cutting chamber

K

kasjaka

Guest
Does a 22rf chamber need to be polished or lapped after reaming and if so how is it done.
thanks
KASJAKA
 
You are basically asking a gunsmith how he does his job. I doubt you will get many replies.
I'm not a gunsmith but rather just a shooter. My borescope tells me that chambers are not polished. Some are really rough. It's what is downstream of the chamber that really counts. I suspect it's because it will make the chamber larger? A lot of folks polish the leade area and about a foot down the barrel with Flitz, Semi-chrome, or J-Bore Bright.
I could be wrong and probably am. This is just my uneducated opinion.
 
Polish

They sure do....and they ask you to leave when they get ready to or set the work aside till you have left.:)
 
The lead is the most important part to finish. There are may ways and thoughts on this, but you want to make sure it is smooth and burr free.

Chamber finishing is one of Calfee's big secrets according to him.
 
Two common methods to finish the lead are a hardened hob and VFG felts. Jim Boatwright and Bill Calfee have written in PS about lead finishing hobs. Calfee has posted some info on this website about hobs but don't know if it is still available or not. I use VFG felts and lapping compound on leads and it seems to work well. I know of one rimfire gunsmith that uses VFG felts. I am not a gunsmith so take it FWIW.
 
VFG Pellets. That does sound like a good idea. I have been using tight patches wiht some lapping compund and flitz. Been thinking of trying a hob, but this method seems to be working well for me.

If only I had more time and barrels.....
 
The original poster asked about polishing the chamber. He said nothing about polishing the leade or anything else. I knew I should have kept my mouth shut.
 
How do you hold them?

WSnyder said:
Two common methods to finish the lead are a hardened hob and VFG felts. Jim Boatwright and Bill Calfee have written in PS about lead finishing hobs. Calfee has posted some info on this website about hobs but don't know if it is still available or not. I use VFG felts and lapping compound on leads and it seems to work well. I know of one rimfire gunsmith that uses VFG felts. I am not a gunsmith so take it FWIW.
Click to expand...

WSnyder,

Maybe we are a little off topic but could you explain how you hold the pellet to do the polishing for the leade?
 
Jags are made specifically for the felts. Brownells carries them. I took the handle portion off an old Hoppes 22 cal three piece rod that's been laying around unused for years and re-threaded the end for one of the jags.

Maybe we are a bit off topic but have you noticed how often we learn something new when posts stray a bit from the original question? Kind of like when real conversations evolve around a thought or statement.
 
I don't think it's off topic at all, so I'll throw this in. I use the VFG (can only imagine what VFG stands for, Very F'ing Good) pellets and Denny Phillips made me a rod with a 8-36 male thread to accept the adapter, which is made for a Dewey .22 rod. The adapter has like a acme thread and then a smooth end, you can either thread the pellet on, or just slide it on the tip so you can take it off easy after it clears the muzzle. If you thread the pellet on, I can see how you could use it as an arbor of sorts. They also make an adapter with a male 8-32 thread for rods that have a female thread, but for some unexplained reason, these adapters don't have the smooth tip, the acme thread is all to the end. Thanks, Douglas
 
Thought I read once that was so when the brass swelled from ignition/exposion it 'stuck' to the chamber (without shifting). Though that was probably in a centre fire.
 
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