I would recommend magnum primers with W296/H110. In my experience this powder needs magnum primers and a very firm crimp to be consistant.
Don't drop more than about 5% from listed maximums with this powder, and make SURE the bullet you are using is the one used in the data. Different bullets have different cannelure heights and it makes a BIG difference in pressure.
In that M60 be ready for a full on handfull, those loads are going to be unlike anything you have tried before. You will also need to crimp them HARD to keep the bullet pull from locking the gun up.
Good luck and drop us a line with a range report if you would.
|