Cartridge
Bullet
Powder
Charge
Velocity
Notes
.375 Atomic
Sierra 200 gr
W296
22.5
1,555
Fast but less accurate
.375 Atomic
Hornady 220 gr
H110
21.0
1,505
Capable of 1" at 50
.375 Atomic
Hornady 220 gr
IMR 4227
21.5
1,483
Maximum
.375 Atomic
Hornady 220 gr
AA1680
22.5
1,425
Accurate but slower
.375 Atomic
Martin 228 gr LFN
H110
21.5
1,519
Most accurate load
.375 Atomic
Martin 228 gr LFN
IMR 4227
22.0
1,497
2.0" at 50 yards
.375 Atomic
Martin 228 gr LFN
AA #9
20.0
1,440
Fair accuracy and max