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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
338 SHERMAN MAX
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<blockquote data-quote="DBoone" data-source="post: 2100289" data-attributes="member: 104920"><p>Well I'm getting close to sending Idaho Trecker some final numbers with the Berger 250. My load of 68.6gr H100V was below .8moa (0.010" jump) and with a change to seating depth got it down below .5moa (0.130" jump). Now that the paper is telling me I've got some accuracy, I'll throw the magneto back on and get some numbers. I think it will be around 2800fps. I'll try longer distances too, everything to date has been at 100 yards. </p><p></p><p>Now for the 300 grain Berger info. These without a doubt hit the shoulder harder.</p><p></p><p>COAL ~3.190"</p><p>BTO 2.339" (0.010" jump)</p><p>Reloder 26 - FPS</p><p>66.0 - 2508</p><p>66.5 - 2521</p><p>67.0 - 2529</p><p>67.5 - 2541</p><p>68.0 - 2559</p><p>68.5 - 2600</p><p>69.0 - 2602</p><p>69.5 - 2628</p><p>70.0 - 2640</p><p>70.5 - 2672 (minor bolt lift and stopped)</p><p></p><p>I'll have to run the ballistic numbers and see if this is worth continuing with. It looked like 2520ish might have accuracy potential and 2630ish, though I'd feel more comfortable at the 2600 range.</p><p></p><p>No real progress with the Lazer's today, tried one group with a load at 69.3 of H110v and it's going to need more work.</p><p></p><p>Hope my info helps others and I'll throw out the usual disclaimer to start low with your own rifle and work up. </p><p></p><p>Dan</p></blockquote><p></p>
[QUOTE="DBoone, post: 2100289, member: 104920"] Well I'm getting close to sending Idaho Trecker some final numbers with the Berger 250. My load of 68.6gr H100V was below .8moa (0.010" jump) and with a change to seating depth got it down below .5moa (0.130" jump). Now that the paper is telling me I've got some accuracy, I'll throw the magneto back on and get some numbers. I think it will be around 2800fps. I'll try longer distances too, everything to date has been at 100 yards. Now for the 300 grain Berger info. These without a doubt hit the shoulder harder. COAL ~3.190" BTO 2.339" (0.010" jump) Reloder 26 - FPS 66.0 - 2508 66.5 - 2521 67.0 - 2529 67.5 - 2541 68.0 - 2559 68.5 - 2600 69.0 - 2602 69.5 - 2628 70.0 - 2640 70.5 - 2672 (minor bolt lift and stopped) I'll have to run the ballistic numbers and see if this is worth continuing with. It looked like 2520ish might have accuracy potential and 2630ish, though I'd feel more comfortable at the 2600 range. No real progress with the Lazer's today, tried one group with a load at 69.3 of H110v and it's going to need more work. Hope my info helps others and I'll throw out the usual disclaimer to start low with your own rifle and work up. Dan [/QUOTE]
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338 SHERMAN MAX
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