I got a book from gun-guides. If you need a load, PM me. I'll see what I can find for you.
7.62x54R isn't often reloaded because of how cheap the spam is... and the truth is that the spam is possibly the highest quality spam out there. That being said, I do like to load my rounds down a bit.
I'm sure it makes a difference somehow, but when I find a recipe, for the most part I just find one with the same weight and material (jacketed or lead). I haven't blown anything up yet. I do seat my rounds out as far as possible, so that should help with over-pressurizing.
Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts and evidence.