mbatson13
mbatson13
4 posts
Joined March 2013

.223 case gauge conundrum

I'm soooo close to reloading my .223 on a Dillon XL 650! This will be my very first time reloading but I'm not sure I've got the case dimensions right. I have the Dillon case gauge and after running a few cases through the FL size die, both the head and the neck fall within the "steps" of the gauge. However, my calipers are showing a length of 1.759". If the case falls within the case gauge steps, shouldn't I expect a case length of 1.75" or less? Why would the calipers show it longer but the gauge show (visually) either spot on just a hair shorter? Do I need to trim back down to 1.75 according to the caliper or can I trust the case gauge?
slrosen
slrosen
29 posts
Joined November 2008

RE: .223 case gauge conundrum

Just my opinion, but based on my experience with Dillon case gauges (and with assorted calipers ranging from inexpensive no-name imports to top-quality/high-price brands like Starrett or Brown & Sharp), I'd suspect that the issue may be with your calipers...
dillon
Administrator
dillon
2,867 posts
Joined July 2007

RE: .223 case gauge conundrum

Max case length is 1.760" for .223 Remington. If your case measures at 1.759" after sizing, then it won't protrude above the top of the gage.
mneblett
mneblett
19 posts
Joined October 2010

RE: .223 case gauge conundrum

My understanding is that If the base-to-shoulder distance is correct, the gauge lets you know whether the overall length of the case is too long (over 1.760"), not too short (under 1.750"). 1.759" should be between the top/bottom of the step.

If the mouth is below the end of the gauge and above the lower step, you should be able to trust the gauge.