APL-G35

It sounds like you have everything setup correctly. What powder and charge weight are you running? Also have you checked length after seating then again after crimp to see if the crimp station is causing an issue? Check lengths after each station. Another thing is you said you are hand seating, this could be another variable. Even though I don't use a bullet feeder I still use the feeding die and handload into the top of the die. That has helped my consistency as well.

All mixed head stamps won't give me that kind of OAL variance you describe. The only time I ran into an issue like that was a slow lot of SWMP I had to fill cases so full some loads wouldn't compress well and OAL changed wildly like that. Outside of that all load to +/-.003

10 lb recoil spring in an open gun is terrible. I run mine on a 7 lb variable and it shoots way better than with a heavier spring.

Check out Range Panda. He was making some mounts earlier.

Those pictures look just like what i get with my gun as well. I'm loading 9.9 of AA7 at 1.165 it looks like that after 300 or so rounds

EGW HD Doesn't really require much tension to run. I would set it up on the looser end where it just takes a few shakes to rattle a round out. Take it to the range and shoot it for function. Single load a round and drop a mag. Fire a round and see if it ejects normally while unsuported by having a round below it. If it does, that's usually enough extractor tension.

Your story isn't really adding up. A gun .0005 -.001 "out of battery" would still fire. Also that much wouldn't require a push into battery let alone be noticeable enough to cause any further attention. If you are having to push it into battery its got to be .050 to .100 from chambering, which could be a number of issues.

Been using SPP in 9 major with HS6 and Accurate 7 without issues.

Wiha bits have always been very good quality

We the same lol

accurate 7 is what you want. Gassy, recommended by MPA. It's dirty but meters consistent and works very well.

S3 is super aggressive. I think it's the most aggressive texture I've held.

Vantage Reloading makes a 9 major load as well

What make of barrel?