Not trying to be funny, but the "best" ammo is whatever works in your rifle.... and they ain't all the same. I shoot a 96/44.... pretty much the same, and my best performance has been with a 300 grain XTP and 2400 powder, 1/2 grain under max load.
Best recommendation is to take up reloading. Get a single stage press, a set of dies, a powder dispenser, a scale, a dial caliper, and a case trimmer... you're in business. For low-volume loading, a Lee setup will work just fine.
+100 thats what I have .I'm more conserned with quality/consistancy than quanty and every thing I load I weigh the bullet ,[sometimes they may be a few grains off] and each powder charge is the same down to the 100th of a grain .It doesn't make that much diffrence with the .44 mag ,but with my 7.62x51 for my M1A it does .A 10th of a grain here or thers makes a big diffrence at 600 yards so I weigh everything .Bullet ,powder charge, case ,primer and mike the bullets and cases both ways too .That way I know every ones the same I use 168grSerria Match king bullets IMR 4046 powder and CCI large rifle primers and then weigh them after assinbling then too and whan scopes this gun will print 1/2 " 3 groups at 100 yards.with this 4x16x40 mil-dot scope ,if I can see a groundhog ,it's a dead groundhog.
Heres a pic of her