My new ar

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chazroh

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It now has a 3lb trigger in it. Here's my dumb question, I've always measured outside of farthest holes then deducted the bullet diameter from that to get center to center distance. Is that correct or should you just measure outside dimensions?
According to those parameters I had two groups about.401 and I don't remember the others.
 
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tRidiot

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It now has a 3lb trigger in it. Here's my dumb question, I've always measured outside of farthest holes then deducted the bullet diameter from that to get center to center distance. Is that correct or should you just measure outside dimensions?
According to those parameters I had two groups about.401 and I don't remember the others.

That would be equivalent to measuring center-to-center without any adjustment - which is how I always assumed it was done.
 

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