Good luck! You can get Norma brass for $75 per 50 (Cabelas) and Lapua brass at $92 per 100 at (E. Arthur Brown). Graf & Sons sells Prvi Partisan brass, but out of stock right now. I lucked out 2 years ago and got some Winchester primed brass (made by S&B) and Lapua 7.62x53R, both on sale at E. Arthur Brown. I have found limited reloading data available, limited powders that work well (Varget, IMR 4350, or hyper expensive VV powders), and only Hornady 174 FMJBT and Sierra 174 MK bullets.

Folks across the pond and in commonwealth countries talk about getting S&B 180gr bullets, but I have not found any in USAicon. Many folks in USA pull bullets from surplus and redo the ammo, often just recharging same cases and topping off with same tips, only with more precise powder measurements.

Frankly, my Fin M39 likes the Bulgarian Heavy 182 gr yellow tip ball that I feed it. I am going to try some Russianicon light ball from plant # 188, or some Hungarianicon silver tip next. To me right now its not really worth reloading this caliber except for limited occasions, if you know a special very accurate load for your rifle, or if you cannot get the surplus ammo.