I just bought a DGW Cub (Pedersoli made) and want to buy a spare vent just in case. Dixie's literature says it's a 5/16X20 while various muzzleloading supplier say it's an M8-1.25 thread. Pedersoli's literature gives no info on spare parts. Please comment.
Pedersoli Vent (touch hole)
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@jps2486 This is what Pedersoli says on its store site:
Set 3 flash holes for "Pedersoli" guns (davide-pedersoli.com)
Set 3 flash holes for "Pedersoli" guns (davide-pedersoli.com)
The Pedersoli site says their liner is M8x1.25.
I think Dixie is, "close but no cigar."
8 mm = 0.3150". 5/16" = 0.3125"
1.25 mm = .0492" which when converted into threads per inch equals 20.320.
Due to clearances in threads, and the fact that a 5/16" thread is slightly smaller than a 8 mm thread, it might be possible to screw a 5/16-20 thread into a M8-1.25 threaded hole but it isn't a good idea, especially in a pressure situation like one sees in firearms.
If the hole is indeed a M8-1.25 metric thread then use a vent liner that has the same thread.
8 mm = 0.3150". 5/16" = 0.3125"
1.25 mm = .0492" which when converted into threads per inch equals 20.320.
Due to clearances in threads, and the fact that a 5/16" thread is slightly smaller than a 8 mm thread, it might be possible to screw a 5/16-20 thread into a M8-1.25 threaded hole but it isn't a good idea, especially in a pressure situation like one sees in firearms.
If the hole is indeed a M8-1.25 metric thread then use a vent liner that has the same thread.
Here's what Dixie shows: Vent Liner
Pedersoli typically uses M8x1.25 for vents and drums, like so: Vent, Touch Hole Liner, M8-1.25 thread, stainless steel, slotted for easy removal for Davide Pedersoli guns - Track of the Wolf
I guess it's possible Pedersoli uses an imperial thread on the guns made specifically for Dixie, but I don't know.
I think I'd go right to the source and see what they have to say: Contacts | Davide Pedersoli
Pedersoli typically uses M8x1.25 for vents and drums, like so: Vent, Touch Hole Liner, M8-1.25 thread, stainless steel, slotted for easy removal for Davide Pedersoli guns - Track of the Wolf
I guess it's possible Pedersoli uses an imperial thread on the guns made specifically for Dixie, but I don't know.
I think I'd go right to the source and see what they have to say: Contacts | Davide Pedersoli
Threads can be tricky. Some metric and imperial threads can be too close to tell visually. I have the Brown Bess ramrod adapter from Track that adapts the Pedersoli Bess's M5-.8 threads to accept 10-32 jags and such. The threads look indistinguishable, and interestingly, 10-32 jags will thread into the M5-.8 side of the adapter, but the metric threads on the rammer won't fit into the 10-32 end of the adapter. 
Track of Wolf has the M8x 125 liner that you need.
My Pedersoli trade gun is 8x1.25mm.
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My pedersoli pennsylvania rifle is also M8x1.25.
Chris
Chris
