Well, I actually measured against a CCI primer. It might even have been a CCI 400 SRP. Maybe that's the difference. It measured a fraction of a thous smaller in diameter than the CCI. (My caliper only measures the nearest half a thou, and it was half a thou smaller on the few I measured.) And the cup, not feet, was longer. I can't recall how much, but it want to say it was by 2 thou. I could actually tell by looking at them side-by-side without the calipers.
However, you CAN see the more rounded cup in your pics. I believe that makes the Tula primer start to flatten/crush easier than the other primers I've used, regardless of relative cup length. So if you have a tight enough primer pocket, you could conceivably start to crush the cup before the primer seats all the way. Or if you seat too deep, you could also crush a primer.
After reading over and over how you can seat a primer too shallow but not too deep, I always erred on the deep side. That was until I had 2 failures to ignite with a Glock, using Tulammo primers. When I measuered the depth of the badly flattened primers, I measured 0.015"! Oops! I happened to prime this batch as the first batch after doing several hundred CCI SRP's which are a lot harder to seat; I guess I was a bit heavy handed on the lever.
Aside from paying more attention to the seating feel, I also concaved the priming arm on my press just a hair, to hold the Tula primers with more support.
Now, the only gun that doesn't like 'em is my Ruger GP100 in DA mode. I get maybe 1% failures there. Everything else pops them without fail.