Just measured both bullets, for curiosity's sake.

Measured 3 of each and the average lengths are:

- 105gr A-Max 1.230"
- 105gr BTHP Match 1.222"

The AM box specifies at least a 9" twist, while the HPBT doesn't mention any minimum (probably because most factory .243 barrels are 10" twist, and they don't see a problem there).