Pedersoli 12g smooth bore open cylinder rb ?

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Swamper88

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How are you guys , new to this and I just got a percussion 12g smoothbore open cylinder no choke shotgun. I’m wanting to shoot round ball from it and trying to figure out how and what size ball and size patch, my bore is .720 dia

And also would like to shoot buck shot.
Basically I’m not green black powder but am to a black powder shotgun I know about the powder ect can anyone guide me before I order wrong stuff thanks in advanced
 
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There is no magic bullet for what you want to do. Pretty straight forward.

Find a ball and patch combination that will keep the ball from bouncing along the walls of the bore. It doesn't need to be a super tight fit because you're not trying to fill the rifling or achieve twist.

In my .690 smoothbore I'm using a .662 ball and a .015 patch. Gives me .692. Works great.

If you can find a .690 ball and some .018 patches, you're golden. Just keep juggling the math between available balls and available patches until you find a workable combination.

Good luck.
 
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A Pedersoli "12 ga" can run from really being a 13 ga to an 11 ga. Yes, measure the bore carefully, trying multiple moulds can be expensive. For my "12 ga." Brown Bess I used a .715" mould. Others here have reported using larger or smaller balls. My SxS "12 ga." Ped. shotgun was actually a 14 ga. I never tried round balls in it.
 

Swamper88

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Yeah I’m going to mic it to make sure , but says it’s .720 bore so we’ll see guess I just have to mess with stuff n see what’s what - shooting buck shot should be interesting see how that goes too
 

Swamper88

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I found a 80cal .10 patch with the .715 ball fits good so I’m going that route - I’ll seehow it shoots, and mess with the buckshot - but I figured it’ll be a good lil turkey gun/ small game if I can shoot the round balls decent then I’ll use it for deer n hog
 
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