I also have an Axis 2 .223 HB and recently loaded some Sierra 69gr to 2.255". I found some cases very difficult to eject so I assume mine has the same throat issue. Interestingly some Nosler 60gr BT's loaded to the same length ejected fine. When I unchamber any un fired round regardless of OAL there is a light circle mark left around the base of the bullet about 1/8" above the case mouth. I assume this because it has a tight throat?
Both the Nosler 60 gr BT and Sierra 69gr Match kings shoot extremely well. The two best I have found so far.
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