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Long Range Hunting & Shooting
300 wby vs 300 win mag
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<blockquote data-quote="Hugnot" data-source="post: 2339527" data-attributes="member: 115658"><p>I did carefully select data because I needed to show pressure data & Hodgdon shows pressures.</p><p></p><p>I converted CPU to PSI by::</p><p></p><p>[ATTACH=full]312071[/ATTACH]</p><p></p><p>and - .300WM, trim 2.61</p><p></p><p>[ATTACH=full]312072[/ATTACH]</p><p></p><p>and 300 WBY, trim 2.81</p><p></p><p>[ATTACH=full]312073[/ATTACH]</p><p></p><p>These data shows a close relational difference between the two cartridges - mostly same powders, same bullet & same barrel length. Looking at the data, I see that the .300 WM loses 2-3% velocity over the .300WBY and that is with the shorty, max 3.340 COAL powder capacity challenged .300 WM. Would RL26 give the .300 WBY a bigger boost.</p><p></p><p>Looking at Alliant RL26 data for the .300 WBY & shorty .300 WM - no pressure data. Not that much difference in velocities.</p><p></p><p>[ATTACH=full]312078[/ATTACH]</p><p></p><p></p><p>.300 WM fans might consider giving that round a longer action and greater COAL in the contest with the .300 WBY. My 3.6" WM easily gets 3,100 plus with 178 H ELDM's - real close to published data for .300 WBY. The VihtaVuori site gives the .300WBY about a 200 fps advantage over the shorty, capacity challenged .300WM but with a 1.75 or so longer barrel. I have lots of VN165 & use that in my .300WM with 178's and equal .300 WBY velocities. </p><p></p><p>My paid working experience demanded inclusion of all data & work was subjected to intensive review, loose stuff would get me yelled at or worse- nothing like a computer to magnify a screw up.</p><p></p><p>Weatherby ads often had celebs posing with their Weatherby rifles and dead elephants.[ATTACH=full]312080[/ATTACH]</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2339527, member: 115658"] I did carefully select data because I needed to show pressure data & Hodgdon shows pressures. I converted CPU to PSI by:: [ATTACH type="full" alt="Screenshot (274).png"]312071[/ATTACH] and - .300WM, trim 2.61 [ATTACH type="full" alt="Screenshot (275)_LI.jpg"]312072[/ATTACH] and 300 WBY, trim 2.81 [ATTACH type="full" alt="Screenshot (277)_LI.jpg"]312073[/ATTACH] These data shows a close relational difference between the two cartridges - mostly same powders, same bullet & same barrel length. Looking at the data, I see that the .300 WM loses 2-3% velocity over the .300WBY and that is with the shorty, max 3.340 COAL powder capacity challenged .300 WM. Would RL26 give the .300 WBY a bigger boost. Looking at Alliant RL26 data for the .300 WBY & shorty .300 WM - no pressure data. Not that much difference in velocities. [ATTACH type="full" alt="Screenshot (279).png"]312078[/ATTACH] .300 WM fans might consider giving that round a longer action and greater COAL in the contest with the .300 WBY. My 3.6" WM easily gets 3,100 plus with 178 H ELDM's - real close to published data for .300 WBY. The VihtaVuori site gives the .300WBY about a 200 fps advantage over the shorty, capacity challenged .300WM but with a 1.75 or so longer barrel. I have lots of VN165 & use that in my .300WM with 178's and equal .300 WBY velocities. My paid working experience demanded inclusion of all data & work was subjected to intensive review, loose stuff would get me yelled at or worse- nothing like a computer to magnify a screw up. Weatherby ads often had celebs posing with their Weatherby rifles and dead elephants.[ATTACH type="full" alt="Screenshot (281).png"]312080[/ATTACH] [/QUOTE]
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300 wby vs 300 win mag
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