sharp edge removable pilots

D

Dennis Sorensen

Guest
Have any of you damaged a barrel with a removable pilot with a sharp edge?

I didn't check the pilot and on a long PT&G rod, inserted it in the barrel... it went in about 4 inches and then got snug and then stopped cold... I wasn't pushing that hard.

It turns out I scraped a land and have ruined the barrel... what a piss off. I have since beveled and polished the pilot and will check them more carefully in the future... it sure didn't take much push to do this...
 
Dennis Sorensen said:
Have any of you damaged a barrel with a removable pilot with a sharp edge?

I didn't check the pilot and on a long PT&G rod, inserted it in the barrel... it went in about 4 inches and then got snug and then stopped cold... I wasn't pushing that hard.

It turns out I scraped a land and have ruined the barrel... what a piss off. I have since beveled and polished the pilot and will check them more carefully in the future... it sure didn't take much push to do this...
Click to expand...
Dennis, if you had a couple of tenths of clearance where the bushing started in there must have been a "fault" or an occlusion or something to cause it to snag, unless, the bushing had a wire edge burr that rolled under.

(Note-a "fault is an old ground hog term for any irregular place a ground hog might be lurking--as in "see that fault over there, do I see some ears or is that a weed!')
 
It was a quality barrel...so I doubt an occlusion... but the pilot went in the first few inches okay... very sharp edge though...
 
Dennis Sorensen said:
Have any of you damaged a barrel with a removable pilot with a sharp edge?

I didn't check the pilot and on a long PT&G rod, inserted it in the barrel... it went in about 4 inches and then got snug and then stopped cold... I wasn't pushing that hard.

It turns out I scraped a land and have ruined the barrel... what a piss off. I have since beveled and polished the pilot and will check them more carefully in the future... it sure didn't take much push to do this...
Click to expand...



Dennis, I doubt that you've ruined the barrel. Won't the chamber reaming operation go beyond this point anyway? If I were you, I would go ahead and fit up the barrel and ream the chamber and I'll bet you can't find the spot your talking about with the borescope.

BTW, I make it a habit to place all new pilots in a little tabletop mini lathe and smooth the sharp edges with a small diamond lap before use. Bet you will too from now on; huh?
 
Gene Beggs said:
Dennis, I doubt that you've ruined the barrel. Won't the chamber reaming operation go beyond this point anyway? If I were you, I would go ahead and fit up the barrel and ream the chamber and I'll bet you can't find the spot your talking about with the borescope.

BTW, I make it a habit to place all new pilots in a little tabletop mini lathe and smooth the sharp edges with a small diamond lap before use. Bet you will too from now on; huh?
Click to expand...

It has been inspected with a bore scope and the damage is there... and it is ahead of the throat... the barrel can't be set back any more... I have written it off...

I sure will inspect all pilots more closely...
 
I did this with a barrel with a long lapping bell..... just used a too-small pilot. No harm done but it took very little force to curl up the lands. Now that I'm using the Gritters setup I take the time to slip the rod into the bore by hand before deciding on pilots.
 
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