breech plug mod.

[kennacl55]

If I have a precision stainless plug that is head spaced for my smokeless conversion can the vent liner be removed and be fitted for a tungsten carbide bushing? If so whom on this board could do the modification?

[billc]

I read on here about using a vent liner to hold a bushing in place. I took an old "worn out" vent liner, opened it out some more, and used it to hold a bushing in place. Not as pretty as some other methods, but it worked.

[cuda]

The carbide bushing are 1/4" and that is bigger than the screw in vent liner. I will need to be drilled out and then taped for the locking ring. I know I did it for my 45cal it had the old breech plug with the screw in liner. It now has a bushing in it I used my mini lathe to do it. I used a 1/4" endmill then the drill for the tape then tap it without taking it out of the lathe.

[kennacl55]

Did you leave the lock ring flush with the end of the breech plug or recess it slightly?

[cuda]

Sorry I missed this had the grandkids for a week and missed this. I like to recess mine down in farther about a 1/2" or more I feel it lights the powder better. But you can leave it flush if you are doing it for you self. I have two buddies there bought a bunch of the screw ins a few years ago. They looked at my BP and they want me to do theirs like mine. When you do things like this you do it the way you want too. I had a recessed one in my 50 10ML-ll so I the same for my 45cal.

[ET]

Sept 28, 2019 10:52:45 GMT -5 cuda said:

Sorry I missed this had the grandkids for a week and missed this. I like to recess mine down in farther about a 1/2" or more I feel it lights the powder better. But you can leave it flush if you are doing it for you self. I have two buddies there bought a bunch of the screw ins a few years ago. They looked at my BP and they want me to do theirs like mine. When you do things like this you do it the way you want too. I had a recessed one in my 50 10ML-ll so I the same for my 45cal.

I agree a recessed BP makes a great fire starter for powder. Especially for slower powders.

Ed

[kennacl55]

do you use lock tight on the bushing and lock ring or just the lock ring threads?

[cuda]

Yes you do use the lock ring the tapping and threading was for the lock ring. It takes longer to get it all set up than it takes to really do it. The first time I did one it took me about an hour with setting it with my dial indicator. And then running the 1/4" end mill switched to the drill then the tap for the lock ring. Took it out cleaned it out put the bushing in then loctite the ring and tightened it in.

[BuckDoeHunter]

Jul 1, 2020 21:59:07 GMT -5 kennacl55 said:

do you use lock tight on the bushing and lock ring or just the lock ring threads?

I've only used anti seize on my bushings and lock rings. I remember a while back where some were using bearing compound on their bushings to fill any gaps around the bushing to help prevent them from cracking. I believe those were pure tungsten bushings that were cracking. When I deep clean my muzzleloaders at the end of hunting season, I like to remove my lock rings and bushings to check for flame cutting, pitting, cracks, etc.

[ported45]

Anybody have any idea what the ASG retaining rings run for thread and pitch?

I'm wanting to do the same thing for one of my vent liner plugs and already have the bushing and retaining ring from Luke (and I have reached out to him, just haven't heard back yet).

[cuda]

Did you find out yet? You can take it to any hardware store like ACEHARDWARE. Or any tap and die set will have a thread gauge you can match it right up to.

[ported45]

I have 1/4" and found a 3/8" bolt at the house and the lock ring is between those sizes, so it's either a 5/16" or a metric. I had messaged Luke on Facebook Messenger, but no reply as to the diameter and pitch.