I did experimenting with heavyweight conicals--which were bullets for modern .45 caliber revolvers,
WV Hillbilly, how did those cartridge pistol bullets shoot in your pistol?
They performed better as far as penetration on tough targets. I never used them on hunting animals though. They were pretty difficult to get seated easily. I recall that the soft, swaged lead, 200gr, semi-wadcutters from Speer worked about the best as far as getting them to "center" in the chamber. They actually shot fairly well, but I think it was because of these heavier bullets and my maxxing the powder charges every time that I managed to loosen up the gun (ruin it) so badly.
I also didn't have a chronograph or a pressure testing setup to see what was actually going on in the gun. They did recoil harder than the round balls--due to the bullets weighing about 59gr more than the round balls. I was too unaware, (or too stupid, remember this was my first cap-n-ball revolver), of what was happening to realize that they were beating the gun to death. I guess it was because they did shoot so well, that I just shot those bullets exclusively, and rarely shot round ball through it at all, especially after finding a modern pistol bullet that worked so well.
IF I were to do it all over again, I wouldn't even think of using them with maximum powder charges. I would be very cautious with ANY conical bullet. Of course, since that time, I have managed to acquire bullet moulds for the proper conical bullet which also happens to weigh approx 200gr.
The last time I had a .58 Remington (brass frame) out, I shot some conicals and Pyrodex P and they still did not shoot as accurately as the round balls with Pyrodex or BP. I used my head this time, and I also used a much lighter powder charge for the conicals. There really was a big difference between the loads. I am going to stick with the round balls. They are what the guns were intended to shoot most of the time anyway.
So if you do tty this, make sure you are using a soft lead bullet for accurate seating of the bullets, and back off on the powder charges. I would decrease the charge by 25-30% for the bullets. Make sure you test the loads on paper. If anything sounds unusual--STOP. Check your gun for tightness often and if you see anything unusual--STOP.
Make sure to keep the gun really clean too--because these bullets can lead up much easier than round balls. There is a lot more bearing surface riding the bore with the conicals, so it only makes sense that they would lead up the barrel quicker than if you just used the round ball.
Good luck if you decide to try it, and take even more time and care when loading. If you need any help I'll be around here some time tomorrow morning.
ALWAYS use a BIG enough gun, or get TWO smaller ones...
Shoot Safely,
WV_Hillbilly