “Cast Bullets are Best in Military Surplus Rifles” provides a lot of useful information for many surplus rifle cartridges, including the 7.62x54R. The article is in the 13th edition of the “Handloader’s Digest” from 1994.
I have PDF versions of these articles, but I do not know how to post / share it here or whether it is legitimate for me to do so.
Another option is Hodgdon’s H4895. At the Hodgdon web site (
http://www.hodgdon.com/) if you click on the tab labeled “Data” you will find a selection labeled “Youth Loads.” Clicking on that selection will give you a PDF file that explains Hodgdon’s “60% rule” for H4895. It works well with cast bullets.
From my own experience, I have used the following powders in the 7.62x54R with varying degrees of success: Winchester 231, Accurate Arms XMR 5744, Hodgdon H4895, IMR 4227, IMR 4198, Unique, Red Dot. Depending on the bullet and rifle, I can get pretty good results. I posted some of my (not so satisfactory) results with a couple powders here:
http://www.migunowners.org/forum/showthread.php?t=38443
There really are a lot of options with this cartridges and I hope this helps.
Dan