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Rifles, Reloading, Optics, Equipment
Reloading
168 bergers in 7mm mag
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<blockquote data-quote="Fitch" data-source="post: 375980" data-attributes="member: 19372"><p>Thankyouverymuch! </p><p> </p><p>I'll load some of those as the max in a work up from about 1.5g low - I happen to have some of that powder. That looks like a very good load. Models at 3012 fps in the Ruger's 24" barrel, 57,861 psi. A guy can shoot a load like that all day, not hurt anything, and put the meat in the freezer. </p><p> </p><p>The ballistics look good for that bullet as well. +/- 3" PBR of 303 yards (using the G1 BC) when sighted in at 258 yards (2.3" high at 200). Sighted in at 200 yards, the VX-II with hold over dots would have dots at 309 yards, 419 yards, and 532 yards. I can work with that.</p><p> </p><p>QuickLOAD frequently does a good job 2with IMR powders, espeicallly in large cases (.308 size and up).</p><p> </p><p></p><p> </p><p>If I set the temperature to 45F in QL the SSC load models at 2998 fps. The two 7828 loads model at 3009 and 2986 respectively with the temperature set to 32F. They are all within 2.5% which is pretty good for an internal ballistic model. </p><p> </p><p></p><p> </p><p>QuickLOAD doesn't model RL25 as accurately as it does 7828. It predicts 3000 fps at a very reasonable 55,580 psi for the 70.8g load - that's still within 5% on MV (4.3%) but it's a good example of why one backs off 10% and works up using the chronograph to make sure nothing is off the reservation. </p><p> </p><p>Thank you very much for the range data. Much appreciated.</p><p> </p><p>I'm going to go to the reloading bench a few feet behind me and load up some 7828SSC loads to see how they do.</p><p> </p><p>Fitch</p></blockquote><p></p>
[QUOTE="Fitch, post: 375980, member: 19372"] Thankyouverymuch! I'll load some of those as the max in a work up from about 1.5g low - I happen to have some of that powder. That looks like a very good load. Models at 3012 fps in the Ruger's 24" barrel, 57,861 psi. A guy can shoot a load like that all day, not hurt anything, and put the meat in the freezer. The ballistics look good for that bullet as well. +/- 3" PBR of 303 yards (using the G1 BC) when sighted in at 258 yards (2.3" high at 200). Sighted in at 200 yards, the VX-II with hold over dots would have dots at 309 yards, 419 yards, and 532 yards. I can work with that. QuickLOAD frequently does a good job 2with IMR powders, espeicallly in large cases (.308 size and up). If I set the temperature to 45F in QL the SSC load models at 2998 fps. The two 7828 loads model at 3009 and 2986 respectively with the temperature set to 32F. They are all within 2.5% which is pretty good for an internal ballistic model. QuickLOAD doesn't model RL25 as accurately as it does 7828. It predicts 3000 fps at a very reasonable 55,580 psi for the 70.8g load - that's still within 5% on MV (4.3%) but it's a good example of why one backs off 10% and works up using the chronograph to make sure nothing is off the reservation. Thank you very much for the range data. Much appreciated. I'm going to go to the reloading bench a few feet behind me and load up some 7828SSC loads to see how they do. Fitch [/QUOTE]
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Reloading
168 bergers in 7mm mag
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