Finishing a 22lr chamber after reaming

[wk4036]

I know this is usually a hush hush trade secret but some of you guys still believe in helping others advance in the sport but I can also respect the time and money that went into what you have learned so let's see where this goes and Thanks in advance.

 

[Dusty Stevens]

Also what cutting oil do you like?

 

[wk4036]

Also what cutting oil do you like?

Yep another can of worms

 

[1911nut]

Here’s something from Calfee-

Hob Finish Chamber

Hi Bill In another post you said "So not only is that fine Lilja taper lapped, it has a full on hob finished chamber" I think of a Hob cutting action such as that used to cut a key-way or a spline. Are you able to describe to me how this works for a chamber, Regards Graham

www.wwaccuracy.com

 

[wk4036]

Here’s something from Calfee-

Hob Finish Chamber

Hi Bill In another post you said "So not only is that fine Lilja taper lapped, it has a full on hob finished chamber" I think of a Hob cutting action such as that used to cut a key-way or a spline. Are you able to describe to me how this works for a chamber, Regards Graham

www.wwaccuracy.com

That is a pretty good explanation and will give most a good idea how it's done, thanks for sharing.

 

[Tony K Harper]

Also what cutting oil do you like?

Dusty,

If you asked 5 guys what they use, you may get 5 different answers. Many use Tap Magic, Viper's Venom, or just plain lard.

I've used several brands and don't have a favorite. Since I have a large supply of Viper's Venom, I've been using it.

As far as finishing a chamber there has much written about it. If you search a little you will come up with enough info to be confused.

If you think about it, all you are trying to do is, make the chamber smooth, easy to load a round into without scraping the wax off and ensuring the leade (transition) is smooth and even all the way around with no fraze or burs. Really doesn't matter what you use as long as you accomplish this. As I mentioned shooting enough rounds will normally get this done but it will take time and ammo.

Many chambers have been ruined by not seasoning them properly. If you don't remove the carbon build up from a new chamber often the leade may wear unequally. Once this happens the barrel has lost some of its potential.

TKH (4628)

 

[wk4036]

Dusty,

If you asked 5 guys what they use, you may get 5 different answers. Many use Tap Magic, Viper's Venom, or like just plain lard.

I've used several brands and don't have a favorite. Since I have a large supply of Viper's Venom, I've been using it.

As far as finishing a chamber there has much written about it. If you search a little you will come up with enough info to be confused.

If you think about it, all you are trying to do is, make the chamber smooth, easy to load a round into without scraping the wax off and ensuring the leade (transition) is smooth and even all the way around with no fraze or burs. Really doesn't matter what you use as long as you accomplish this. As I mentioned shooting enough rounds will normally get this done but it will take time and ammo.

Many chambers have been ruined by not seasoning them properly. If you don't remove the carbon build up from a new chamber often the leade may wear unequally. Once this happens the barrel has lost some of its potential.

TKH (4628)

I was hoping you would reply as you seem to be a pretty straight shooter with info.

 

[Dusty Stevens]

Yes tony we appreciate all the info you share. Ive had good mentors on the centerfire side but none of them do rimfire. I feel like im on an island with the info i need. You can only learn so much black magic on the innerwebs

 

[epc308]

For what it’s worth-
A guy I worked for built cast bullet rifles almost exclusively. A customer needed a new barrel right before a big competition without the usual break in time. Bc there was nothing to lose, my boss did his usual polish of the chamber, staying out of the rifling. For the leade, it was first an oily patch, then he wrapped the patch with oiled 4-0 steel wool. Worked it back and forth in the lead to remove the fuzz. Turned out to work well with no scratches that he could see through his Hawkeye bore scope.
What’s a 22 but a cast bullet gun? I’ve since tried it on my own stuff to experiment, it definitely didn’t hurt, didn’t lead the leade either, as some new 22s do.
Oh yeah, the guy finished 2nd that weekend.

 

[skeetlee]

I too have had the fortunate experiences of learning from a fella that really knows how to make these 22 shoot. I dont thinks this is so much a secrete as to what needs done, more so, just hard to explain with words. i hand polish every 22 chamber i cut in my shop. i could tell you how and with what but without being able to show you were and how much you could really mess something up.
There are factors to look for after cutting a chamber that tell you as the smith what needs to be done. Speeds and feed rates play a large roll. cutting oil is always a concern, and then there is bullet jam. How far or deep do you cut the chamber? what ammo is going to be used? what type of rifling is in the barrel? alll factors that play into the decision and steps taken. If your close to central Illinois, your welcome to come to my shop. Ill show you everything i know, well most anyway If one thinks he knows everything there is to know about chambering 22 barrels then he is a fool. Always learning and perfecting.
Lee Gardner Precision