Quote:
Originally Posted by milehipo
Ok in an attempt ot determine the COAL, I inserted a unprimed empty case with a Sierra 220 HPBT into the chamber and relaesed the bolt to seat the round. Ejected the round and measured the case of which was 2.322.
I understand that it is sitting right against the Lands so it needs to be back off a bit.
Sorry but another question, was this somewhat an accurate way to determine the COAL? If so, how much more should I seat the bullet to obtain the best results?
Once complete I can leave the seating die alone and move on from there.
Thanks again.
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You need to buy a bullet comparator to measure off the ogive and not the tip of the bullet.
Otherwise you are just guessing and basing your seating depth on something that varies too much bullet to bullet.