Neck tension would be horizontal, pressure impacted from side to side (horizontally) with a case sitting on its rim. Often measured in thousands (and sometimes half that much). Basically, it's how much less than a loaded round measures.. Before and after seating a bullet. That's your neck tension. I'm sure Wikipedia says it in a more refined way, but that how I'd describe it.
Gripping surface, which I'd consider vertical, would be the "length" of the total area where neck tension gets applied, usually the whole neck, if the bottom of the bearing surface is set at the neck/shoulder junction. Kinda a term I coined to describe how much grip I can get on a bullet running a lower neck tension. I'm not big on heavy neck tension, as I rarely surpass the generic .002"
Thinner metals, regardless what they are, will grow or relocate easier than thicker ones. Any fool can see why you wouldn't want to get too happy with a case, particular something short necked like a 243.
If I'm not confident in my equipment, I won't shoot as well as if I were. It doesn't matter if I'm shooting coyotes or shooting in a match, the ammo has been perfected to the best of my abilities. It's the last thing that I would doubt in the whole setup.
I'll put my loaded ammunition up against just about anyone's. Im proud of everything I've learned so far, and look forward to learning anything new that I can. That's the ticket you see, never assume that you've got it down, because somewhere out there, someone is finding a better way to kick everyone's [beeep]. Better to give than to receive.
If you've got anymore to say, I'd suggest a PM, but don't expect it to go without a good old keyboard lashing.
Thanks for nothing.
