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Rifles, Reloading, Optics, Equipment
Reloading
Absolute Hammer load data
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<blockquote data-quote="Grifm" data-source="post: 2051944" data-attributes="member: 116508"><p>Went back to the range today to try Hodgdon Benchmark with 151 AH. Loaded up 1 round each in 0.5 gr steps from 42-48 gr. Brass was sized with Redding dies with expander removed. Measured 0.006 neck tension. Temperature was 48 deg. Velocity recorded on CD ProCronoDLX.</p><p></p><p>Start Low and work up on charge weight!</p><p></p><p>Winchester M70 FTW SS - 308Win</p><p>22in Factory 1in12 twist</p><p>Lapua Brass - Trimmed 2.006</p><p>Fed 215</p><p>COAL - 2.863</p><p></p><p>42.0 - 2688</p><p>42.5 - 2735</p><p>43.0 - 2734</p><p>43.5 - 2804</p><p>44.0 - 2824</p><p>44.5 - 2836</p><p>45.0 - 2875</p><p>45.5 - 2893</p><p>46.0 - 2922</p><p>46.5 - 2983</p><p>47.0 - 2999</p><p>47.5 - 3004</p><p>48.0 - 3034 bolt was slightly stiffer. No ejector mark</p><p></p><p>Not really sure where to go from here. I probably won't try higher charges with benchmark, I don't think I'm far from more significant pressure signs and 48.0 was more compressed than where I stopped with the 8208. I could either go a bit faster stick powder maybe H322, go with a slower ball powder (Ramshot TAC) and see if I can get a higher charge in the case, or leave well enough alone and see what a charge in the around 47.3 groups like. I was hoping to be able to get at or right above 3100FPS, which would be 200fps faster then my current load (150gr TTSX/CFE223) going 2900FPS and 3/4 MOA, assuming the AH groups the same that is 100FPS faster, maybe I am just being greedy.</p></blockquote><p></p>
[QUOTE="Grifm, post: 2051944, member: 116508"] Went back to the range today to try Hodgdon Benchmark with 151 AH. Loaded up 1 round each in 0.5 gr steps from 42-48 gr. Brass was sized with Redding dies with expander removed. Measured 0.006 neck tension. Temperature was 48 deg. Velocity recorded on CD ProCronoDLX. Start Low and work up on charge weight! Winchester M70 FTW SS - 308Win 22in Factory 1in12 twist Lapua Brass - Trimmed 2.006 Fed 215 COAL - 2.863 42.0 - 2688 42.5 - 2735 43.0 - 2734 43.5 - 2804 44.0 - 2824 44.5 - 2836 45.0 - 2875 45.5 - 2893 46.0 - 2922 46.5 - 2983 47.0 - 2999 47.5 - 3004 48.0 - 3034 bolt was slightly stiffer. No ejector mark Not really sure where to go from here. I probably won't try higher charges with benchmark, I don't think I'm far from more significant pressure signs and 48.0 was more compressed than where I stopped with the 8208. I could either go a bit faster stick powder maybe H322, go with a slower ball powder (Ramshot TAC) and see if I can get a higher charge in the case, or leave well enough alone and see what a charge in the around 47.3 groups like. I was hoping to be able to get at or right above 3100FPS, which would be 200fps faster then my current load (150gr TTSX/CFE223) going 2900FPS and 3/4 MOA, assuming the AH groups the same that is 100FPS faster, maybe I am just being greedy. [/QUOTE]
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Absolute Hammer load data
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