COL is pretty much meaningless when comparing different rifles, as no two will have the exact same leade.
If you want to compare ogive to start of the lands that's a different thing all together. But if the leade of the rifle differs enough now you're entering widely differing internal case volumes into the equation, which makes cross comparison even more meaningless.
Shoot, re seat, shoot, re seat, evaluate and move on with what works best.
Quite trying to find a faster way to success, the time spent behind the trigger is time well spent.
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There are no absolutes
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