So I went back to the range yesterday to see if my best group would repeat and to try more 52 gr loads with .010 freebore.
Well the 68 gr loads started with a .451" group then jumped to 1.189" group then it settled down and the next 3 groups were between .303"- .331" Pretty happy with that.
I cleaned the rifle then tried the 52 gr loads which were .5 gr different.
A similar thing happened, the first 2 groups were .526" and .884", then the gun settled down and got tighter, the next 3 groups between .231" and .401"
It seems the rifle likes to be warmed up or have a few rounds down the barrel first, and I had fired a couple of factory rounds down the gun before each session. I guess I will load up a bunch of the 52 gr loads that made the .231 group and see if they repeat then deceide between them and the 68 gr loads.
I will then load 100 for my first shoot with all my own gear. Cheers Roscoe