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Varmint Hunting
Caliber & Bullet...really 2 posts in 1 lol
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<blockquote data-quote="loaders_loft" data-source="post: 353304" data-attributes="member: 10540"><p>Liltank, why would a 25-06 get better barrel life than a 6.5-06? </p><p>For that matter, why would the 25-06 be a better choice?</p><p> </p><p>Lets run the numbers and see.</p><p> </p><p>Using the lightest Vmax available in each, Hornady lists the following max charges for IMR4350 with 24" test barrels on both cartridges.</p><p> </p><p>25-06, 75gr Vmax: 56.7gr, 3600 fps</p><p>6.5-06, 95gr Vmax: 52.3gr, 3400 fps</p><p> </p><p>Doesn't quite fit your theory, "more powder= more heat+high velocities= limited barrel life."</p><p> </p><p>Using the nosler drop tables, compare performance. The BC's are (75gr Vmax) .290 vs. (95gr Vmax) .365 so with a 200 yard zero, look at , the 25-06 has 57.4" drop and 1746fps terminal, and the 6.5-06 has 56.8" drop and 1927fps terminal velocity.</p><p> </p><p>Looks like you get more for less with the 6.5-06 than the 25-06. Since this thread is about varminting, I've compared varmint bullets. </p><p> </p><p>Consider the heavy for caliber bullets available in 6.5cal; the 6.5-06 will really shine over the 25-06.</p></blockquote><p></p>
[QUOTE="loaders_loft, post: 353304, member: 10540"] Liltank, why would a 25-06 get better barrel life than a 6.5-06? For that matter, why would the 25-06 be a better choice? Lets run the numbers and see. Using the lightest Vmax available in each, Hornady lists the following max charges for IMR4350 with 24" test barrels on both cartridges. 25-06, 75gr Vmax: 56.7gr, 3600 fps 6.5-06, 95gr Vmax: 52.3gr, 3400 fps Doesn't quite fit your theory, "more powder= more heat+high velocities= limited barrel life." Using the nosler drop tables, compare performance. The BC's are (75gr Vmax) .290 vs. (95gr Vmax) .365 so with a 200 yard zero, look at , the 25-06 has 57.4" drop and 1746fps terminal, and the 6.5-06 has 56.8" drop and 1927fps terminal velocity. Looks like you get more for less with the 6.5-06 than the 25-06. Since this thread is about varminting, I've compared varmint bullets. Consider the heavy for caliber bullets available in 6.5cal; the 6.5-06 will really shine over the 25-06. [/QUOTE]
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Caliber & Bullet...really 2 posts in 1 lol
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