Thanks Granpamac, as they say "change one thing, change everthing" and start over.
I have quantity of Sako brass which I have been loading since I was a schoolboy for my Gevarm .222, it is significantly heavier than the ex police PMC brass I use for this load or some american commercial brass and will have a smaller internal volume which will raise pressures etc if not compensated for.
The throat in my old Brno fox is till tightt, I load 0.5mm (.020") off the lands at 54mm OAL, the mag wiil allow 55.5mm OAL.
I once shot these at West Melton army range at 300 metres and got an about 75mm group which was better than the 50 grain Sierras did that range as there was a breeze.
The 70 grain also shoot well in my .222 Baikal singleshot which has a 1 in 12" twist.
I hope to shoot these over the Labradar chrono on the next members day at the range.
Dont shoot if you cant see your mate!
Bookmarks