Jay I already have a 1 pound bottle of IMR 4227, that I purchased after consulting my Hornady manual. I realize, you can buy ammo in steel cased cartridges for 7.62 x 39 dirt cheap and those are great for SKS' and Ak's, But I am reloading for an InterArms MarkX mini-mauser and a gunsmith told me not to use steel-cased ammo if I could get brass cased, he told me the steel ammo will break the extractor on my bolt and I imagine it would be impossible to find a replacement.