Magnumite
Ultimate Member
So, I'm curious about how its suggested to run higher with W231 and a lower velocity is working well with Bullseye. I"m willing to go back up to try heavier loads but I"m just curious about it.
When I ran 5.6 W231 with the Copper washed bullets I noticed muzzle blast from the compensator. I was curious cause I would think powder burning past the muzzle would create variability, No?
I have enough Powder coated SWC to try some various loads of W231 as well as load up a box or two with the 4.0 Bullseye.
John mentioned the nitro in the Bullseye. This would be a double base powder. When the powder burns it does so quickly. This builds pressure fast which pushes the bullet metal at the base of the bullet into tight contact with the case then the bore, more effectively sealing the bore. This is a phenomenon known as obturation. It also swells the case walls more tightly against the chamber wall (dependent on chamber size). This prevents flame cutting and powder erosion along the sides of the bullet.
This essentially was that first big lesson in reloading I mentioned. Light charges of Green Dot even with a soft swaged dished based bullet was a disaster for accuracy. I used Bullseye the next time around and the groups reduced to 1/3 the size of the Green Dot loads with that same bullet.