Se7en,
I might not have been clear sorry. I'm using the new Remingtons and switched back to the Winchesters with almost no improvement in the blowback. . The Remingtons started out great with the new breechplug that T/C installed when I sent my barrel back. For the first 15 -20 shots they where very clean, no blowback on the breech and hardly any on the primer itself. Now with no other changes they are blowing like crazy. I'm getting a massive amount of crud in and around my breech. There was NO changes made to the gun, or load or bullets to make the difference.
I'm going to try cleaning out the fire channel in the breech plug with a drill bit. I've only been cleaning it with solvent and a tooth brush so mabye the channel is plugging up with crud.

I have so much blowback right now that I need to pull the barrel after every shooting session to clean the breech face off. If the acp breech will eliminate the breech cleaning it would be worth the money to me, but if dosn't help or only slightly reduces the problem I will pass.