I am testing loads for a friend using Hornadys SP 55gr. bullets.
These bullets have a cannelure. I like to seat my bullets so OAL is 2.26 or 2.25, but with these bullets I have to seat to 2.20 in order to get the cannelure engaged. At 2.10 OAL the cannelure is about halfway into the case. The case length has been trimmed to 1.70. Why are they designed to be so far away from the lands? These loads will be used in AR platform. I wonder if they are designed for bolt action and not ar.
These bullets have a cannelure. I like to seat my bullets so OAL is 2.26 or 2.25, but with these bullets I have to seat to 2.20 in order to get the cannelure engaged. At 2.10 OAL the cannelure is about halfway into the case. The case length has been trimmed to 1.70. Why are they designed to be so far away from the lands? These loads will be used in AR platform. I wonder if they are designed for bolt action and not ar.