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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
3 groove or 5 groove rebore
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<blockquote data-quote="tim_w" data-source="post: 1824203" data-attributes="member: 11132"><p>Here is my take based on my experience.</p><p></p><p>The 3 groove throat will last a bit longer but is harder on bullet jackets. The 5 groove last a bit less and gentler on jackets. Both can produce BR level group consistency. Generalizing no matter number of grooves the ratio of groove to land area will be very close. The less grooves the larger the lands and thus the size of each engraving deformation on the bullet. Increase you have more engraving but smaller marks</p><p></p><p>In the large scheme it really only matters if you are driving bullets to the edge with fast twist and high velocities and barrel length can come into play. I doubt you would have any issues with a 35 cal. so just get the barrel that you want all things being equal.</p></blockquote><p></p>
[QUOTE="tim_w, post: 1824203, member: 11132"] Here is my take based on my experience. The 3 groove throat will last a bit longer but is harder on bullet jackets. The 5 groove last a bit less and gentler on jackets. Both can produce BR level group consistency. Generalizing no matter number of grooves the ratio of groove to land area will be very close. The less grooves the larger the lands and thus the size of each engraving deformation on the bullet. Increase you have more engraving but smaller marks In the large scheme it really only matters if you are driving bullets to the edge with fast twist and high velocities and barrel length can come into play. I doubt you would have any issues with a 35 cal. so just get the barrel that you want all things being equal. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
3 groove or 5 groove rebore
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