"I use Breakfree CLP as my bore protectant, maybe that has something with do with it?"
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Crud rings and Clod clumps!
If you're using Breakfree CLP as a rifle-storing bore protectant with sidelocks, be sure to store your rifle with the rifle upside down or remove the nipple & cleanout screw first when using 777 FF powder. My two Traditions sidelocks have (2) ninety degree turns in the flash channel & CLP remnants in combination with 777 powder fouling will create hang/misfires if your patches are wet instead of damp.
I purposely bought the spray can of Breakfree to avoid over-use on a patch, but the nozzle spray pattern comes out in a narrow, heavy pattern. I then stuck the entire "pressed" nozzle in an empty spray bottle to create a wide, thin spray pattern.
Then I took Randy's "soft fouling" theory to the next level. I figured since Lehigh Valley Lube worked good in the dual role of a bore protectant and Lehigh Spit Patch, I will try CLP as a bore swab every 2nd shot. Ouch! No fire again.
So in retrospect, Breakfree works well with inlines even with a moderate dose as a protectant and light dose as a bore swab.... but not with Traditions side-hammers. 777 fouling with CLP may alleviate crud rings with most inlines ... but 777 fouling with CLP forms clod clumps that block the firing channels in some sidelocks.