Has anyone seen a velocity gain after treating a barrel with DBC. Just chrono'ed some loads in 300WM that seems to be a little hotter overall that before the DBC treatment - a little over 100fps difference. I initially thought it might be temp related, but it was in the 40's this range session, vs. in the 80's before the DBC treatment. Same brass, powder charge, bullet - everything was the same except DBC (and the range temp).
Any thoughts?
