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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New 338 NM Build and Load Work Up Advice
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<blockquote data-quote="JW74" data-source="post: 1701681" data-attributes="member: 81323"><p>I went out yesterday and worked up some more loads. Still working with new un-fired brass at this point and plan to pick up some Peterson brass shorty if available. Based of of my velocities I do think I have a tight barrel that is causing higher velocities and pressure at lower charge weight than most others have been reporting.</p><p></p><p>300 grain Berger Hybrid OTM</p><p>H1000</p><p>Fed 215M</p><p>New un-fired Norma brass</p><p>2.836" to ogive (0.018" jump)</p><p></p><p>1) 85.6 gn @ 2703 fps</p><p>2) 85.9 gn @ 2727 fps (stiff bolt - stopped here with H1000)</p><p></p><p>300 grain Berger Hybrid OTM</p><p>Reloader 33</p><p>Fed 215M</p><p>New un-fired Norma brass</p><p>2.836" to ogive (0.018" jump)</p><p></p><p>Those loads were:</p><p></p><p>1) 95.5 gn @ 2750 fps</p><p>2) 95.9 gn @ 2776 fps</p><p>3) 96.3 gn @ 2779 fps</p><p>4) 96.7 gn @ 2805 fps</p><p>5) 97.1 gn @ 2839 fps</p><p></p><p>No real pressure signs with the Reloader 33 other than the flat primers as mentioned before. The velocity with the RL-33 is great but the accuracy and SD's are better with the H1000. I will try some of these loads with once fired brass and also with Peterson and/or Lapua brass and see what happens. For now I may settle on 85.6 gn of H1000 @ ~2700 fps and begin working on loads with the Hornady 285grain ELD.</p></blockquote><p></p>
[QUOTE="JW74, post: 1701681, member: 81323"] I went out yesterday and worked up some more loads. Still working with new un-fired brass at this point and plan to pick up some Peterson brass shorty if available. Based of of my velocities I do think I have a tight barrel that is causing higher velocities and pressure at lower charge weight than most others have been reporting. 300 grain Berger Hybrid OTM H1000 Fed 215M New un-fired Norma brass 2.836” to ogive (0.018” jump) 1) 85.6 gn @ 2703 fps 2) 85.9 gn @ 2727 fps (stiff bolt - stopped here with H1000) 300 grain Berger Hybrid OTM Reloader 33 Fed 215M New un-fired Norma brass 2.836” to ogive (0.018” jump) Those loads were: 1) 95.5 gn @ 2750 fps 2) 95.9 gn @ 2776 fps 3) 96.3 gn @ 2779 fps 4) 96.7 gn @ 2805 fps 5) 97.1 gn @ 2839 fps No real pressure signs with the Reloader 33 other than the flat primers as mentioned before. The velocity with the RL-33 is great but the accuracy and SD's are better with the H1000. I will try some of these loads with once fired brass and also with Peterson and/or Lapua brass and see what happens. For now I may settle on 85.6 gn of H1000 @ ~2700 fps and begin working on loads with the Hornady 285grain ELD. [/QUOTE]
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New 338 NM Build and Load Work Up Advice
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