I am shooting 300gr partitions out of 22" marlin 1895 (newer vintage). I have shot some loads with 4198. I get 1.5MOA at 100 yards with 45gr but starts getting bad flyers at 47gr.

I know, so please don't reply if you want to say, what more do you need, or whatever. But I am only kicking little under 2000fps with 45gr. Thinking I want a little more. But hate going out and trying a new powder.

If a guy wants some serious 300gr horsepower, do you guys go to RL7 or 3031 (more slow powders). Also consider the lockup, is 1 to 1.5MOA all I should expect?

i'd go with upwards of 50grs.(max) of RE7, myself. But I'm just going by Alliant's claim that RE7 is "Great in 45-70". Jay

Please get in the habit of designating which 4198, IMR or Hodgdon. They are not interchangable.

Marlin 1895 45-70 22" barrel
Bullet Type, Bullet Weight, Bullet Diameter, C.O.L., Net Water Capacity, Powder Type, Charge, Primer Type, Muzzle Velocity, Muzzle Energy, Group Size
Nosler Partition, 300, .458", 2.540", 63.6, Reloder 7, 52.4, CCI 200, 2315, 3571, 1.2
Nosler Partition, 300, .458", 2.540", 63.6, Reloder 10x, 58.3, CCI 200, 2367, 3733, 0.7
Nosler Partition, 300, .458", 2.540", 63.6, Benchmark, 59.0, CCI 200, 2200, 3225, 1.2
Nosler Partition, 300, .458", 2.540", 63.6, IMR 4198, 53.8, CCI 200, 2324, 3599, 0.5
Nosler Partition, 300, .458", 2.540", 63.6, RS X-Term, 61.6, CCI 250, 2306, 3543, 0.9

Reduce by 10% and work up carefully watching for signs of excessive pressure or velocity.

Well, Jackfish, what I am asking is, has anyone found 3031 or the slower powders working more accurately with a little more velocity in a Marlin. I know the loads but thank you kindly.

Oops didn't see your groups there. Well, I didn't ahve that good luck going past 45gr of IMR4198. I started getting clear flyers. But was using 210 primer. I can't imagine it would make that much a difference but who knows.

I have found the faster powders give better accuracy with the 300 grain bullets in my 1895. The most accurate load I ever fired in my 1895 was with the 300 grain Hornady and 50 grains of IMR4198. You could also try 50-55 grains of H4198.