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Old October 23, 2012, 12:42 AM   #4
hk33ka1
Senior Member
 
Join Date: April 20, 2010
Posts: 275
The COAL will depend on the shape of the bullet.

I had a .45 230gr RN plated that had to be seated shorter than a 230gr FMJ to chamber in my 1911 but it worked fine in Glock 21 go figure. Same problem as yours it would not fully chamber/ go into battery. For argument sake I think the FMJ was fine at 1.25" and I had to seat the plated RN to 1.20" to chamber in all my .45s.

The shape of the ogive (part of bullet nose fat enough to touch rifling) is different from brand to brand or part# of otherwise similar bullets and can require different seating depth.
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