From my testing, the claymore appears to deal damage in the shape of an isosceles triangle. The damage is a constant 1300 throughout the triangle, so the in-game “1300 at 3m 350 at 6.5m” is bullshit; Claymore deals no damage outside 2-3m.
With the newly added 0.32 second detonation delay, the claymore can no longer cover the entirety of a doorway. From in game experience, it appears to cover less than half of a doorway now. This is because if an enemy is close enough to the claymore, he can just run straight through it taking no damage.
Depending on the exact amount of time it takes for a character to run through the detonation zone, it may be beneficial to place the claymore at an angle to enlarge the kill zone.
Knowing the detonation delay of 0.32 seconds and that sprinting player moves at 6.32m per second, we can calculate the distance a player can cover during the delay: 0.32 * 6.32 = ~2.02m, which means that a player can potentially spring right through the claymore without getting damaged, which is confirmed by in-game testing.