I loaded up some 190gr Bergers for my Remington 700 300 win mag with H1000 powder. Per the recommendations in an article on this site I loaded 4 different seating depths ranging from 0.010" to 0.130" and shot two groups of three of each depth. The article said that one depth would group better than the others. What I found instead is one depth grouped poorly and the other three were somewhat close. I shot in round robin fashion and here are the results:
Depth 0.010"
Group1 = 0.79"
Group2 = 1.51"
Ave = 1.15"
Depth 0.050"
Group1 = 0.98"
Group2 = 0.99"
Ave = 0.99"
Depth 0.090"
Group1 = 0.68"
Group2 = 1.20"
Ave = 0.94"
Depth 0.130"
Group 1 = 2.12"
Group 2 = 1.60"
Ave = 1.86"
There was some inconsistency between my first and second rounds, as you can see (could have been barrel heat, or me?). It appears that the 2nd and 3rd depths were close on average, but one turned in a better group and the other was more consistent (or I was more consistent).
Given this data, what would your next move be? Would you duplicate the 2nd and 3rd depths again and another one or two in between and give it another go? Or would you pick one of the above and run with it.
Part of my dilema is the fact that I'm running out of time between now and hunting season. I still need to tweak powder charge, as these were loaded near the min loads.
Looking for recommendations to get me to a reasonably optimized load in the most efficient manner possible.
Thanks.
Depth 0.010"
Group1 = 0.79"
Group2 = 1.51"
Ave = 1.15"
Depth 0.050"
Group1 = 0.98"
Group2 = 0.99"
Ave = 0.99"
Depth 0.090"
Group1 = 0.68"
Group2 = 1.20"
Ave = 0.94"
Depth 0.130"
Group 1 = 2.12"
Group 2 = 1.60"
Ave = 1.86"
There was some inconsistency between my first and second rounds, as you can see (could have been barrel heat, or me?). It appears that the 2nd and 3rd depths were close on average, but one turned in a better group and the other was more consistent (or I was more consistent).
Given this data, what would your next move be? Would you duplicate the 2nd and 3rd depths again and another one or two in between and give it another go? Or would you pick one of the above and run with it.
Part of my dilema is the fact that I'm running out of time between now and hunting season. I still need to tweak powder charge, as these were loaded near the min loads.
Looking for recommendations to get me to a reasonably optimized load in the most efficient manner possible.
Thanks.