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Long Range Hunting & Shooting
Barrel twist question for 300wm.
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<blockquote data-quote="entoptics" data-source="post: 1573088" data-attributes="member: 104268"><p>In general, weight = length, as the bore diameter is fixed for the caliber, so the only way to add weight is to add length. The only significant variation on this is solid copper (Barnes TSX, Nosler E-Tip, Hornady, GMX, etc) vs lead core (just about everything else), as lead is considerably more dense than copper. A 180 gr copper bullet will necessarily be longer than a 180 gr jacketed lead bullet. A <u>rough</u> rule of thumb for 30 caliber is about 10% lighter. For example, a 180 gr solid copper bullet will be about the same dimensions as a 200 grain conventional copper jacketed lead bullet. A 180 gr lead will be the same size as a 165 copper, etc, etc.</p><p></p><p>Based on what you say above, none of your hopeful ammo choices will be outside the limits for either a 1:8 or 1:10 twist barrel. The heaviest solid copper Barnes TTSX stuff you mention might be too long for 1:10, otherwise, the rest sit squarely in the "sweet spot" IMO.</p><p><span style="font-size: 14px"></span></p><p><span style="font-size: 14px">In general, factory rifles, firing factory ammunition, will not have any issues with the esoteric stuff discussed in this thread. Twist rate is something only the most thorough (</span>nitpicky?) reloaders and long range shooters worry about. <span style="font-size: 14px">There are some rare exceptions (22-250 with 1:14 anyone?!?!), but the rifle/ammo manufacturers are generally working within the same parameters. No rifle company wants their guns to shoot crappy with "common" ammo, and no ammo company wants their ammo to shoot crappy in "common" guns.</span></p><p><span style="font-size: 14px"></span></p><p><span style="font-size: 14px"><em><strong>In summary...Sounds like you won't need to worry about twist rate. Any rifle you pick because of attractive features that fit your needs, will have a suitable twist rate for any of the ammunition choices you mention.</strong></em></span></p></blockquote><p></p>
[QUOTE="entoptics, post: 1573088, member: 104268"] In general, weight = length, as the bore diameter is fixed for the caliber, so the only way to add weight is to add length. The only significant variation on this is solid copper (Barnes TSX, Nosler E-Tip, Hornady, GMX, etc) vs lead core (just about everything else), as lead is considerably more dense than copper. A 180 gr copper bullet will necessarily be longer than a 180 gr jacketed lead bullet. A [U]rough[/U] rule of thumb for 30 caliber is about 10% lighter. For example, a 180 gr solid copper bullet will be about the same dimensions as a 200 grain conventional copper jacketed lead bullet. A 180 gr lead will be the same size as a 165 copper, etc, etc. Based on what you say above, none of your hopeful ammo choices will be outside the limits for either a 1:8 or 1:10 twist barrel. The heaviest solid copper Barnes TTSX stuff you mention might be too long for 1:10, otherwise, the rest sit squarely in the "sweet spot" IMO. [SIZE=14px] In general, factory rifles, firing factory ammunition, will not have any issues with the esoteric stuff discussed in this thread. Twist rate is something only the most thorough ([/SIZE]nitpicky?) reloaders and long range shooters worry about. [SIZE=14px]There are some rare exceptions (22-250 with 1:14 anyone?!?!), but the rifle/ammo manufacturers are generally working within the same parameters. No rifle company wants their guns to shoot crappy with "common" ammo, and no ammo company wants their ammo to shoot crappy in "common" guns. [I][B]In summary...Sounds like you won't need to worry about twist rate. Any rifle you pick because of attractive features that fit your needs, will have a suitable twist rate for any of the ammunition choices you mention.[/B][/I][/SIZE] [/QUOTE]
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Barrel twist question for 300wm.
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