Shooting BP out of a 45-70 Marlin 1895 GG?

it does alright, but its more work with loading and cleaning. most of my black powder hunting was for the love of using the same componets as out forefathers in my old rifles.

Agree with "east bank", more disassembly of parts to remove black powder residue is required when using black powder or black powder substitute. Residue remaining in the mechanism will corrode the parts.

Anneal (stomp stomp) the case mouth so it seals.
Clean using soapy water w/ an empty case in the breech/chamber so it stays out of the action.
Damp patch through chamber to clean any slight residual there.
Dry patch an oil w. BreakFree or the like...

...and it's no different/no need to disassemble beyond that.




ps: deprime and clean the cases inside/out using 410 shotgun swab/soapy water (stomp stomp again )

When I shoot 45-70 black powder loads I immediately drop the fired cases into a bottle of water that I have standing by. I've never been able to keep BP cases bright and shiney. If anyone has an easy way to keep them shiny kindly let me know. All my cases are functional but ugly.

When I shot BP in all brass shotgun shells I used a case tumbler - like for pistol. They came out pretty clean and shiny.

Cases exposed to BP solution/residue will go dark.
No big deal -- cosmetic only -- and dry tumble shines up again.

See: https://thefiringline.com/forums/showpost.php?p=5201812&postcount=18

I too always dropped the fired BP cartridges in a jar of water, with just a couple of drops of dish detergent and then shook it up a bit, once back home, I let them dry out, and then put 'em in my tumbler. They came out clean as a whistle.

Shot plenty of black powder out of my Marlin 45-70.
True Black requires special BP lube for your bullets. Sub like APP that I also use can use standard lube bullets and cleanup is a bit easier and less worry about corrosion.

Check out
https://www.thehighroad.org/index.php?threads/goex-black-powder-cartrige-405gr-45-70.634030/

Blackpowder in a Marlin is no big deal. I don't have a 45-70, but have used two Marlin 1894s in 357 with blackpowder for almost 20 years. Easy and quick to clean the way the lever and bolt comes out with just the lever screw removal. I have a Marlin 1895 in 45-70 on my wish list. Will get one soon and it will never see anything other than blackpowder loaded in the cases.
As far as cleaning cases, nothing beats a rotary tumbler with either ceramic media or steel pins. The cases come out looking brand new with the primer pockets clean to boot. I usually let the cases soak in water overnight before they go in the tumbler. I prefer the ceramic media as those tiny steel pins are more involved when separating the cases during the rinse, at least for me.