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T. O'Heir · August 15, 2018, 10:46 AM

1.750" is the trim-to. It's the SAAMI Max case length. Minimum is 1.720". Max OAL is 2.260". Minimum OAL is 2.125". Anything up to that 2.260" should chamber in any .223 chamber. However, it sounds like your chamber is a tick short of SAAMI Max of 1.857". Easiest fix is to seat 'em in a bit more.
"...slightly different ogive..." Ogives have nothing to do with OAL. OAL is measured from the point to the flat of the case. Ogives are about the unnecessary off-the-lands stuff.

August 15, 2018, 10:46 AM	#5
T. O'Heir Senior Member Join Date: February 13, 2002 Location: Canada Posts: 12,453	1.750" is the trim-to. It's the SAAMI Max case length. Minimum is 1.720". Max OAL is 2.260". Minimum OAL is 2.125". Anything up to that 2.260" should chamber in any .223 chamber. However, it sounds like your chamber is a tick short of SAAMI Max of 1.857". Easiest fix is to seat 'em in a bit more. "...slightly different ogive..." Ogives have nothing to do with OAL. OAL is measured from the point to the flat of the case. Ogives are about the unnecessary off-the-lands stuff. __________________ Spelling and grammar count!