Do none of you realize yet that a 45-70 is
only 10 more grains of
BLACKPOWDER than a walker normally shoots? The extra pressure on the gun will be nothing at all especially if i have a custom thicker and heat treated cylinder. Don't even say that the projectile causes the pressures to be higher because that's false, it will have slightly more recoil as there's more friction in the barrel of the gun but nothing extra on the cylinder. And putting the bullet and powder into a cartridge actually
DECREASES pressure on the cylinder walls contrary to all your beliefs.
PLEASE LOOK AT THIS CHART
Notice the differences in size and pressure of the modern powder? I don't want a BFR as the recoil is 5 times what a 45-70 blackpowder walker would be. Think of it this way, black powder is a push back while modern smokeless is a punch in the chest.
Some of you aren't even worth replying to, i didn't expect to find physicists and engineers on this forum but this is just horrible. At least read all my posts before commenting, i have already explained everything i need to. And i have come to the realization that i never needed any of your advice anyways as i pretty much have every planned out already. I just wanted to see if anyone has done something like this and get advice from gun smiths.
So to summarize the posts i've been getting.
#1 To much pressure on the cylinder.
Answer, I am resizing the cylinder if the walls are not a safe size. The sizes will be sourced from a modern 45-70. So if its thick enough to handle modern charges with 5 times the pressure than it can sure handle some old FFFG powder.
#2 Arbor
I understand the physics you are trying to explain to me, but the pressure on the arbor will be less than half a modern Colt SAA. And the thing is that the walker arbor is almost a 1/2 inch steel rod, compared to a tiny pin in other cartridge revolvers. As long as its tight the threads wont budge at all. This is why a lot of cannnons have threaded on breaches, threading is actually very strong even with a slight off center force.
#You are going to end up in the hospital.. bla bla bla.
Did you guys miss the part where i said id test the gun in a remote location behind a bullet proof object? I will test the gun with multiple powders that rate higher pressures like triple seven. I am not a redneck that will hack this thing together in my garge. All the parts will be heattreated, trued, and proofed.
SO AGAIN since some of you aren't fond of reading this is
NOT meant to fire modern ammo "examine chart again", this is meant to fire the same propellant cap and ball guns usually use. The modification is for ease of reloading, not to sporterize the gun to fire arm breaking modern 45-70 rounds. OK? Seriously i don't understand why some of you are so pessimistic, sarcastic and negative. Custom guns way more ambitious than this are built every day.
I have been around the whole "newbie" forum thing many times, you all automatically assume i'm a dunce that's never shot or built anything before. But i actually have a great passion for mechanical engineering, prop and historical prop making, and even physics "mostly astrophysics". I even love working on cars and engines. I have been nothing but kind to you all, even when blatantly insulted. Sarcastic insults are not welcome, i have been nothing polite as i expect it in return. So there's my credentials boys i still have yet to know if any of you are even gunsmiths... How about before you make anymore bold claims you back up your allegations with proof okay? Links to articles, forums, and videos would suffice. Thanks
To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.
-Albert Einstein