I have this problem, maybe someone like Rcmodel or Oldfuff can help me. I have a 357 mag which everybody knows you can fire 38 specials out of so I fired a box of 38s out of it followed by a box of 357s. The result was a ring of fouling in the chambers just beyond where the 38 cases end that is so hard that no regular solvent or even solvent for lead and copper removal can cut. I have even tried a 45 brush to see if the increse in pressure that it would supply might help.
Any ideas would be appreciated. Thanks
Any ideas would be appreciated. Thanks