Get some decent factory brass.
Save your fired-off Sellier & Bellot brass, your Prvi Partizan Uzice brass, your 'Bell' brass, your Igman Kragujevac brass, your Boxer-primed Wolf brass, your Lapua and Sako and Norma brass.
Get into handloading: twice the fun for half the bucks. And the BONUS is ammo that makes everyone else wonder where you got that SPLENDIDLY-accurate Noisy Maggot.
Did you know that a Moisin-Nagant can go for three years, shooting three-shot groups onto the same 325-yard target.... and with EVERY SINGLE ROUND in the same 3-1/2-inch high by 5-1/2-inch wide group? That's shooting in everything from almost 100 above (F) to 35 below. The rifle can do it.... but ONLY if you load your own. I have seen it done.
Have fun!