Looks like you are having fun shooting and collecting data. The more I load the more I realize that there are so many variables that combinations that shouldn't work often work just fine.
I used to be bothered by short magazines and long bullets WITH throats that were untouchable.
I also used to dismiss the idea of changing seating depth as the last tweak to obtain accuracy that Rick Jamison suggested a few decades ago.
I have never experienced any issue with elevation changing pressures. Also have never experienced issues with deeply seated bullets other than occasional poor accuracy.
I look at each rifle as an individual loading problem. I will load up the bullet and give it a try regardless of magazine length or distance to throat.
Many hunting rifles WILL shoot fantastic groups with many compromises. As long as the rifle is sound I feel it can be made to shoot.
Many here will attest to the finicky nature of VLDs. Most think the bullets need to be close or into the rifling to work. Not true. Even Berger makes suggestions to try various seating depths. Personal experience with a few 257 weatherbys and the 115 VLD have changed my mind on the distance to throat. Hybrids are so easy to load that I never bother to measure jump to rifling just seat to feed from mag box and work up a load.
I put together what might be considered an impossible combination for my friend's 300 WSM Browning A-bolt. Mag box was 2.8", and the 230 gr hybrid. No powder space right? Well this rifle shoots the 230s quite well from a 7 1/4 lb Browning A-bolt! RL-17 lit it up for a vel of 2725 from its short barrel. see pic.
The more I shoot the more I realize there are many combinations that many say "won't work" but do in fact work just fine. Short necked cartridges, long jump to rifling, no powder space, short barrels, and heavily worn barrels WILL SHOOT. After 30 yrs of reloading I can only conclude that a weird combination is worth a try.