Feinwerkbau History No. 1 patent breech?

Frod733 · Oct 31, 2024

Greetings.

I was able to obtain one of these fine underhammer pistols. It seems I read somewhere that these have a "patent breech", that is a breech area of a different size than the barrel. Is anyone aware of this? And, if so, what is the diameter of that area? Looking to be able to clean it properly. Thanks.

Nobade · Oct 31, 2024

You should be able to look down the barrel with a flashlight and see if it does or not. To clean them I use a patch wrapped around a much smaller than bore size bronze brush.

Frod733 · Oct 31, 2024

Thanks. At 36 caliber, it is hard to see down the long barrel to define anything.

No second place · Nov 1, 2024

I have some match pistols with the PIA breech. I have had to turn down a bottom scraper brush to properly clean these. A cleaning patch wrapped around a .22 cal. brush will swab it but the bottom scraper is needed to be through...nsp

dd832 · Nov 7, 2024

This is what you are looking for:

These are pictures from the Feinwerkbau site that I copied years ago. I have no idea of the inner diameter of the patent breech though, .... you're on your own there.

Mike

Frod733 · Nov 7, 2024

Thanks much. That helps a lot. I will experiment to find the right diameter of the patent breech.

Feinwerkbau History No. 1 patent breech?

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Frod733

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Feinwerkbau History No. 1 patent breech?

Help Support Muzzleloading Forum:

Frod733

40 Cal

Nobade

32 cal

Frod733

40 Cal

No second place

50 Cal.

dd832

40 Cal.

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40 Cal

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