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Rifles, Reloading, Optics, Equipment
Reloading
243 win with hornady 95gn sst
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<blockquote data-quote="Shootin4fun" data-source="post: 813997" data-attributes="member: 28741"><p>Okay so I tested those IMR 4831 loads to see if I could get the speed up and keep accuracy and I was very surprised. I 5 each in .3 increments. It got interesting at the max loads listed in Hogdon's various manuals, 43.0gr, though I have older manuals that go up to 44.0 gr on a 100 gr bullet. Here's the average of each 5 shot string I chronographed with a ProChrono</p><p> </p><p>42.7 gr = 3055 fps</p><p>43.0 gr = 3037 ??</p><p>43.3 gr = 3079</p><p>43.6 = 3139</p><p>43.9 = 3142 </p><p></p><p></p><p>All except 43.6 turned in pretty good groups- 3 of the 5 touching. But the hottest load going out at 3142 ES 38 SD 14 might have been the tightest</p><p>No dramatic pressure signs...the primers are flattened but not cratered or blown. (Heck, my primers are flattened (tho a little less) in this gun with a mild Varget + 85gr HPBT load. ) There are no brass issues that I can detect. </p><p></p><p>This is out of a 22" barrel. I don't usually see velocities of a 100gr up there in the 3100+ range. Does anyone else see those speeds with their 243 and 95 or 100 gr bullets? Given no stress signs on the case, is this dangerous??</p></blockquote><p></p>
[QUOTE="Shootin4fun, post: 813997, member: 28741"] Okay so I tested those IMR 4831 loads to see if I could get the speed up and keep accuracy and I was very surprised. I 5 each in .3 increments. It got interesting at the max loads listed in Hogdon's various manuals, 43.0gr, though I have older manuals that go up to 44.0 gr on a 100 gr bullet. Here's the average of each 5 shot string I chronographed with a ProChrono 42.7 gr = 3055 fps 43.0 gr = 3037 ?? 43.3 gr = 3079 43.6 = 3139 43.9 = 3142 All except 43.6 turned in pretty good groups- 3 of the 5 touching. But the hottest load going out at 3142 ES 38 SD 14 might have been the tightest No dramatic pressure signs...the primers are flattened but not cratered or blown. (Heck, my primers are flattened (tho a little less) in this gun with a mild Varget + 85gr HPBT load. ) There are no brass issues that I can detect. This is out of a 22" barrel. I don't usually see velocities of a 100gr up there in the 3100+ range. Does anyone else see those speeds with their 243 and 95 or 100 gr bullets? Given no stress signs on the case, is this dangerous?? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
243 win with hornady 95gn sst
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