Bill Calfee
Gun Fool
Finally post chamber lapped little "Old School"
CYA friends:
I finally got little "Old School" post chamber lapped.
When one post chamber laps a chambered and finished barrel it has to be done in a jig...
Actually, I do all of my lapping in a jig.....but it is an absolute must with a chambered barrel...
_____________________
Anyway, I was going to cast a new lap, then inspected my last finishing lap, closely, and decided it would work fine..
So I shot the bore full of oil, inserted the lap and extended half of it out of the muzzle....
I then cut it off.....leaving the lap half as long...
I then bumped the lap up, at the muzzle.....( if you tried bumping up a lap in a taper lapped bore at the breech, you'd never get it back to the muzzle...........)
And then in the actual lapping, I used a trick that I've taught the CYankee schmidts......to keep from restricting the bore at the breech..
When you lap a bore in a jig, you wind up restricting both ends of the bore......
Restricting the muzzle end is kool, but, restricting the breech end kills accuracy.....
____________________________
Anyway, little "Old School" is finally PCL'd.......
And it is absolutely perfect.......the perfect slow slugging feel, and, the perfect fast slugging feel......( the fast feel is the most important)
_____________________
So, this little thing is perfect, which means, it probably won't shoot in a bucket.......
It's windy right now.........but the day ain't over.........
Your friend, Bill Calfee
________________________
The little thing is absolutely perfect, which means it probably won't shoot in a bucket........
If you look closely at the lapping rod, you'll see the "gray mud" that is produced while one laps...bc
_____________________________
CYA friends:
I finally got little "Old School" post chamber lapped.
When one post chamber laps a chambered and finished barrel it has to be done in a jig...
Actually, I do all of my lapping in a jig.....but it is an absolute must with a chambered barrel...
_____________________
Anyway, I was going to cast a new lap, then inspected my last finishing lap, closely, and decided it would work fine..
So I shot the bore full of oil, inserted the lap and extended half of it out of the muzzle....
I then cut it off.....leaving the lap half as long...
I then bumped the lap up, at the muzzle.....( if you tried bumping up a lap in a taper lapped bore at the breech, you'd never get it back to the muzzle...........)
And then in the actual lapping, I used a trick that I've taught the CYankee schmidts......to keep from restricting the bore at the breech..
When you lap a bore in a jig, you wind up restricting both ends of the bore......
Restricting the muzzle end is kool, but, restricting the breech end kills accuracy.....
____________________________
Anyway, little "Old School" is finally PCL'd.......
And it is absolutely perfect.......the perfect slow slugging feel, and, the perfect fast slugging feel......( the fast feel is the most important)
_____________________
So, this little thing is perfect, which means, it probably won't shoot in a bucket.......
It's windy right now.........but the day ain't over.........
Your friend, Bill Calfee
________________________
The little thing is absolutely perfect, which means it probably won't shoot in a bucket........
If you look closely at the lapping rod, you'll see the "gray mud" that is produced while one laps...bc
_____________________________
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