Quote Originally Posted by Mburgus View Post
I purchased a Hornady curved OAL gauge. One of my AR15 rifles is way out there. I get an OAL of 2.4080. And I didn't believe it. So I broke it down to just the barrel. Yeppers, the OAL is 2.4080 How in the blazzes can it be that far off??? My other rifles check out just fine.




Mark
I don't know if that's out of spec or not, but my AR was long throated as well. Can't recall the exact measurement, somewhere in the 2.3ish range. Unless it's a bolt gun or a high end barrel most have room to play with. My understanding of this is so it can accept a wide variety of different bullets. The 69gr Sierra's are a pretty long bullet. But your OAL in a AR is limited by your mags. I know there are some AR mags that allow longer OALs.

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