Take a look at these Nipples!

[Britsmoothy]

Can you not solder an insert in the ones you have?

 

[nit wit]

I bet you will have no problems getting fire to the charge!
Nit Wit

 

[Cowboy]

BSF stands for British Standard Fine. It is a standard for screw threads used in the UK.
Not only are these threads different in the thread pitch but the shape of the threads are different when compared with the UNC and UNF threads used in America.
There is also a BSW thread standing for British Standard Whitworth. These are the "Whitworth" threads owners of old British cars sometimes run into. Not only is the Whitworth thread a different shape and pitch but the wrenches needed to tighten or loosen them are a different size when compared with the American style threads.
Adding to the confusion, there is also a British Motorcycle thread. Most of the different sizes of this use a 26 pitch thread.

Thank goodness, most of these old style threads are not used any more for new production so now the main threads are the American UNF and UNC and the Metric thread series.

We can always depend and expect a detailed answer from Zonie. It just amazes me how he can throughly break everything down into coherent information that even I can understand. Zonie has taught me so much along my personal growth in Traditional Muzzleloading.

I have a bucket list of whom I’d like to sit down with and really get to know. Zonie definitely ranks at the top along with a few others here on the forum.

Respectfully, Cowboy

 

[Eterry]

Can you not solder an insert in the ones you have?

I have no idea where to find an insert...i hope TOW has a proper nipple

 

[Grumpa]

Eterry,

You say you haven't fired the gun. Blowback may not be a problem; Pukka Bundook is right about period mainsprings being much heavier than what we are used to in our repros.

Richard/Grumpa

 

[Eterry]

I guess I could start with a mild charge of about 40 grains and see what happens. The main Springs are very strong much stronger than the reproductions so you may be right.