I have. Renegade with a PRB. :cool2:

My old ThunderHawk 54 has almost no crud ring with reduced loads of T7. I say reduced because the twist is too fast for a hotter load. Last time out i loaded at least 5-6 shots with a wad then a PRB and never really felt the ring. This gun did have many years of use with BB though with Maxis plus a little BB on a felt wad. Iim really starting to think that had an effect.

The last outing was also with the 209 conversion and RemSTS and WinT7 primers. Using a cap i doubt there would have been any ring for many more shots.

I was shooting PRB's with 50gr and 35gr 2F Goex in my GPH with a 1/32 twist. I bet you would get same type of results.

Semi, before anyone replied to my 11's comment, somehow i knew that you would know what it meant :wave:. Ray

I don't know if the SD air has anything to do with it. I live in the humid TN heat and I don't get it. Heck, I even use Rem Oil which has teflon in it which some people say causes it. Still none for me. :confused0024:

The ignition may have a lot to do with it, I have never heard of any one getting crud-ring with # 11 caps. I also don't know of any one that is able to use PRB with out using a wad to keep from blowing the patch.