dr1445
Why are you knurling a 44 cal bullet, if you are wanting 36 cal?
If you measure the chambers of your 44 properly, you will find almost all of them will be .446 to .448 in diameter,
Knurling up to .452 isn't going to accomplish anything in the way of fit going down the barrel. You are just going to shave that .002 back down to .450
when you load it, anyway.
Will the knurling make it a tighter fit to the chamber? Maybe, but probably not enough to matter.
Rodwha
I didn't say it was his bullet. I just said the heavier bullets.
These guns are not designed nor proofed to with stand the heavier pressures.
If they were there would be no need for conversion cyclinders.
One could just machine out the nipple and chambers to take a cartridge.
And presumably a hotter powder.
But that is not the case.
I don't have the formula anymore for figuring pressures.
But if BP ignites and creates XXX pound of pressure to move a 140 grain round ball with XXX amount of friction fit psi holding it in place.
Then you know that the pressure has to increase in order to move a 240 gr slug with a larger seating area and thus a larger psi friction holding it in place.
I'll see if I can find that formula again.
That's the main reason I kept my 195 and 190's under 200gr,
They are still about double a round ball in impact force energy
But are not so heavy as to allow too much pressures to build.
Yes you may get away for years shooting those 220 240 255 grain slugs.
But one day the next may be one two many.
And Rod you've seen first hand what can happen, and are lucky no one was injured when the gun let go,
These replicas are not magnums, were not designed to be. No need to over stress them.
You want that kind of power and recoil, use a gun designed for that.
take your .357 or your 44 mag and load some hot black powder shells
and some pure lead bullets and shoot them out of it.
At least those guns are proof tested to withstand any reasonable BP generated pressures.