S&W Model 48 .22 mag issue

[Sullyman]

I have a S&W Model 48-4 .22 mag. I clean it well, then after 6 rounds the cylinder won't accept cartridges smoothly. They are hard to load. I don't want to force them in so I quit. The cylinders are gunked up with what looks like unburned powder. I clean it and the new shells seat easily. I am using Remington shells. Is it the shells? Any recommendations for a better .22 mag shell that might eliminate this issue? The cylinder locks up well.

Also anyone have info on hand showing the date of mfg. Model 48-4. 96K5XXX

Thanks
Sullyman

 

[rcmodel]

Try CCI.
And Winchester Super-X has always worked well for me in rifles & revolvers for close to 40 years.

I don't know about Remington, as I don't think I have ever bought a box of Remington .22 WMR in my life.

Heres what you might try.
Use a .22 bronze bore brush, Nitro solvent, and a Cordless drill to clean and remove any possible carbon fouling from the chambers.

If that doesn't fix it, it's the Rem ammo.

rc

 

[ElKabong]

I've had a couple 48s and they all were picky
clean it well,maybe even polish the chambers with some flitz
make sure it is bone dry after cleaning, that is the key
even then, you will have to swab it down every 30 or 40 rss

 

[VA27]

Keep a BoreSnake with the gun. When it starts loading hard drag the snake through the chambers.