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Today on Kentucky Ballistics we perform a ballistic gel test with 357 Sig and 357 Magnum. I hope you enjoy the video and thanks for watching!

Ammunition used in today’s video.

Underwood Ammo 357 Sig 125 Grain Bonded Jacketed Hollow Point
Muzzle Velocity – 1475 fps
Muzzle Energy – 604 ft. lbs.

Underwood Ammo 357 Sig 147 Grain XTP Jacketed Hollow Point
Muzzle Velocity – 1250 fps
Muzzle Energy – 510 ft. lbs.

Underwood Ammo 357 Magnum 125 Grain XTP Jacketed Hollow Point
Muzzle Velocity – 1700 fps
Muzzle Energy – 802 ft. lbs.

Underwood Ammo 357 Magnum 158 Grain Bonded Jacketed Hollow Point
Muzzle Velocity – 1500 fps
Muzzle Energy – 789 ft. lbs.


Chronograph Readings


Glock Gen 4 Model 31 357 Sig

Barrel Length – 4.49 in.

Underwood Ammo 357 Sig 125 Grain Bonded Jacketed Hollow Point

Muzzle Velocity
Shot 1 – 1418 fps
Shot 2 – 1415 fps
Shot 3 – 1419 fps
Shot 4 – 1415 fps
Average – 1416 fps
Muzzle Energy - 556 ft. lbs.

Ballistic Gel Penetration (10% Gel) – 14.50 inches

Remaining Bullet Weight - 124.5 grains

Bullet Expansion – Measurement 1 - .636 in
Measurement 2 - .673 in
Measurement 3 - .650 in


Underwood Ammo 357 Sig 147 Grain XTP Jacketed Hollow Point

Muzzle Velocity
Shot 1 – 1217 fps
Shot 2 – 1248 fps
Shot 3 – 1231 fps
Shot 4 – 1214 fps
Average – 1227 fps
Muzzle Energy - 491 ft. lbs.

Ballistic Gel Penetration (10% Gel) – 17.0 inches

Remaining Bullet Weight - 125.2 grains

Bullet Expansion – Measurement 1 - .555 in
Measurement 2 - .566 in
Measurement 3 - .529 in


Smith & Wesson 686 357 Magnum

Barrel Length – 4.0 in.

Underwood Ammo 357 Magnum 125 Grain XTP Jacketed Hollow Point

Muzzle Velocity
Shot 1 – 1574 fps
Shot 2 – 1642 fps
Shot 3 – 1600 fps
Shot 4 – 1577 fps
Average – 1598 fps
Muzzle Energy - 709 ft. lbs.

Ballistic Gel Penetration (10% Gel) – 16.0 inches

Remaining Bullet Weight - 110.0 grains

Bullet Expansion – Measurement 1 - .556 in
Measurement 2 - .537 in
Measurement 3 - .554 in


Underwood Ammo 357 Magnum 158 Grain Bonded Jacketed Hollow Point

Muzzle Velocity
Shot 1 – 1438 fps
Shot 2 – 1424 fps
Shot 3 – 1441 fps
Shot 4 – 1433 fps
Average – 1434 fps
Muzzle Energy - 721 ft. lbs.

Ballistic Gel Penetration (10% Gel) – 25.50 inches

Remaining Bullet Weight - 158.3 grains

Bullet Expansion – Measurement 1 - .536 in
Measurement 2 - .522 in
Measurement 3 - .529 in


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