I did some final development for my 220 grain hornady eld-x load today. I was playing around with the seating depth and I think I found the sweet spot for my rifle right at 3.425 C.O.A.L. I ran the test with 2 different charges of rl22. One at 65 grains and one at 69 grains to test if the powder charge was really effecting accuracy that much. My initial groups where right at one inch with 69 grains but same hole with 65 grains. After playing with the seating depth I was able to get a ragged hole 5 shot group at 100 yards with one flyer that I knew I pulled using the 69 grain load. No pressure signs on the case. Overall I'm pretty happy with how it turned out, once it warms up a bit I'll take this load out to some distance.
Load data:
Hornady case with 5 firings
Federal 215 magnum primer
69 grains of rl22
220 grain eld-x
Test rifle:
Tikka t3x with a custom 26 inch heavy Palma barrel 1-8 twist mounted in a oryx chassis with a sig tango 4 6-24x50mm on top
Chrono readings for the 69 grain load at 3.425" coal
1. 2778 fps
2. 2801 fps
3. 2795 fps
4. 2822 fps
5. 2815 fps
Good stuff!!