The following is my ladder test results for 110BA 300Win Magnum, Hornady 208 ELD Match bullets and Hodgdon H1000 powder. Cases: Remington, flash holes de-burred & uniformed, primer pockets uniformed, necks reamed, full length sized to fit rifle chamber, trimmed to 2.609 inches, necks turned to 0.016 inches wall thickness and chamferred. Average unprimed case weight, 236.8 grains. Primers: CCI #34. All 20 Hornady 208 ELD-M bullets weighed 208.0 grains, Ogive averaged 0.7997 inches. Seated to 0.020 inches off lands as recommended by Hornady. Hornady does not list H1000 for ELD Match bullets. Hornady recommended using their charges for 212 ELD-X bullets, 65.3 grains @ 2400 FPS to 77.6 grains @ 2800 FPS. Hodgdon’s website, for 208 AMAX, lists 71.7 grains @ 2650 FPS to 78.0 grains compressed @ 2869 FPS. Starting at Hodgdon’s minimum 71.7 grains and stopping at Hornady maximum 77.6 grains for 212 ELD-X bullets. Increments of 0.3 grains. Target was at 200 yards, 19 degrees and sunny across a flat bean field. Labradar used to collect velocities. OF COURSE after getting all the equipment set up a terrible varying cross wind picked up and showed no sign of slowing down. Anyway, here are the results:
Cartridge Grains FPS Notes 21 71.70 2653 22 72.00 2758 23 72.30 2764 24 72.60 2790 25 72.90 2821 26 73.30 2814 27 73.60 2822 28 73.90 2847 29 74.20 2857 30 74.50 2862 31 74.80 2878 32 75.10 2898 33 75.40 2898 Primer pushed out .0035 34 75.70 2909 Primer pushed out .0015 35 76.10 2948 Primer pushed out .0015 36 76.40 2949 Primer pushed out .002 37 76.70 2968 Primer pushed out .0025 38 77.00 2985 Primer pushed out .003 39 77.30 2987 Primer pushed out .002 40 77.60 3003 Primer pushed out .002
Grid lines are 1/4 inch. I used colored permanent markers on each 5 round group for identification between groups. Primers did not show signs of flattening, yet pushed out as above. I was surprised at the higher velocities. I was very impressed how clean the fired cartridges were. I plan to perform the test again starting at 72.3 grains and stopping at 75.0 grains and calmer conditions. Any other recommendations?
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