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Long Range Hunting & Shooting
Comparison of Long Range Cartridges?
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<blockquote data-quote="Fiftydriver" data-source="post: 159050" data-attributes="member: 10"><p>Bwaites,</p><p></p><p>The 338 Allen Magnum is based on the 408 Chey Tac case, necked down, shoulder moved forward and case blown out to the Allen Magnum shoulder and body configuration.</p><p></p><p>At this time, it is the largest capacity 338 wildcat based on the 408 CT parent case by around 6 to 7 grains.</p><p></p><p>You are looking at using 144 to 148 grains of powder under a 300 gr SMK bullet for a velocity pushing 3350 to 3400 fps in 33" barrels with top end loads. Most load to 3300 fps however just to keep things really comfortable.</p><p></p><p>Even at that its head and shoulders above the smaller capacity 338 magnums but obviously barrrel life will be somewhat shorter.</p><p></p><p>Performance numbers in same length barrels, that being 33" barrels I would say you would get the following, all with the 300 gr SMK:</p><p></p><p>338 Edge.............2900 fps</p><p>338 Allen Xpress.....3000 fps</p><p>338 Allen Magnum.....3350 fps</p><p></p><p>Accuracy wise, in a quality rifle they are pretty much the same to be honest. All will make hitting at ranges out to 1000 yards pretty simple. The 338 AM just makes the wind a bit less noticable and time of flight ALOT less. Energy numbers are also much higher for the 338 AM then the smaller rounds obviously. </p><p></p><p>Recoil is really pretty much the same between all of them. THe 338 AM is limited to around 16 lbs for min weight with all steel barrels whereas the smaller rounds can be chambered in much lighter rifles. Still a 16 to 17 lb rifle is not all that hard to pack around in many hunting situations with a good sling or rifle pack.</p><p></p><p>I do not have a pic of all of them together yet but will work on that here soon.</p><p></p><p>Really your talking about the top of the 338 magnum performane pile with the 338 Edge and 338 AX and then you take another huge leap up to the 338 AM performance level. Not really even remotely in the same class of performance.</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 159050, member: 10"] Bwaites, The 338 Allen Magnum is based on the 408 Chey Tac case, necked down, shoulder moved forward and case blown out to the Allen Magnum shoulder and body configuration. At this time, it is the largest capacity 338 wildcat based on the 408 CT parent case by around 6 to 7 grains. You are looking at using 144 to 148 grains of powder under a 300 gr SMK bullet for a velocity pushing 3350 to 3400 fps in 33" barrels with top end loads. Most load to 3300 fps however just to keep things really comfortable. Even at that its head and shoulders above the smaller capacity 338 magnums but obviously barrrel life will be somewhat shorter. Performance numbers in same length barrels, that being 33" barrels I would say you would get the following, all with the 300 gr SMK: 338 Edge.............2900 fps 338 Allen Xpress.....3000 fps 338 Allen Magnum.....3350 fps Accuracy wise, in a quality rifle they are pretty much the same to be honest. All will make hitting at ranges out to 1000 yards pretty simple. The 338 AM just makes the wind a bit less noticable and time of flight ALOT less. Energy numbers are also much higher for the 338 AM then the smaller rounds obviously. Recoil is really pretty much the same between all of them. THe 338 AM is limited to around 16 lbs for min weight with all steel barrels whereas the smaller rounds can be chambered in much lighter rifles. Still a 16 to 17 lb rifle is not all that hard to pack around in many hunting situations with a good sling or rifle pack. I do not have a pic of all of them together yet but will work on that here soon. Really your talking about the top of the 338 magnum performane pile with the 338 Edge and 338 AX and then you take another huge leap up to the 338 AM performance level. Not really even remotely in the same class of performance. Kirby Allen(50) [/QUOTE]
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