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Question about the 338 lapua
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<blockquote data-quote="sable tireur" data-source="post: 1335972" data-attributes="member: 27307"><p><span style="font-size: 15px">odoylerules,</span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px">Here are a couple of thoughts just for consideration and conversation. This same discussion is taking place on multiple forums with regard to longer range shooting and hunting with the newer, heavy for caliber, high BC hunting bullets and what I consider to be 'main stream' cartridges. </span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px">The primary consideration being given to the selection of these bullets is the high BC. Generically speaking, many shooters consider this to the most important feature of these bullets. But they are not thinking through the necessity of the increase in horsepower which is required to make the best use of both the BC by the ability to move the weight down range. This brings into play the concept of using a lighter bullet with a high BC but being pushed at a much higher velocity, achieving better results in the trajectory and with retained energy. We can run these numbers in the examples of the 6.5mm/155 gr., the 7mm/195 gr., the .30 cal./230 gr. (soon to be 245 gr.) and the .338/300 gr.</span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px">When we run some simple calculations, we discover, as you did, that the stunning performance of these heavier, high BC bullets is not quite so stunning. In fact, it can be seen as slightly mediocre. The reason for this is two-fold:</span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px">Not enough horsepower to achieve the higher velocity necessary to get to that level which will beat out the lighter, high BC bullets. </span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px">The unwillingness or inability to use those longer barrels which provide the length for the increased powder capacity to burn and to act on the bullets. </span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px">If you want to stay in the realm of high-performance without getting into much larger capacity cases and slightly unwieldy barrels, run the lighter, high BC bullets at higher velocities. But you need to be willing to accept the limits imposed by the performance. You might want to expect more but let the reality of the case/bullet combination tell you what to expect.</span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px">Regards.</span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"></span></p></blockquote><p></p>
[QUOTE="sable tireur, post: 1335972, member: 27307"] [SIZE=4]odoylerules, Here are a couple of thoughts just for consideration and conversation. This same discussion is taking place on multiple forums with regard to longer range shooting and hunting with the newer, heavy for caliber, high BC hunting bullets and what I consider to be 'main stream' cartridges. [B][/B] The primary consideration being given to the selection of these bullets is the high BC. Generically speaking, many shooters consider this to the most important feature of these bullets. But they are not thinking through the necessity of the increase in horsepower which is required to make the best use of both the BC by the ability to move the weight down range. This brings into play the concept of using a lighter bullet with a high BC but being pushed at a much higher velocity, achieving better results in the trajectory and with retained energy. We can run these numbers in the examples of the 6.5mm/155 gr., the 7mm/195 gr., the .30 cal./230 gr. (soon to be 245 gr.) and the .338/300 gr. When we run some simple calculations, we discover, as you did, that the stunning performance of these heavier, high BC bullets is not quite so stunning. In fact, it can be seen as slightly mediocre. The reason for this is two-fold: [B][/B] Not enough horsepower to achieve the higher velocity necessary to get to that level which will beat out the lighter, high BC bullets. [B][/B] The unwillingness or inability to use those longer barrels which provide the length for the increased powder capacity to burn and to act on the bullets. [B][/B] If you want to stay in the realm of high-performance without getting into much larger capacity cases and slightly unwieldy barrels, run the lighter, high BC bullets at higher velocities. But you need to be willing to accept the limits imposed by the performance. You might want to expect more but let the reality of the case/bullet combination tell you what to expect. Regards. [B][/B] [B][/B][/SIZE] [/QUOTE]
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