Shot case very sooty

joncarnage

Well-Known Member
I have 6.5x55 and I've shot 100+ of this round same brass, heads, grains etc so changed nothing and it's just started to get very sooty around the spent case. I cleaned the rifle barrel and the chamber but this hasn't improved the situation. Aim and velocity are just the same, any ideas?

Jon
 
I've had this very same problem on my 6.5x55 and will be updating my main post tomorrow.

Are you full length resizing or neck sizing as I found the problem happened mostly on the full length resized cases that I tested yesterday.
Also how many times have you loaded the cases as the necks may need annealing
 
Just neck sizing so tried full length again no change i.e. No worse or better? Cases been loaded about 6 times, lapua cases
 
Anneal the cases. The problem is the brass is not sealing in the chamber as the neck/shoulder area of brass has lost its elasticity. Annealing should cure the problem, then F/L resize to correct headspace dimensions. Re-anneal approx 3-4 firings. The brass should then last for a considerable time.
 
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