Reboring a rifle barrel

[Terry Reynolds]

I have a Green Mountain barrel I would like to rebore from 50cal rifled to 62cal smooth bore. It is 42" long and 7/8" across the flats. Can this be done? Anyone close to Louisville, Ky. that does this type of work?

Thanks

[smylee grouch]

That would leave about an eighth of an inch wall thickness if my math is right. Sounds too thin for my blood. 

[rich pierce]

Bobby Hoyt is the one. He’s in PA. I think .54 is your upper limit.

[Dphariss]

I have a Green Mountain barrel I would like to rebore from 50cal rifled to 62cal smooth bore. It is 42" long and 7/8" across the flats. Can this be done? Anyone close to Louisville, Ky. that does this type of work?

Thanks

Too thin the properly thread for the breech.
PM me.

[Marcruger]

In my world, a barrel rifled by Green Mountain is one of the gold standards.  I couldn't imagine wanting to cut that rifling away.   God Bless,   Marc

[Roger B]

Agree on the resultant thiness & quality of GM. If you dont want the rifled barrel, then sell it or trade for a smoothbore to your liking.
Roger B.

[Birddog6]

Breech will be way too thin. The breech & first 8-12" is where all the pressure is.

And that brings something else to mind. Some get it in their heads that "Oh, I'm shooting
a shotgun, it won't have as much breech pressure."  Wrong.  It has MORE breech pressure.
When you shoot a round ball, that round ball stays the same.  When a shotgun fires, those
wads & the shot all bunch together, and as it does so, it causes barrel wall friction & outward
force against the walls of the barrel. Thus the shotgun has More breech pressure than when
shooting a roundball of same caliber.
Now some don't agree with that, but it's OK to disagree. 

[heinz]

Terry, that barrel conversion is just not a good idea.  7/8 is too big a bore, 3/4 would be marginally too big, and the profile is not going to look right for a big smoothbore gun.
I do not know if you have this barrel in a finished gun, but, either way, you would be better selling the barrel, or gun, and getting stock and barrel based around a musket or fowler style

[PAFlinter]

Bobby Hoyt is the one. He’s in PA. I think .54 is your upper limit.

This!

[varsity07840]

Bobby Hoyt is the one. He’s in PA. I think .54 is your upper limit.

He won't do a .54 in anything less than 15/16.

[Terry Reynolds]

I appreciate all the responses, looks like i won't be travelling down the road I had hoped. I'll finish the gun as a 50cal and live with it.


Thanks again.