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Rifles, Reloading, Optics, Equipment
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338 Build Thoughts - 2400 yards!
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<blockquote data-quote="kellyzier" data-source="post: 376705" data-attributes="member: 22137"><p>Joel, Im glad you asked. There are lots of opinions on this web site and I guess alll of us here should have some facts before we go spouting off claims. So I will attempt to clairify my "spouts".</p><p> </p><p>When I started my string, I really hesitated to state my opinion, because there are a number of guys shooting the 338 AM and snipe tac very successfully.</p><p> </p><p>That said, I have not personally shot out a barrel in the 338 AM or snipe tac. However, both Shawn Carlock and Kirby Allan have. In my quest to build the ultimate rifle, I was originally going to buy one of Kirby Allan's used guns (375 AM), this rifle was a 338 AM that he burnt the barrel out of. Instead of re-barreling to 338, he chose to bring her up to 375.</p><p> </p><p>I have had some conversations with Kirby on this, and it's my opinion that he re-barreled to 375 for a reason. The 375 is slower, bigger and carries a ton of energy. I don't want to speak for Kirby, in fact you might ask his opinion or read some of his strings.</p><p> </p><p>What's better, the 338 or 375 AM,,,,below is a copy of an email Kirby sent me............................................</p><p> </p><p><span style="color: #ff0000">((((((Obviously barrel life will be in favor of the 375 as it will offer at least 25% longer barrel life if cared for properly compared to a 338 AM cared for in the same manner. I have really seen no difference in accuracy at long range. Both the 300 gr SMK and 350 gr SMK have very similiar BC numbers. 0.800 for the 338 compared to around 0.780 for the 375. The 338 can drive the 300 gr SMK to 3300 fps pretty easily in a 32" barrel length with comfortable pressures. The 375 can drive the 350 gr SMK to 3250 fps pretty easily in same length barrel with comfortable pressures. In the end, the 338 will have a VERY slight advantage in drop and windage numbers but the 375 will have the advantage of the larger frontal area on big game and higher kenetic energy load as well.)))))))</span></p><p> </p><p>I ended up not purchasing Kirby's gun, because it was simply too heavy. So I ended up at Shawn's place. Shawn had already burnt up the barrel in his 338 AM. I was going to purchase Shawn's gun and he was going to re-barrel for me to 375 AM. I can't recall exactly ( and you can ask shawn or kirby) but I thought one or both of them told me 700 or 800 rounds or so and they saw serious throat erosion in the 338 AM </p><p> </p><p>This is what lead me to my opinion on the 375. Again, it's only my opinion and you know what they say about opinions. I was very careful to give my opinion because there are so many 338's out there and I don't want to knock them.</p><p> </p><p>What can't I pass up on the 375??? Frontal Area....Mass of the bullet...Longer barrel life,,,,,Kenetic engergy,,,,and bullet selection......more recently..hookers, rocky mountain,,,,Lehigh,,,SMK,,,HAAT,,Preditor,,,ZA and GS...</p><p> </p><p>Although you can do similar things in 338, I like the mass and potential BC of the 375's. The 375 bullets still have to come a long way, but we are on the verge of something awesome. Both ZA and GS have some awesome potential for the 375 and I will post some of my findings later this spring.</p><p> </p><p>On your accuracy question...Shawn Carlock requires all rifles to shoot 1 moa if you're taking his long range shooting class. So, I pretty much cater to his line of thinking for acceptable accuracy. Shawns guns and Kirbys guns are 1/2 minute guns, and if I can't get that out of a new gun then somethings wrong.</p><p> </p><p>Again, if you want some exact numbers on barrel life for the 338 AM, shoot Kirby or Shawn message.</p><p> </p><p>Regards,</p><p>KZ</p></blockquote><p></p>
[QUOTE="kellyzier, post: 376705, member: 22137"] Joel, Im glad you asked. There are lots of opinions on this web site and I guess alll of us here should have some facts before we go spouting off claims. So I will attempt to clairify my "spouts". When I started my string, I really hesitated to state my opinion, because there are a number of guys shooting the 338 AM and snipe tac very successfully. That said, I have not personally shot out a barrel in the 338 AM or snipe tac. However, both Shawn Carlock and Kirby Allan have. In my quest to build the ultimate rifle, I was originally going to buy one of Kirby Allan's used guns (375 AM), this rifle was a 338 AM that he burnt the barrel out of. Instead of re-barreling to 338, he chose to bring her up to 375. I have had some conversations with Kirby on this, and it's my opinion that he re-barreled to 375 for a reason. The 375 is slower, bigger and carries a ton of energy. I don't want to speak for Kirby, in fact you might ask his opinion or read some of his strings. What's better, the 338 or 375 AM,,,,below is a copy of an email Kirby sent me............................................ [COLOR=#ff0000]((((((Obviously barrel life will be in favor of the 375 as it will offer at least 25% longer barrel life if cared for properly compared to a 338 AM cared for in the same manner. I have really seen no difference in accuracy at long range. Both the 300 gr SMK and 350 gr SMK have very similiar BC numbers. 0.800 for the 338 compared to around 0.780 for the 375. The 338 can drive the 300 gr SMK to 3300 fps pretty easily in a 32" barrel length with comfortable pressures. The 375 can drive the 350 gr SMK to 3250 fps pretty easily in same length barrel with comfortable pressures. In the end, the 338 will have a VERY slight advantage in drop and windage numbers but the 375 will have the advantage of the larger frontal area on big game and higher kenetic energy load as well.)))))))[/COLOR] I ended up not purchasing Kirby's gun, because it was simply too heavy. So I ended up at Shawn's place. Shawn had already burnt up the barrel in his 338 AM. I was going to purchase Shawn's gun and he was going to re-barrel for me to 375 AM. I can't recall exactly ( and you can ask shawn or kirby) but I thought one or both of them told me 700 or 800 rounds or so and they saw serious throat erosion in the 338 AM This is what lead me to my opinion on the 375. Again, it's only my opinion and you know what they say about opinions. I was very careful to give my opinion because there are so many 338's out there and I don't want to knock them. What can't I pass up on the 375??? Frontal Area....Mass of the bullet...Longer barrel life,,,,,Kenetic engergy,,,,and bullet selection......more recently..hookers, rocky mountain,,,,Lehigh,,,SMK,,,HAAT,,Preditor,,,ZA and GS... Although you can do similar things in 338, I like the mass and potential BC of the 375's. The 375 bullets still have to come a long way, but we are on the verge of something awesome. Both ZA and GS have some awesome potential for the 375 and I will post some of my findings later this spring. On your accuracy question...Shawn Carlock requires all rifles to shoot 1 moa if you're taking his long range shooting class. So, I pretty much cater to his line of thinking for acceptable accuracy. Shawns guns and Kirbys guns are 1/2 minute guns, and if I can't get that out of a new gun then somethings wrong. Again, if you want some exact numbers on barrel life for the 338 AM, shoot Kirby or Shawn message. Regards, KZ [/QUOTE]
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