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Author Topic: Which round ball for Pietta Army?  (Read 126 times)

Offline Bob Dwyer

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Which round ball for Pietta Army?
« on: February 08, 2021, 04:16:03 PM »
So. I am new to the black powder pistol scene though ive been shooting black powder in my Great Plains quite some time. Some people say to shoot .451 round balls in my Army, others say .454 is better. How do I know which is right for my Pietta?
Bob

Offline ShotgunDave

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Re: Which round ball for Pietta Army?
« Reply #1 on: February 08, 2021, 05:29:33 PM »
Bob, you'll have to start by knowing what size you chambers are. If you have a caliper, take a nominal measurement and go from there. You want the ball to be big enough to fit tightly in the chamber without moving under recoil. It should shave a little lead off when you push it into the chamber with the lever.

If it helps, I use .454 in my Pietta Army revolvers.
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Offline Hawg

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Re: Which round ball for Pietta Army?
« Reply #2 on: February 08, 2021, 05:30:20 PM »
just go with .454 and fuggetaboutit.
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Offline mazo kid

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Re: Which round ball for Pietta Army?
« Reply #3 on: February 08, 2021, 05:46:44 PM »
You won't go wrong with .454"  round balls. I think it may depend somewhat on the vintage of your gun; I have some older gun boxes that say .451" round ball.

Offline Lyle

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Re: Which round ball for Pietta Army?
« Reply #4 on: February 09, 2021, 08:57:22 AM »
A velocity chart is listed in the link below. For 44ís it shows a velocity difference simply by using a larger ball.

http://poconoshooting.com/blackpowderballistics.html


Offline mazo kid

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Re: Which round ball for Pietta Army?
« Reply #5 on: February 09, 2021, 06:51:23 PM »
Yes, a definite difference. Is this because of the weight, the tighter fit in the chamber or the wider "belt" on the round ball? Maybe a combination of all 3.