I don't understand this.

Im just glad both of you guys are here to keep me goin! Thank you boyd and al- you both are tops in my book. Merry christmas!
 
jmcasto said:
Thanks for the thoughtful comments.

To answer some questions -
This is a standard .222 Remington, fired in a Remington 700V, factory chamber. The load was: 20g. H4895, 55g Sierra bullet, Remington BR primers. OAL 2.220 (I thought this was long enough based on the Hornady Lock and Load reading but I'm rethinking that).

Based on the comments so far, I just went to my reloading bench and looked at the cases that haven't been de-primed yet and was gobsmacked to find a few cases where the primer stands proud. All primers were all poperly seated during reloading and I'm embarrassed I didn't see/notice the proud primers in the fired cases while at the range. Lesson learned.

Here's my takeaway. The fireforming process is not complete. The cases shorten during fire forming, giving me the shorter measurements (I had not thought about the shoulder datum measurement getting shorter, only the overall case length). I need to ensure a crush fit so the case head is pushed back flush against the bolt head.

I appreciate your patience as I wrap my head around concepts I had not expected.
Click to expand...

Joel,
You chose a powder that's on the slow side for the deuce & a low charge weight to boot. The Hodgdon site says your pressure is about 28900 psi which won't fire form your cases. The classic load for a deuce is 20.5 gr H4198 with a 52 gr hollow point. Try that load & you'll form your case just fine.

The H4198 extreme seemed a bit slower burning than the old IMR 4198 in my 222 last summer, but I didn't get a chance to try heavier loads.

Regards,
Ron
 
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