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Long Range Hunting & Shooting
338 winmag or Lapua?
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<blockquote data-quote="Fiftydriver" data-source="post: 140451" data-attributes="member: 10"><p>Norhman,</p><p></p><p>In most cases the 338 Win Mag will be hard pressed to break 2700 fps with a 250 gr pill. </p><p></p><p>The 338 Edge will push over 3000 fps and at times near 3100 fps with that bullet weight so your numbers are a bit closer then I would say they would be in real world comparisions.</p><p></p><p>From the numbers I list the comparison looks more like this at 1200 yards with the 250 gr SMK using a BC of .587 as listed by Sierra:</p><p></p><p>Energy:</p><p>338 Win Mag........857 ft/lbs</p><p>338 Edge...........1171 ft/lbs</p><p></p><p>Drift in 10 mph wind:</p><p>338 Win Mag........118.3"</p><p>338 Edge...........97.8"</p><p></p><p>That said, you are correct. The rifle will more then likely be used at much closer ranges. Lets look at 600 yards which is not uncommon for guys on this board.</p><p></p><p>Energy at 600 yards:</p><p>338 Win Mag.............1899 ft/lbs</p><p>338 Edge................2597 ft/lbs</p><p></p><p>Drift:</p><p>338 Win Mag.............24.7"</p><p>338 Edge................20.3"</p><p></p><p>Here I will admit that windage is really pretty much the same basically. But at closer ranges, the big 338 Edge will have an even larger advantage in kenetic energy.</p><p></p><p>Now lets look at why the 338 Edge is really superior to the 338 Win Mag, its ability to use the 300 gr SMK!!! </p><p></p><p>The Edge will get you 2800-2850 fps with this very large bullet. In the 338 Win Mag it is really not even a viable option in my opinion because velocity will be less then 2500 fps at most. So if we compare the 338 Win Mag loaded with a 250 gr SMK at 2700 fps and the 338 Edge with the 300 gr SMK at 2850 fps, lets see how they compare at 1200 yards:</p><p></p><p>Drift:</p><p>338 Win Mag...........118.3"</p><p>338 Edge..............77.2"</p><p></p><p>Energy:</p><p>338 Win Mag...........857 ft/lbs</p><p>338 Edge..............1684 ft/lbs</p><p></p><p>The comparision become clearer now as to why the Edge is vastly superior when used with the proper bullets for that size of a case. Not only these numbers but if you look at retained velocity, the 338 Win Mag drops under 1500 fps at around 900 yards. I like to use 1500 fps as a standard but proper bullet expansion with these type bullets. The Edge will carry this velocity well past 1200 yards with the 300 gr SMK.</p><p></p><p>Really, when using the proper bullet for each design, there is no real comparision between the two. Yes, if you use the best bullet in the smaller round and limit the big round by using that same bullet the comparision is better but not an honest predicition of how the two will perform head to head with their best personalities.</p><p></p><p>Just my opinion.</p><p></p><p>It would be like comparing my 7mm AM to a 7mm Rem Mag with both loaded with the 160 gr Accubond. Certainly my 7mm AM will have a velocity advantage but down range advantage will not be what one would expect. </p><p></p><p>However if you use a 160 gr Accubond in the Rem Mag and the 200 gr ULD RBBT in the 7mm AM, they are not even remotely in the same class of performance.</p><p></p><p>Just what I see here. /ubbthreads/images/graemlins/grin.gif</p><p></p><p>Good Shooting!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 140451, member: 10"] Norhman, In most cases the 338 Win Mag will be hard pressed to break 2700 fps with a 250 gr pill. The 338 Edge will push over 3000 fps and at times near 3100 fps with that bullet weight so your numbers are a bit closer then I would say they would be in real world comparisions. From the numbers I list the comparison looks more like this at 1200 yards with the 250 gr SMK using a BC of .587 as listed by Sierra: Energy: 338 Win Mag........857 ft/lbs 338 Edge...........1171 ft/lbs Drift in 10 mph wind: 338 Win Mag........118.3" 338 Edge...........97.8" That said, you are correct. The rifle will more then likely be used at much closer ranges. Lets look at 600 yards which is not uncommon for guys on this board. Energy at 600 yards: 338 Win Mag.............1899 ft/lbs 338 Edge................2597 ft/lbs Drift: 338 Win Mag.............24.7" 338 Edge................20.3" Here I will admit that windage is really pretty much the same basically. But at closer ranges, the big 338 Edge will have an even larger advantage in kenetic energy. Now lets look at why the 338 Edge is really superior to the 338 Win Mag, its ability to use the 300 gr SMK!!! The Edge will get you 2800-2850 fps with this very large bullet. In the 338 Win Mag it is really not even a viable option in my opinion because velocity will be less then 2500 fps at most. So if we compare the 338 Win Mag loaded with a 250 gr SMK at 2700 fps and the 338 Edge with the 300 gr SMK at 2850 fps, lets see how they compare at 1200 yards: Drift: 338 Win Mag...........118.3" 338 Edge..............77.2" Energy: 338 Win Mag...........857 ft/lbs 338 Edge..............1684 ft/lbs The comparision become clearer now as to why the Edge is vastly superior when used with the proper bullets for that size of a case. Not only these numbers but if you look at retained velocity, the 338 Win Mag drops under 1500 fps at around 900 yards. I like to use 1500 fps as a standard but proper bullet expansion with these type bullets. The Edge will carry this velocity well past 1200 yards with the 300 gr SMK. Really, when using the proper bullet for each design, there is no real comparision between the two. Yes, if you use the best bullet in the smaller round and limit the big round by using that same bullet the comparision is better but not an honest predicition of how the two will perform head to head with their best personalities. Just my opinion. It would be like comparing my 7mm AM to a 7mm Rem Mag with both loaded with the 160 gr Accubond. Certainly my 7mm AM will have a velocity advantage but down range advantage will not be what one would expect. However if you use a 160 gr Accubond in the Rem Mag and the 200 gr ULD RBBT in the 7mm AM, they are not even remotely in the same class of performance. Just what I see here. [img]/ubbthreads/images/graemlins/grin.gif[/img] Good Shooting!! Kirby Allen(50) [/QUOTE]
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