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45-90 smokeless powder alternatives
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Zebulon
Texas
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February 27, 2026 - 3:02 pm
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The most commonly recommended smokeless  powder I see is 5744, a can of which TxGunNut has generously gifted me and which I propose to use first. 

I had thought to backstop this against future need but there are no suppliers with inventory except a couple whose Websites glow red in the dark because they claim to have 8 pound kegs of 5744 in stock but want Bitcoin or Zelle in payment…..

I have good supplies of 3031, 4756 and 4759, and 4064 on hand, as well as Bullseye, Unique, and some 231. 

Bearing in mind I intend to shoot 300 grain cast lead at 1300 to 1400 fs,  does anyone have a favorite recipe using any of those powders? 

Also. I’m aware Winchester designed the 45-90 WCF case to fit within the longest OAL the 1886 will accommodate.  I don’t have a Lyman handbook yet and wonder if someone could please give me comfortable max OAL and trim length numbers for the cartridge?.

Thanks.,

Bill

- Bill 

 

WACA # 65205; life member, NRA; member, TGCA; member, TSRA; amateur preservationist

"I have seen wicked men and fools, a great many of both, and I believe they both get paid in the end, but the fools first." -- David Balfour, narrator and protagonist of the novel, Kidnapped, by Robert Louis Stevenson.

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win4575
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February 27, 2026 - 3:09 pm
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4759 is a great powder for large caliber black powder cartridges.   If I shoot smokeless, it’s either 5744 or 4759.

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TXGunNut
Northern edge of the D/FW Metromess
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February 27, 2026 - 3:16 pm
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Zeb-

Case length is 2.4, COAL is dependent on the bullet selected, 2.8 for shorter bullets suitable for a repeater to 3.3 for the heavies. In addition to 5744 I’m thinking 4198 would be a good choice.  Source Lyman 50th.

 

Mike

Life Member TSRA, Endowment Member NRA
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Smokeless powder is a passing fad! -Steve Garbe
I hate rude behavior in a man. I won't tolerate it. -Woodrow F. Call, Lonesome Dove
Some of my favorite recipes start out with a handful of depleted counterbalance devices.-TXGunNut
Presbyopia be damned, I'm going to shoot this thing! -TXGunNut
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Zebulon
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February 27, 2026 - 5:56 pm
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Thanks Mike.  I haven’t run all the traps yet but 4198 seems to be unobtainable at present. At a guess, all that IS available is likely to be overruns of powders for military application.- if.that. 

- Bill 

 

WACA # 65205; life member, NRA; member, TGCA; member, TSRA; amateur preservationist

"I have seen wicked men and fools, a great many of both, and I believe they both get paid in the end, but the fools first." -- David Balfour, narrator and protagonist of the novel, Kidnapped, by Robert Louis Stevenson.

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