My wife has taken two elk with a 7-08ai, one a little over 300 yds with a 140 gr TSX, second was around 400 yds with a 120 gr TTSX. MV was around 2940 fps with the 140, and around 3100 fps with the 120 gr bullet. Bullet performance was very good in both cases, good expansion and damage, neither was recovered.
Not exactly a large sample size, but I would be very confident with a TTSX of 120 or 140 gr out of a 7-08 on elk out to 400 or so yds.
Great cartridge choice by the way.
