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Long Range Hunting & Shooting
.300 Allen Xpress ....looking for all the info i can get
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<blockquote data-quote="Fiftydriver" data-source="post: 166603" data-attributes="member: 10"><p>JWP475,</p><p> </p><p>I did read your post, several times and you flat out stated that even with the strength and quality of the Lapua case, the 300 AX offers nothing over the 300 RUM.</p><p> </p><p>Yes its because of the added strength but also the added case capacity that gives it a boost over the 300 RUM.</p><p> </p><p>IT has been like that down the line with my Allen Magnums and Allen Xpress rounds based on the 338 Lapua case compared to the RUM rounds in the same caliber.</p><p> </p><p>In a 26" barrel, the 7mm RUM will drive a 160 gr bullet to 3250 to 3300 fps with very top end loads, meaning 4 firings per case before the primer pockets let loose. My 7mm Allen Magnum can easily break 3500 fps with this same bullet weight in same barrel lengths with 2 to 3 times this case life. Not to mention it can drive a 180 gr bullet to the same velocity as a 7mm RUM can drive the 160 gr bullet. Or another example, my 7mm AM will drive a 200 gr ULD RBBT as fast as a 7mm RUM will drive a 180 gr Berger with same length barrels. Yes, velocity is the same, BC is dramatically different that is where the real advantage comes from.</p><p> </p><p>With the 338 Allen Xpress, I can push a 300 gr SMK to 2900 fps in a 27" barrel length. Compared to a 338-300 RUM, thats 100 to 125 fps more velocity then can be achieved with this round in the same length barrel with same bullet. And I have yet to even push this round to its limits yet as far as pressure. By that I mean i have yet to even see a shiny mark on the case head from the ejector........</p><p> </p><p>The 300 Allen Xpress has offered the same exact performance gains over the RUM.</p><p> </p><p>Is 100 to 150 fps worth it, Maybe not if your talking about the middle of the road performance rounds but when your talking about adding that to the top end of the performance ladder, I feel its plenty significant.</p><p> </p><p>its like saying the 280 rem will do anything the 7mm Rem Mag will do, or that the 7mm Rem Mag will do anything the 7mm STW will do, or that the 7mm STW will do anything the 7mm RUM will do, or that the 7mm RUM will do anything the 7mm AM will do. They are all steps in performance progression, are they worth it, maybe not to some but to many it is well worth it.</p><p> </p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 166603, member: 10"] JWP475, I did read your post, several times and you flat out stated that even with the strength and quality of the Lapua case, the 300 AX offers nothing over the 300 RUM. Yes its because of the added strength but also the added case capacity that gives it a boost over the 300 RUM. IT has been like that down the line with my Allen Magnums and Allen Xpress rounds based on the 338 Lapua case compared to the RUM rounds in the same caliber. In a 26" barrel, the 7mm RUM will drive a 160 gr bullet to 3250 to 3300 fps with very top end loads, meaning 4 firings per case before the primer pockets let loose. My 7mm Allen Magnum can easily break 3500 fps with this same bullet weight in same barrel lengths with 2 to 3 times this case life. Not to mention it can drive a 180 gr bullet to the same velocity as a 7mm RUM can drive the 160 gr bullet. Or another example, my 7mm AM will drive a 200 gr ULD RBBT as fast as a 7mm RUM will drive a 180 gr Berger with same length barrels. Yes, velocity is the same, BC is dramatically different that is where the real advantage comes from. With the 338 Allen Xpress, I can push a 300 gr SMK to 2900 fps in a 27" barrel length. Compared to a 338-300 RUM, thats 100 to 125 fps more velocity then can be achieved with this round in the same length barrel with same bullet. And I have yet to even push this round to its limits yet as far as pressure. By that I mean i have yet to even see a shiny mark on the case head from the ejector........ The 300 Allen Xpress has offered the same exact performance gains over the RUM. Is 100 to 150 fps worth it, Maybe not if your talking about the middle of the road performance rounds but when your talking about adding that to the top end of the performance ladder, I feel its plenty significant. its like saying the 280 rem will do anything the 7mm Rem Mag will do, or that the 7mm Rem Mag will do anything the 7mm STW will do, or that the 7mm STW will do anything the 7mm RUM will do, or that the 7mm RUM will do anything the 7mm AM will do. They are all steps in performance progression, are they worth it, maybe not to some but to many it is well worth it. Kirby Allen(50) [/QUOTE]
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.300 Allen Xpress ....looking for all the info i can get
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