357 Sig vs 357 Magnum vs Ballistic Gel

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!

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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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