Pedersoli Patent Breech design

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Britsmoothy

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Pedersoli bess's and possibly other military reproductions do not have patent style breeches.
Their Indian trade gun does.
 

springfield art

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I'm one of those shooters who does not like patent breeches at all. I cannot understand why they dominate the factory market when they, IMHO, offer no noticeable advantage nor a reason for them. But I have to say my two Pedersoli never gave me any problems at all.
Many times the modern manufacturing methods dictate why/how something is made. Doing something the best, old way often conflicts with financial considerations. I believe we're fortunate to even have companies like Pedersoli, etc., around at all in this modern world.
 

springfield art

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Pedersoli bess's and possibly other military reproductions do not have patent style breeches.
Their Indian trade gun does.
I'd like to have a nice Trade Gun, but would want one of the ones more traditionally made or assembled, so that would leave out the Pedersoli. Thanks for the info.
 

Snooterpup

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Hello All! jcs266 is right, it is a chambered breech very much like CVA but with a longer breech plug. I have one of the Pedersoli Hatfield rifles (same for Cabela's Blueridge or Pedersoli's Frontier rifle.) in .50 and the face of the breechplug is almost flat (very little coning) with a very narrow powder channel that was .218 in diameter. (see photos below.) This channel can easily get plugged with fouling causing ignition problems. I was never too keen on just how narrow the powder channel was so here are the before and after photos of my modificaton. You MUST first remove the liner or drum before attempting to remove the breech! This modification increased the powder channel to .326 diameter. (You must also shorten the liner or drum also.) Using a four jaw chuck in the old metal lathe, I drilled out the breech to the new diameter of .326. The hose clamp jig held the liner in place so it could be drilled to length at the same time. I tapered the new hole to funnel the powder charge into the channel easily. I think this improve ignition and allow a proper black powder brush in .32 caliber that will clean out this new chamber. I shudder to think what could happen if a modern .22 brush came apart in the old .218 diameter channel. I believe the Pedersoli military reproductions have a traditional breech and do not have this potential issue. Thanks to all, here are the photos... sorry about the duplicate photo.View attachment 73393View attachment 73393
IMG_1106.JPG
 

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Snooterpup

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Folks have asked about the Pedersoli breech. My Pedersoli is a chambered breech. Have a look at Zonie's drawing of a chambered breech. While this appears somewhat similar to Zonie's picture of a CVA they are not the same. I have heard the CVA's cannot be removed. I have no experience with Lyman or Investarms and cannot comment on those.
 

Zonie

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CVA's breech can be removed but to do it the drum or plug with the vent in it has to come out first. After it is out, the breech plug at the rear can be unscrewed.

The problem is, when the breech is reassembled, the threaded side hole in the barrel must line up exactly with threaded hole in the breech plug. "Close" isn't good enough.
 

Snooterpup

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CVA's breech can be removed but to do it the drum or plug with the vent in it has to come out first. After it is out, the breech plug at the rear can be unscrewed.

The problem is, when the breech is reassembled, the threaded side hole in the barrel must line up exactly with threaded hole in the breech plug. "Close" isn't good enough.
Very similar to my Pedersoli. Reassembly my be spot on as the liner must thread through the barrel and also through the breech plug. Make certain the witness marks line up exactly.
 

Kansas Jake

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My Traditions flint 36 Shenandoah experiences the same problems the original poster noted. I use the thump on the off side or tapping the butt on the ground after loading powder to help it fire more reliably.

Snooterpup, I like your resolution, but most of us don't have the equipment to do modification.
 

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