rodwha
58 Cal.
2013 IIRC
Maximum loads for 1858 Remington
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so I was able to find my way around the pietta site and the 1858 and 1851 do in fact have 1/30 twist but that seems to be plenty for conicals in my 1858. looking down the barrel it certainly does not look like a slow twist.
rodwha
58 Cal.
I’m not sure why they chose to use a slower 1:30” twist. Their Shooter’s Model uses the original gain twist I believe I’ve read. I would assume since it’s a base pistol, mostly for reenactors, collectors, and enthusiasts. I’d venture to guess it’s cheaper/easier than a faster twist. But it’s just a guess.
rodwha
58 Cal.
My 2013 is not a slow twist. It’s roughly 1:16”. It’s a Sheriff’s model.
I put two steiner tractor catalogs together and a stack of Muzzle blast magazines for a total of 4 1/2 inches of news print and glossy print. 200g lee conical 25g T7 most of them went all the way through. I found two of them, the larger one went through both tractor parts catalogs and about an inch of magazines and was recovered in the magazines, the smaller one went all the way through everything and a sheet of 1/4 inch plywood and recovered in the dirt . pictured next to a .495 RB they both felt at least as heavy as the unfired .50 cal ball
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That will do nicely for whatever you need to stay hit.
In my experience that also applies for pyrodex p, ruger old army have been loaded to the chamber mouth then compressed and refilled twice more then seat a ball and lubed. Don't know just how much powder that was felt recoil seemed like a .44 special.
With 25g of t7 there is enough room for both a 200g conical and a.454 rb. I think the move would be to try two round balls first... That would be a nasty load. Wouldn't be brave enough to do that to my 1858 .. I want to keep this one..
I will add that to my experiment list. One chamber only! I have seen 1100 fps with 777, have to check fo lead after a load like that.
So this is bugging me and now I want to try it. .454 RB weighs 140.47g two of them would be 281g I have accidently double balled both of my single shot percussion pistols with no ill effects and surprisingly good accuracy results. the last time i did this I had both .50cal balls about six inches low . Probably a flinch on my part? bur centererd nicly in line with bullseye and the two holes were only about 2 inches apart @ 50 yards. thats a nasty load right there. Imagin if a revolver was loaded with two round balls in each chamber. six double taps on standby. not bad. how dangerous do you think this might be? how bad for a steel frame 1858? 281g projectile with 20g t7?
rodwha
58 Cal.
I ran your numbers through the P-Max Swiss powder calculator and came up with 790 fps producing an estimated 13.7K psi pressure. Run a single ball through a ballistics calculator at 790 fps and each ball has only 195 ft/lbs of energy. Two caliber sized holes though. That pressure spike would give me plenty of pause as I haven’t been able to find any data concerning this.
rodwha
58 Cal.
Just giving you the results the calculators gave.
I like puns and almost always call those historical signs by the hwy Hysterical markers, I have a spare cylinder that I buggered up the threads on one of the nipples so its a 5 shot spare. Right now it has a single load of 15g of T7 3f and two .454 140.47g round ball compressed. will this stress anything other than the cylinder on my 1858?
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