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I have been shooting .40/65 Starline brass in my Browning 1885 .40/65 Rifle. A knowledgeable friend told me that that was the wrong thing to do, that I should be shooting Starline .45/70 necked down to .40/65 then trimmed. He said I was probably building up a Carbon ring in the front of my chamber. Lo and behold he was right and I did have a substantial Carbon ring. What is the sites "brains" opinion on how to get or make the best brass for my Browning .40/65
I used Rem .45-70 brass for My original 1885. It seems the softest of anything I tried. Imperial Sizing Wax worked well, a gentle hand on the press handle usually prevented creases in the brass. But that was 25yrs ago. Brass may have changes, starline may not be hard as tool steel anymore.
I have shot my Browning .40-65 since the late 90's and I have never seen a carbon ring shooting black powder checking the bore foe lead deposits using my Hawkeye bore scope. Maybe it's a smokeless thing I don't know. Some of my Starline cases are short but no signs of carbon in the throat or chamber wall ahead of the case mouth.
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Originally Posted by Lead pot
i have a 45/75 Uberti - when I made up my brass (from .348 winchester cases) I cut a bunch of them short so I could use the crimp groove on a LEE boolit with smokeless - yeah dumb idea and I have learnt a bit following along here since - anyways the smokeless idea never eventuated. I got good results with blackpowder - have had no sign of any kind of crud buildup in that rifle - those cases would be about 1/8" short.
If you feel like the cases are to short you could get a case stretcher from BACO. They make one that goes into your sizer die and you just run the case up and down in the press a few times and it attaches the case.
https://www.buffaloarms.com/40-calib...stre-cs40.html
Starline brass needs to be annealed before resizing but it works fine otherwise.
I have no idea how the brass you select contributes to carbon build-up. I have fired many thousands of rounds with short brass & BP and never saw any carbon build-up. I shoot 40-50BN, 40-65 Win, 40-70SS, 40-82 Win, and 45-70.
Maybe consider shooting BP.
Keep on hav'n fun!
MikeT
A Browning Mikoro .40/65 barrel is chambered .025 longer than standard .40/65's. A Starline .40/65 is 2.100 " and the chamber is 2.,125. Reforming.45/70 brass to .40/65 stretches the case by about .065" and it can be trimmed to 1.125.
Not sure about the carbon ring build up. But I have heard with bp loads and to short cases cusing lead rings and paper rings ( with PP bullets) the bullet expands into the open space then shears off.
Jed if you decide to size down 45-70 be sure to switch arms every so often or youll end up "lopsided"
Have several hundred sized from 45-70 I shoot in my Browning BPCR and several High Walls in the same caliber, never had a problem.
My right leg is 1/2" shorter than my right leg so I already tilt that way. I will make sure to use my left arm for balance.
You have 2 right legs .............