3/4-10 Breech Plug?

[Khym]

I’ve put together a few kit guns and done a moderate amount of modern gunsmithing (trigger jobs, scope mounts etc. and was one of the Glock certified armorers for my department).  Now I’m going to attempt a muzzle loading rifle, mostly from scratch, and using, where I can, parts I’ll make myself.

I was given a Numrich .50 caliber barrel and I intend to install the breech plug myself.  I’ve got another barrel that is already threaded but a breech plug has not been installed, so I have an example to refer to.

I have lathe, mill, drill press and assorted hand tools.

I’d like to make the plug from a grade 5 ¾-10 bolt I have in my junk box.  Would that be suitable for a breech plug?

[smallpatch]

Khym,
Will totally work, but grade 5 isn’t necessary. All I’m aware of are just mild steel.
I assume you’ll weld the tang on when done? Definitely go mild steel on that.

[flinchrocket]

FYI, 3/4-16 is the standard tread.

[Bob Roller]

FYI, 3/4-16 is the standard tread.

I would prefer the 16TPI but the 10 will work.
Bob Roller

[Khym]

Thank you.

[Clint]

Get the bolt that will fit the barrel you have. The important detail about grade 5 or 8 bots isn't so much the alloy but the quality of the thread itself. One of the nice things about a bolt breach plug is that you only need to worry about seating the face of the plug on the bore. Once you have a good fit you can cut the bolt to size and "self clock the tang on your milling mach. You can also make a hook breach, pretty easily with a Bridgeport.