Just my 2 cents worth, less inflation of course. as with all our toys you need to use what it likes best, that could be the really pricy stuff ( eley 10x, rws R50 ect) or the other end of the line ( cci federal ect) or something in the middle. Generally you might have better luck with standard velocity than HI-velocity. A lot of guys are having good results with the Wolf brand (target and match) which in today's pricing is the lower end of medium cost. Some matches have a price limit on the cost of a box of ammo, so this will influence your choice also. The big three in ammo are Eley, RWS, Lapua. For the last several years Eley has been on top in the BR world. This does not give specific answer, and in reality there isn't one.