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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6mm ARC
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<blockquote data-quote="Buck Fever" data-source="post: 1916274" data-attributes="member: 113501"><p>When Alexander Arms developed it, they modified .223 bolts and deepened the bolt face which significantly reduced the cross section of metal supporting the bolt lugs. When you load 6.5 Grendle hot enough to stay supersonic at 1,000 yards with 123 grain bullets in a 20" or shorter barrel, the bolt lugs like to break off.</p><p></p><p>The SPC was essentially a clean sheet of paper design and they made sure their case head left enough meat in the bolt face. Sadly 6.8 SPC and 6.5 Grendle were compared a lot because they both hit the scene around the same time. They were designed for two entirely different purposes. </p><p></p><p>6.8 SPC isn't trying to be a 1,000 yard target round. 6.5 Grendle isn't trying to be a potential 5.56x45 replacement.</p><p></p><p>I've got a 6.8 SPC and it is great. It runs like a top and shoots sub-MOA out to 600 yards, I haven't tried farther.</p><p></p><p>I have 6.5 Creedmoor for 1,000 yard shooting because I don't want to deal with 6.5 Grendle issues and I'm glad to step up to 147 grain bullets and about 200fps more muzzle velocity.</p><p></p><p>I've got a TAC6 wildcat for when I want to shoot 1,000 yards with an AR15. It shoots a 105 grain Berger about 2,700fps from an 18" barrel.</p></blockquote><p></p>
[QUOTE="Buck Fever, post: 1916274, member: 113501"] When Alexander Arms developed it, they modified .223 bolts and deepened the bolt face which significantly reduced the cross section of metal supporting the bolt lugs. When you load 6.5 Grendle hot enough to stay supersonic at 1,000 yards with 123 grain bullets in a 20" or shorter barrel, the bolt lugs like to break off. The SPC was essentially a clean sheet of paper design and they made sure their case head left enough meat in the bolt face. Sadly 6.8 SPC and 6.5 Grendle were compared a lot because they both hit the scene around the same time. They were designed for two entirely different purposes. 6.8 SPC isn't trying to be a 1,000 yard target round. 6.5 Grendle isn't trying to be a potential 5.56x45 replacement. I've got a 6.8 SPC and it is great. It runs like a top and shoots sub-MOA out to 600 yards, I haven't tried farther. I have 6.5 Creedmoor for 1,000 yard shooting because I don't want to deal with 6.5 Grendle issues and I'm glad to step up to 147 grain bullets and about 200fps more muzzle velocity. I've got a TAC6 wildcat for when I want to shoot 1,000 yards with an AR15. It shoots a 105 grain Berger about 2,700fps from an 18" barrel. [/QUOTE]
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