carbon fouling with 6mmbr and 22 br

[lpreddick]

i am shooting the above and am impressed by the accuracy of both...many one hole groups! after cleaning with wet patches l run a bronze brush down the bore and lo and behold...dirty patch! i will spend many minutes repeating the brush until the solvent drips clear and the patch is also clean. i don't have this situation with my other calibers and wonder if there is something about these short cases, powders, pressures,etc. that causes the fouling. i read that the 6ppc shooters are known for their rather vigorous brushing/cleaning often after only a few shots, and possibly reducing the life of their barrel. bore scope owners could offer some insite as to whether some cartridges foul more because of the components involved in their use. thanks.

if i can see you, i cn touch you!

 

[forsyth793]

Is it with one brand or all powders that you use?

 

[NorCalMikie]

Never had a "brush" in any of my 22 or 6BRs. Both still shoot bug holes.

 

[7mm300]

I also never used a brush until about 600 rnds high psi signs started showing up. I always cleaned after matches with solvents and patches. It took forever to get the carbon out and now back to normal with original loads. I load the basic varget ld with 105's.
Chuck