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Rifles, Reloading, Optics, Equipment
Reloading
Pressure issues reloading for Christensen
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<blockquote data-quote="Accuracyman" data-source="post: 1991337" data-attributes="member: 112298"><p>Sorry to hear about your problems. I can share my load data and chronograph readings at different charges on my hunting 6.5-284 so you have a comparison. <strong>As always these are loads shot in my rifle and found to be safe. Please work up based upon your own rifle and pressure signs.</strong></p><p></p><p>Rifle chambered with a JGS reamer in 6.5-284 with a .297 neck and .188 freebore</p><p>Barrel is a 3B Bartlein 8 twist 5R cut at 24"(Might be 25" I'll check after work)</p><p>Lapua brass with a loaded round measuring .294" (I do neck turn just enough to true them)</p><p>CCI 250 primers</p><p>H4831SC powder</p><p>Hornady 143g ELD-X bullets seated at 2.489" on a Stoney Point gauge (Hornady now).</p><p>The cartridge overall length is 3.125"</p><p>That equates to a .020" jump from a touch point that was found using a fired case modified to fit the Stoney Point tool.</p><p>Redding competition dies with a .291 bushing (.003" under loaded round)</p><p></p><p>Charge Muzzle Velocity (LabRadar)</p><p>50.8g 2810 fps</p><p>51.0g 2823 fps</p><p>51.3g 2853 fps</p><p>51.6g 2870 fps</p><p>51.9g 2902 fps</p><p>52.2g 2908 fps</p><p></p><p>I started to get a slightly tight bolt with no ejector mark at 52.2g so I stopped there. My rifle really liked 51.3g and 51.6g. Both were sub 1/2 MOA with 51.3g under 1/4 MOA. I have not shot this load any further than 300 yards so I cannot answer performance questions beyond that yardage. I wanted to give you actual hunting rifle speeds so you can compare your results.</p><p></p><p>I have not tried other powders because I am more concerned with accuracy and temperature stability in my hunting rifles than muzzle velocity. I can always click up a bit more to compensate for velocity.</p><p></p><p>Kris</p></blockquote><p></p>
[QUOTE="Accuracyman, post: 1991337, member: 112298"] Sorry to hear about your problems. I can share my load data and chronograph readings at different charges on my hunting 6.5-284 so you have a comparison. [B]As always these are loads shot in my rifle and found to be safe. Please work up based upon your own rifle and pressure signs.[/B] Rifle chambered with a JGS reamer in 6.5-284 with a .297 neck and .188 freebore Barrel is a 3B Bartlein 8 twist 5R cut at 24"(Might be 25" I'll check after work) Lapua brass with a loaded round measuring .294" (I do neck turn just enough to true them) CCI 250 primers H4831SC powder Hornady 143g ELD-X bullets seated at 2.489" on a Stoney Point gauge (Hornady now). The cartridge overall length is 3.125" That equates to a .020" jump from a touch point that was found using a fired case modified to fit the Stoney Point tool. Redding competition dies with a .291 bushing (.003" under loaded round) Charge Muzzle Velocity (LabRadar) 50.8g 2810 fps 51.0g 2823 fps 51.3g 2853 fps 51.6g 2870 fps 51.9g 2902 fps 52.2g 2908 fps I started to get a slightly tight bolt with no ejector mark at 52.2g so I stopped there. My rifle really liked 51.3g and 51.6g. Both were sub 1/2 MOA with 51.3g under 1/4 MOA. I have not shot this load any further than 300 yards so I cannot answer performance questions beyond that yardage. I wanted to give you actual hunting rifle speeds so you can compare your results. I have not tried other powders because I am more concerned with accuracy and temperature stability in my hunting rifles than muzzle velocity. I can always click up a bit more to compensate for velocity. Kris [/QUOTE]
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Pressure issues reloading for Christensen
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