I'm relatively new to reloading and I've been learning and doing it with a friend and I (we) have succeeded in creating some very accurate loads for my 6.5x55. However, after firing my cases are becoming black and sooty looking - this blackening is along the full length of the fired case and there is a little on the bolt face. Has anyone experienced this before, and if so, what was the cause and solution?
My current reloads are new, unfired Lapua brass, Viht 160 43.5gr, CCI BR-2 primers and Nosler 120gr BT. My powder is well below the maximum load as stated in my Nosler reloading manual and the blackening happened on all my trail loads too! OAL does not exceed the recommended length and my final load produces 3 shots in nearly the same hole so accuracy is great - I have had no issues with previous factory ammunition.
I gave my chamber a real good clean out last week and my two shots this evening (producing 2 dead Munites) are much cleaner than before. At the end of the day, I can cope with cleaning dirty brass, I just down want there to be any detrimental affects on my rifle.
Can an any of you reloading gurus shed some light?