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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
What to replace the 6.8 SPC II with
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<blockquote data-quote="jake545" data-source="post: 2717713" data-attributes="member: 125700"><p>Mainly freebore and correcting the angle of the lands etc that were transposed in the beginning and not caught until saami approval. There was almost a 90 degree angle where the lands started and caused pressure spikes in early testing. Someone transposed numbers in the reamer print and didn't catch it. The spc ii is how it should have been in the beginning but they did lengthen the freebore a little. The bolts are the same but some may be marked as spc ii but there is zero difference. The head spacing is the same as well. It's very similar to how the 556 and 223 are, other than the mess up on the lands. Pretty much all factory loads now says are down loaded to be same in the original (messsd up) chambers.</p></blockquote><p></p>
[QUOTE="jake545, post: 2717713, member: 125700"] Mainly freebore and correcting the angle of the lands etc that were transposed in the beginning and not caught until saami approval. There was almost a 90 degree angle where the lands started and caused pressure spikes in early testing. Someone transposed numbers in the reamer print and didn’t catch it. The spc ii is how it should have been in the beginning but they did lengthen the freebore a little. The bolts are the same but some may be marked as spc ii but there is zero difference. The head spacing is the same as well. It’s very similar to how the 556 and 223 are, other than the mess up on the lands. Pretty much all factory loads now says are down loaded to be same in the original (messsd up) chambers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
What to replace the 6.8 SPC II with
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