RE: 300 Remington Ultra Magnum - Too Much??
Pet Loads. Now keep in mind as always to start low when working up.
93gr H1000 180gr Nosler Partitions, CCI250 Primer, 3.625" COL
94gr Retumbo, 190gr Sierra Matchkings, 215M Primer, 3.650" COL
88gr RL25, 180gr Barnes Triple X, 215M Primer, 3.6" COL
92gr Retumbo, 200gr Sierra Matchkings, 215M Primer, 3.650" COL
89gr RL25, 200gr Nosler Accubond, CCI250 Primer, 3.7" COL
RL25 will give you highest Velocity from 180gr bullets up, but Retumbo seems to have better accuracy.