Paper cartridge know-how ? (Muzzleloading)

by Fabian23 ⌂, Switzerland, Tuesday, August 21, 2007, 18:09 (4608 days ago) @ tommy303

Hi Fabian,Did not the Chassepot use a rubber bushing around a cone on the
bolt face to seal the breech? I understand that the issue cartridges
sometimes contributed to fouling around the bushing which led to some gas
leakage; have you experienced anything like that with your cartridges?

The rubber bushing is behind the conical bolt face, not around it, the pressure from ignition pushes the cone back, causing the rubber bushing to expand and seal the chamber. I have never had any gas blow back from mine, luckily common 18mm plumbing washers are perfect for replacing the brittle originals.

Another possible source of gas leakage is along the needle channel in the bolt, but again, a proper fitting needle will eliminate this. The real problem is ash build-up in the chamber from the cartridge. After each shot the chamber is effectively shortened until the cartridges no longer fit. I usually manage 5-6 shots before I give the chamber a quick brush. My cartridges completely combust, but there is a school of thought that says that the paper should in fact be
heat resistant, such that it simply gets blown out of the barrel and leaves little residue.

I only do the standard competition series of 13 rounds so I can not speak for what happened in the field after 40-50 rounds.

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