Pistolero
Well-Known Member
The saga continues.....
Pulled the S&W 625 barrel this afternoon, and then just for grins, turned the barrel back as far as it would go hand
tight. 45 degrees short of clocking up for the front sight. Yikes! Here is a pic of it before anything was done.
Took off 0.001 from the bbl shoulder, and checked again, did about 15 deg better. Here is what 0.001" trim
on the shoulder did for the clocking. And there is a target, one of the better groups......with a huge flier.
So, took off another 0.001", a bit better. Another 0.0006" (DRO is very handy) and we are getting close,
so take off 0.0004" and it is just a couple degrees short of lining up the front sight when hand tight.
Here is a look at the frame and barrel junction when it was considered done, hand tight.
Blue loctite, and snug it up to align the sights just straight with the grip frame. Pin gauge shows perhaps
0.0005" or less residual choke, but a close look shows a trace of lead, will scrub a bit more with a Lewis Lead
Remover and see if it is all gone or whether it will need a tiny bit of firelapping. Hope not, I am not a big
fan of firelapping, but know it can be a good thing if you have to do it.
Will see what Mr. Target has to say.
Oh, darn.....can Brad or someone fix that lower case "w" in the title, please.
Bill
Pulled the S&W 625 barrel this afternoon, and then just for grins, turned the barrel back as far as it would go hand
tight. 45 degrees short of clocking up for the front sight. Yikes! Here is a pic of it before anything was done.
Took off 0.001 from the bbl shoulder, and checked again, did about 15 deg better. Here is what 0.001" trim
on the shoulder did for the clocking. And there is a target, one of the better groups......with a huge flier.
So, took off another 0.001", a bit better. Another 0.0006" (DRO is very handy) and we are getting close,
so take off 0.0004" and it is just a couple degrees short of lining up the front sight when hand tight.
Here is a look at the frame and barrel junction when it was considered done, hand tight.
Blue loctite, and snug it up to align the sights just straight with the grip frame. Pin gauge shows perhaps
0.0005" or less residual choke, but a close look shows a trace of lead, will scrub a bit more with a Lewis Lead
Remover and see if it is all gone or whether it will need a tiny bit of firelapping. Hope not, I am not a big
fan of firelapping, but know it can be a good thing if you have to do it.
Will see what Mr. Target has to say.
Oh, darn.....can Brad or someone fix that lower case "w" in the title, please.
Bill
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