[Brian Pfleuger]

You need to compare the same barrel lengths.

From DoubleTaps site:

357Sig

3.5" barrel - 1415fps
4.5" barrel - 1525fps

Caliber : .357 Sig

Bullet : 125gr. Bonded Defense™ JHP

Ballistics : 1450fps / 584 ft. lbs. 4"bbl

40SW

Caliber : .40 S&W

Bullet : 125gr. Barnes TAC-XP Lead Free

Ballistics : 125gr. @ 1390fps / 536 ft/lbs- Glock 23 (4.0"bbl)

1295fps 468 ft/lbs from a 3.5"bbl.

1445fps 580 ft/lbs from a 4.5"bbl.


4" Barrels:
Sig 1,450fps, 584 ft/lbs
40 1,390, 536 ft/lbs

Sig wins by 60fps, 48 ft/lbs, not really significant, though it is nearly 10% more energy.

4.5" Barrels:
Sig 1,525fps, 645 ft/lbs
40SW 1445fps, 580 ft/lbs

Sig wins by 80fps, 65 ft/lbs, over 10%.