I've only been reloading for a couple of years so not a ton of experience since I've only reloaded .45, .357 mag/38 and 9mm in pistol. 30-30 is the only rifle round I reload for and not a lot of them so I've only used two powders, Bullseye for pistol, and IMR 30-31 for the rifle. My question is, does the shape of the bullet have anything to do with the amount of powder used, or is it strictly the weight of the bullet? Wait, just answered my own question. According to my Lyman reloading manual, the shape does have a little to do with it, but mostly the weight is the biggest factor. The reason I ask is that sometimes I can't find the exact bullet in the manual but I can find the same weight and similar shape, but not exact. I usually opt for something midway in the range of powder recommendation. If the manual calls for say 5.5 starting and 7.0 max, I'll usually go for 6-6.5 or something around that. I have never had a problem but always wondered what others do. Currently, I have some extreme .357 RNFP and extreme doesn't offer any recommendations that I can find. They have a manual in .pdf but from what I've read it only offers limited choices and it's currently out of stock. (not sure how a .pdf can be out of stock) Naturally, I want to use Bullseye since that's what I have for pistol powder. Any recommendations?
