Just bought some Aguila 124 gr RN bullets and look at the cannelure about half way down the case. Never seen that before on a semi auto cartridge. I've seen it on some 44 mag cases though.
I put a Federal 115 gr RN next to it for reference.
While I didn't measure the OAL, it is noticeably shorter too.
I split a case with a buddy ($10 per 50) and he says he has had no problems with them feeding, so I'm really not worried, just curious.
Thanks in advance.
