45-60 in 45-70

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  • Last Post 24 August 2021
Qc Pistolero posted this 22 August 2021

Anyone has tried shooting 45-60 ammo in a 45-70 gun?Or a 45-70 in a 45-90?I know that the long bullet jump is not theorically conductive to accurate shooting but  most of my 357s being fed .38Spl seem to ignore that theory.Same for my 44sMag  shooting Russian in them.

Is it the same  or I'm overlooking something here that might make it a dangerous practice?Just curious!

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RicinYakima posted this 22 August 2021

CotW says that the 45/60 is .008" bigger are the base and .025" bigger at the rim. For 50 years, until Cowboy Shooting came around, everybody shot 45/70 in 45/90 cause there wasn't any ammo. 

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RicinYakima posted this 24 August 2021

You did well! The 45/90 I had to work with had a 1/38 twist. Barely seat a 300 grain bullet out to feed from the '86 with 45/70 brass. 

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JeffinNZ posted this 22 August 2021

It won’t be dangerous but certainly won’t help accuracy.

Cheers from New Zealand

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Bud Hyett posted this 24 August 2021

I have a Uberti1876 Winchester in .45-60. I've made several hundred .45-60 out of Federal .45-70 since I had these and this was a good usage. The loads are from the latest Lyman Reloading Manual to duplicate black powder loading with a 300 grain bullet. This is one rifle I always wanted and finally bought the Uberti to get a shooter.

Many decades ago, I bought an original .45-90 1895 Marlin built in 1914. a square bolt. I got thirty well-used .45-90 cases. When asking about more cases, the gunsmith said to use .45-70 with the bullet set out. I did this since I wanted to shoot the the rifle. The Marlin had a 1:18 twist which stabilized the heavier 500 grain bullets and this worked well. Then Starline made the .45-90 brass and I bought them.   

Farm boy from Illinois, living in the magical Pacific Northwest

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