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Trying to work up a 95gr vmax load in my 6.5 Creedmoor. Started with 38gr of Ar2206H. Brass is Hornady which has been full length sized and tumbled clean in stainless steel pin media tumbler so we're nice and shiny.
I fire 3 round at 38gr ar2206H and noticed abit of soot going back past the shoulder. Which I don't normally see... read that problem might be that powder might be a bit slow.
Tried Benchmark 8208 at 38.5gr and first case looked normal. Second case had a bit of carbon soot going back the length of case and even a bit of carbon around rim? 3rd case had a bit of carbon back past the shoulder like the AR2206H loads.
Thinking I'll try increasing the loads abit and maybe the problem will go away one brass is fire formed?
Maybe the Lee Full length die has undersized the cases???
Dunno?
Happy for any input. Thanks