What did you do in the reloading room today?

:oops::mad: I will discuss with the smith and report back. Thanks again.

Going off SAAMI min spec and that reamer print, you'd have a neck of roughly 0.299" diameter for 0.190" and then a step down to a neck of 0.291" for 0.070" IF he didn't set the barrel back. Based off those numbers, if he set back your barrel 0.200" the shoulder would clean up the larger diameter neck of the PRC chamber and it should be good. Maybe he did that and your necks are just spec'd too small and you'll need to neck turn your brass to function.

Sizing brass doesn't reduce neck diameter. There is a certain amount of brass in a neck and it needs to fit around a bullet. you need to turn (skim thin layers of brass off) necks to reduce brass thickness. You need clearance between brass and chamber so if you have a 0.291 chamber, you probably want 0.287 loaded neck diamter or less. Larger may chamber and function but getting too tight is not ideal and can cause issues. Neck turning is a pain in the ass and I'd never spec a chamber that requires it if avoidable.
 
Thank you. First time I’ve ever been this organized.

After that was done I loaded a bunch of 223 with CCI 450s. Both in Varget and 8208. Planning to shoot them next weekend.

The Varget shoots great with CCI 400s @ 22.0 grains ( 25 shot group was 1.43”) but was averaging 2502, and I was hoping a bit more velocity.
FYI, 24gr of Varget gives me a high 2600fps average with a 75bthp and a 17" barrel.
 
Finally caved and picked up a couple hundred 77 TMK's ! I've been way more than happy with the 75 Amax in this 1:8" Pacnor 223 AI. Inquiring minds and all... grin
Lapua once fired brass AI formed, Rem 7.5 BR, H4895 and 8208. See where we land.

 
While I was at the bench I also threw together some more 75 Amax and Lapua fire form loads while burning through some of my less favorite powder and primer choices.

 
I got a piece of ultra mag brass stuck in my sizing die, and pulled the extractor lip off the case head. New dies need lube too
I also got a piece of ultra mag stuck; lubed but not enough. Hopefully yours isn't as bad as mine. Brass is primed and the expander ball stripped so it's also stuck in the case :rolleyes:
 
Shot the XBR in the 223 this morning and it definitely shows more promise than the Varget is with the 77TMKs. I’m just waiting on more bullets to come in so I can continue going up

I blew a couple of shots out otherwise a few of those groups would have been fantastic
 

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Couldn't help my self !! Decided the 223AI could use a trim.



I cram a Q tip in the bore to keep crap out.


Mill Bastard, Case chamfer tool, 400 grit and 0000 steel wool to love her up some.

 
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