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45-90 smokeless load data

Dave45-70
I can't find any load data for the 45-90 cartridge, Barrel on my Winchester 1885 says "black powder only" I use smokeless in my 45-70 and there are 100's of 45-70 bullet and powder combinations listed.I'm not a purist when it comes to single shots and I'd much rather use modern powder. thanks
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Comments

10 comments

Date Votes
  • perry shooter
    Check on the WEB for TRAIL BOSS powder load data. This powder was made for low pressure in Black Powder type Cartridges.
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  • gesshots
    Try:
    http://www.petloads.com

    Sample:

    300 Sierra JHP Accurate AAC-5744, 1,375fps
    320 RCBS 45-300FN Accurate AAC-5744, 1,491fps
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  • MIKE WISKEY
    "Barrel on my Winchester 1885 says "black powder only""..........I'LL ASSUME THIS IS A CURRENT EDITION M-1885 MADE IN JAPAN, AS SUTCH IT WILL TAKE ANY STANDARD LOAD FOR THE .45/70 (AND PROBABLY A LOT MORE, BUT YOU ARE ON YOUR OWN THERE).
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  • kms1961
    i have quite a few on hand from back issues of handloader magazines. some good ones from ken waters. if you would like i can scan them and email them. or print them out and send them. took along time as well to dig some up from reputable sources. let me know. Kevin
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  • Bert H.
    quote:Originally posted by DBuesching
    I can't find any load data for the 45-90 cartridge, Barrel on my Winchester 1885 says "black powder only" I use smokeless in my 45-70 and there are 100's of 45-70 bullet and powder combinations listed.I'm not a purist when it comes to single shots and I'd much rather use modern powder. thanks


    What weight bullet are going to use in your 45-90?

    I personally like IMR 4198, as it produces nearly identical presssure and velocities as black powder when loaded properly.
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  • Dave45-70
    Bert, You asked what bullets i plan to shoot in my 45-90? I really like heavy bullets like 450 or 500gr (in my 45-70) but as you said the 45-90 rifling is designed for 300 gr. cast bullets. What charge do you like with 4198? Also do you use a filler or wad? thanks Dave
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  • tsr1965
    quote:Originally posted by DBuesching
    Bert, You asked what bullets i plan to shoot in my 45-90? I really like heavy bullets like 450 or 500gr (in my 45-70) but as you said the 45-90 rifling is designed for 300 gr. cast bullets. What charge do you like with 4198? Also do you use a filler or wad? thanks Dave


    You never said if your 1885 was an original or a newer copy. I have a 1885 BPCR rifle in 45-70, and an 1886 takedown(1999 vintage), also in 45-70. I use a 405 grain cast bullet, and 34 grains of IMR 4198, with NO FILLER.

    Best
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  • Bert H.
    quote:Originally posted by DBuesching
    Bert, You asked what bullets i plan to shoot in my 45-90? I really like heavy bullets like 450 or 500gr (in my 45-70) but as you said the 45-90 rifling is designed for 300 gr. cast bullets. What charge do you like with 4198? Also do you use a filler or wad? thanks Dave


    Dave,

    If you shoot the 300-grain bullet, start with 38-grains of IMR 4198 and work up (or down) slowly until you find the sweet spot. With a 405-grain bullet start with 32-grains. IMR 4198 does not require any filler, as you have the case approximately 50% full.
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  • Dave45-70
    Thanks to all who responded, you were a big help and special thanks to Bert. Dave
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  • kms1961
    plus 1 to ber as mine shoots 4198 very well as well. Dave i will scan them and send this week. Kevin
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