48-4 Sticky Extraction

[45NUTT]

Took my 48-4 to the range and it shot well although I only ran about 40 rounds through it. I hit it with some Remoil prior to heading out but did not run a patch through the cylinders.

Extraction of the spent cases was harder than it should have been. I know my Pre 17 works better clean because of the close tolerances and I assume this 48 is the same way.

Thoughts other than to run a brush through the cylinders while shooting?

 

[gwpercle]

Check the chambers for any / all "roughness" .
You may want to polish the chambers for easier extraction ...
Baby Butt Smooth cylinders extract the easiest .
Gary

 

[45NUTT]

What / how to polish them?

 

[505Gibbs]

Took my 48-4 to the range and it shot well although I only ran about 40 rounds through it. I hit it with some Remoil prior to heading out but did not run a patch through the cylinders.

Extraction of the spent cases was harder than it should have been. I know my Pre 17 works better clean because of the close tolerances and I assume this 48 is the same way.

Thoughts other than to run a brush through the cylinders while shooting?

If the extraction became more difficult as the round count increased it might be the Rem oil? The cylinders should start dry - IMO.

 

[stansdds]

S&W's rimfire revolvers are known for having very tight chambers, so any amount of fouling or oil can cause difficult extraction. Sometimes it can even be the brand of ammo that causes sticky extraction.

 

[45NUTT]

Okay I'll make sure everything's dry and clean next time

 

[505Gibbs]

S&W's rimfire revolvers are known for having very tight chambers, so any amount of fouling or oil can cause difficult extraction. Sometimes it can even be the brand of ammo that causes sticky extraction.

I don't disagree BUT the sticky or difficult usually appears in this forum in the 22LR as opposed to the 22RFM -IMO.

 

[NYlakesider]

I don't disagree BUT the sticky or difficult usually appears in this forum in the 22LR as opposed to the 22RFM -IMO.

Not arguing but there are a lot more .22LRs than RFM guns!

 

[45NUTT]

I'm shooting the 40 grain CCI Maxi Max at 1875 FPS

 

[armadillo]

I had that problem with my M-51. I tried all kinds of different ammo and cleaning methods but couldn't extract the cases without a hammer handle.

I finally resorted to asking my gunsmith to use a 22 Mag reamer on the chambers. Each chamber had a very hard accumulation of metal at the front. Once that was reamed out all the ammo extracted normally.

We both wondered if possibly a previous owner had shot a lot of 22 LR ammo through it. Who knows.

 

[gwpercle]

What / how to polish them?

My DIY method ... wrap a bore brush with thin layer of 0000 steel or copper wool , for a snug fit in the chamber .
Smear J-B Bore Cleaning Compound on the steel wool ...
I use a short cleaning rod and turn it by hand ... to avoid doing any damage (power drills and Dremel tools can get away from you . I turn the brush / wool / j-b compound polisher untill I get tired or I feel no more polishing going on ...
When everything looks all smooth and slicked up baby butt smooth , move on to the next chamber . After doing them all to the same level of smoothness ...you done !
Clean and lube ... then Choot 'Em !
S$W 22LR revolver chambers are cut tight ... mine will not chamber some brands of ammo easily (Winchester Super-X) so a little polishing will help . Any fine polishing paste can be used ...I like J-B Bore Compound because it's made for firearms and a great cleaner .
Gary