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375-408 CheyTac (Kirby Alert!!!!!!) question
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<blockquote data-quote="Fiftydriver" data-source="post: 120185" data-attributes="member: 10"><p>Triggerfifty,</p><p></p><p>I am curious what numbers you are using as far as BC in your 338 comparision. From actual bullet drop in my 338 AM with the 300 gr SMK I need to use a BC of .810 to get the exbal ballistic model to match my actual bullet flight.</p><p></p><p>With 3300 fps and that BC you are still retaining 1100 fps at 2500 yards????</p><p></p><p>I load my 338 AM to a very mild level and get 3440 fps with that bullet. This load is still getting 1100 fps at 2600 yards.</p><p></p><p>Now I surely agree that the 375 has great potential but please tell me what bullet you are using to keep it super sonic out to 2900 yards. I would bet money its the LRB bullet with its BC right at or slightly over 1.000.</p><p></p><p>First off, thats the only bullet out there that will do this and you better hope to hell your rifle shoots it well because other then that there is no other options. </p><p></p><p>Sierra is coming out with a SMK in 375 which will be a great boon to that round but it is supposed to be a bullet in the 350 to 375 gr range. Given those bullet weights and even with the best VLD design, you will be looking at a BC still in the .8 range, very similiar to the 300 gr 338 SMK. Maybe slightly higher but nothing even remotely similiar to the LRB bullet which at this time I am not even sure if it is available to the public???? I got on their web sight the other day and did not see it available.</p><p></p><p>Then also your dealing with a solid VLD bullet design, not the greatest for big game hunting and in many states not even legal to use on game.</p><p></p><p>I think if you compare apples to apples your gap between the 338 and 375 will drop considerably. I am not denying that the 375 has alot of potential and perhaps more then the 338 rounds but with similiar bullet designs its not the huge gap you say it is in my opinion.</p><p></p><p>I have tested the 300 gr SMK alot at long range and out of the 338 Kahn which will get you 3150-3200 fps it stays very consistant out to 2000 yards. Once it goes past that they fly all over hell.</p><p></p><p>I have shot my 338 AM with the same bullet to 2500 yards and accuracy and consistancy are great telling me they are still super sonic and this load is right at 3400 fps.</p><p></p><p>Again, not wanting to pick a fight by any means, just want you to explain what bullet you are using in the 375 for this comparision?</p><p></p><p>Good Shooting!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 120185, member: 10"] Triggerfifty, I am curious what numbers you are using as far as BC in your 338 comparision. From actual bullet drop in my 338 AM with the 300 gr SMK I need to use a BC of .810 to get the exbal ballistic model to match my actual bullet flight. With 3300 fps and that BC you are still retaining 1100 fps at 2500 yards???? I load my 338 AM to a very mild level and get 3440 fps with that bullet. This load is still getting 1100 fps at 2600 yards. Now I surely agree that the 375 has great potential but please tell me what bullet you are using to keep it super sonic out to 2900 yards. I would bet money its the LRB bullet with its BC right at or slightly over 1.000. First off, thats the only bullet out there that will do this and you better hope to hell your rifle shoots it well because other then that there is no other options. Sierra is coming out with a SMK in 375 which will be a great boon to that round but it is supposed to be a bullet in the 350 to 375 gr range. Given those bullet weights and even with the best VLD design, you will be looking at a BC still in the .8 range, very similiar to the 300 gr 338 SMK. Maybe slightly higher but nothing even remotely similiar to the LRB bullet which at this time I am not even sure if it is available to the public???? I got on their web sight the other day and did not see it available. Then also your dealing with a solid VLD bullet design, not the greatest for big game hunting and in many states not even legal to use on game. I think if you compare apples to apples your gap between the 338 and 375 will drop considerably. I am not denying that the 375 has alot of potential and perhaps more then the 338 rounds but with similiar bullet designs its not the huge gap you say it is in my opinion. I have tested the 300 gr SMK alot at long range and out of the 338 Kahn which will get you 3150-3200 fps it stays very consistant out to 2000 yards. Once it goes past that they fly all over hell. I have shot my 338 AM with the same bullet to 2500 yards and accuracy and consistancy are great telling me they are still super sonic and this load is right at 3400 fps. Again, not wanting to pick a fight by any means, just want you to explain what bullet you are using in the 375 for this comparision? Good Shooting!! Kirby Allen(50) [/QUOTE]
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