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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm/08 twist
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<blockquote data-quote="desertcj" data-source="post: 1391520" data-attributes="member: 22225"><p>Does he really gun drill and rifle his own blanks? I find that hard to believe. If he won't use whatever blank you ask for, I would look for a new gunsmith. 5 groove rifling may produce less engraving pressure with the bullet as there aren't two opposing lands engraving on the bullet. 5 groove has a land facing a groove. The R in 5R means that the lands are ramped. This is along the same lines of less engraving pressure.</p></blockquote><p></p>
[QUOTE="desertcj, post: 1391520, member: 22225"] Does he really gun drill and rifle his own blanks? I find that hard to believe. If he won't use whatever blank you ask for, I would look for a new gunsmith. 5 groove rifling may produce less engraving pressure with the bullet as there aren't two opposing lands engraving on the bullet. 5 groove has a land facing a groove. The R in 5R means that the lands are ramped. This is along the same lines of less engraving pressure. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm/08 twist
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