Anyone try to remove barrel choke in a revolver?

[Outpost75]

Once barrel has been removed, most of the stress is relieved, but some constriction remains. The barrel can then be lapped to remove the remaining choke. The barrel threads may need to be chased to permit turning the barrel up mostly by hand except for the last 5 degrees or so before final sight alignment. Use "service removable" Loctite 242 as a thread lubricant and sealer during reassembly, so that excessive barrel torque is not needed to keep the barrel tight. Remington uses the same product in asembling barrels on their 700 bolt action rifles.

https://www.loctiteproducts.com/en/p...erblue242.html

Loctite Threadlocker Blue 242 is designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools.

The product cures when confined in the absence of air between close fitting metal surfaces. It protects threads from rust and corrosion and prevents loosening from shock and vibration. Loctite® Threadlocker Blue 242 is particularly suited for applications on less active substrates such as stainless steel and plated surfaces, where disassembly is required for servicing.

Prevents rusting of threads
Can be removed with hand tools
Prevents loosening of metal fasteners caused by vibrations
Protects threads
Medium strength
Locks threads

[arlon]

Thanks for all the thoughts. I'm leaning towards some sort of hand lapping with a slug of soft lead. I just think this Ruger would shoot a lot better if this issue was fixed. It also had t cylinder bores that were a lot tighter than the others, evened all of those out. Gun was made in 1985 but as new when I got it last year. Certainly don't want to send it back to Ruger, no telling what would happen.

[Petander]

Outpost75,thank you very much again.

I'm familiar with both blue and red Loctite.

[Outpost75]

Outpost75,thank you very much again.

I'm familiar with both blue and red Loctite.

If you clean the barrel threads and the threads in the frame very well, see how easily the barrel turns on by hand. You might not need to chase the threads and get lucky, which would be very nice!

[John Taylor]

I do quite a few liners on old guns and find that several will have barrels that don't come up tight, blue Loctite fixes the problem. Had a Ruger come in several years back that the customer said the screws kept coming loose so he used red Loctite. I could not get it apart so I could not do any repairs without breaking something first. The grip screw would not come out because the nut side was spinning in the wood.

[oconeedan]

Make sure you also check the throats of each chamber in the cylinder.

[PBSmith]

Is there a critical date/period before which thread choke was NOT a problem with S&W?

Do Colt revolvers sometimes have the same problem?

[Outpost75]

Is there a critical date/period before which thread choke was NOT a problem with S&W?

Do Colt revolvers sometimes have the same problem?

My pre-1970 S&Ws do not have this problem, nor do my Colts of that era and earlier.

[Tracy]

I have a GP100 that had a noticeable constriction. I've been firing full power jacketed bullet loads through it in hopes that it will help to polish it out. Seems to be working. When I first got it, leading was an issue with any type of cast bullet loads. After a few hundred jacketed bullets, that has improved.