In the jump and crimp thread, rasp65 posted a method to accurately measure OAL to determine how long you can seat a bullet to reach the lands. I dutifully sliced the neck of a case and peformed the measurement with four different bullets. It works quite well, and the measurements are easily repeatable to the thousandth.
To my surprise, I discovered that with my barrel I can't get anywhere close to the lands if I seat at mag length. Here are the cartridge OAL measurements I took for each bullet to reach the lands:
Scenar 123 - 2.342"
Amax 123 - 2.330"
Sierra 123 - 2.347"
Sierra 107 - 2.351"
I've read here on the Grendel forum that some folks have trouble finding loads that don't touch the lands, so the throat on this barrel seems excessive to me. I don't have many rounds through the barrel at this point, but the accuracy so far certainly isn't what I'd hoped, particularly for a $550 tube. Thoughts?
Scott
To my surprise, I discovered that with my barrel I can't get anywhere close to the lands if I seat at mag length. Here are the cartridge OAL measurements I took for each bullet to reach the lands:
Scenar 123 - 2.342"
Amax 123 - 2.330"
Sierra 123 - 2.347"
Sierra 107 - 2.351"
I've read here on the Grendel forum that some folks have trouble finding loads that don't touch the lands, so the throat on this barrel seems excessive to me. I don't have many rounds through the barrel at this point, but the accuracy so far certainly isn't what I'd hoped, particularly for a $550 tube. Thoughts?
Scott
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