Test Gun: Sig P229.
Barrel length: 3.9 inches.
Ammunition: Sig Sauer .357 Sig 125gr V-Crown
Test media: 10% Clear Ballistics Gel. Distance: 10 feet. Chronograph: Caldwell Ballistic Precision Chronograph G2. Five shot velocity average: 1308fps
Gel Temperature 73 degrees.
With this round, I got an average 5 shot velocity of 1308fps with a high of 1319fps and a low of 1290fps.
The first round had an impact velocity of 1342fps and penetrated to 12 inches. Recovered diameter was .73 inches and weighted 124 grains. The second round also penetrated to 12 inches with an expansion of .71 inches. Recovered weight was 124.4 grains and the velocity was 1335fps.
In the heavy clothing covered gel, the chronograph didn’t read the velocity. The penetration was 16.5 inches with an expansion of .59 and weight of 124.6 grains. Round two’s velocity was 1316fps and penetrated to 19 inches. The weight of the projectile was 125.3 grains and diameter of .56 inches.