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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throat erosion and double-based powders.
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<blockquote data-quote="Bart B" data-source="post: 633920" data-attributes="member: 5302"><p>Stainless barrels last about 10 to 20 percent longer than chrome moly ones.</p><p></p><p>After the throat/leade has advanced about 1/10th inch, accuracy will get worse.</p><p></p><p>Here's a chart I made using my formulas based on actual life of barrels from a bunch of folks. For example, if your 7mm cartridge burns 55 grains of powder, it'll get about 1531 rounds of life if it starts out shooting 1/4 MOA at 100 yards compared to a 7-08 cartridge burning 39 grains. If the rifle's a 3/4 MOA shooter, it'll get a bit over 3000 rounds of accuracy at that level.</p><p></p><p><img src="http://farm8.staticflickr.com/7233/6878434120_af786d4abd_z.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Bart B, post: 633920, member: 5302"] Stainless barrels last about 10 to 20 percent longer than chrome moly ones. After the throat/leade has advanced about 1/10th inch, accuracy will get worse. Here's a chart I made using my formulas based on actual life of barrels from a bunch of folks. For example, if your 7mm cartridge burns 55 grains of powder, it'll get about 1531 rounds of life if it starts out shooting 1/4 MOA at 100 yards compared to a 7-08 cartridge burning 39 grains. If the rifle's a 3/4 MOA shooter, it'll get a bit over 3000 rounds of accuracy at that level. [IMG]http://farm8.staticflickr.com/7233/6878434120_af786d4abd_z.jpg[/IMG] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throat erosion and double-based powders.
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