Test Gun: Sig P229, Kahr MK9.
Barrel length: 3.9, 3 inches.
Ammunition: Federal 9mm 147gr HST.
Test media: 10% Clear Ballistics Gel.
Distance: 10 feet.
Chronograph: PACT 1 XP with inferred sky screens.
Five shot velocity average: 967, 916fps
Gel Temperature 71 degrees.
This is the fourth installment and probably last with the 9mm HST line. Here is a link to the other 9mm HST rounds I tested.
I got an average velocity of 967fps out of the P229 with a high of 975fps and a low of 953fps.
I switch back to my Kahr for the short barrel testing and got an average velocity of 916fps with a high of 929fps and a low of 893fps.
In the bare gel, out the P229 the first round had a velocity of 966fps and penetrated to 15.25 inches and had a recovered diameter of .67 inches. Round two hit at a velocity of 976fps expanded to .65 inches and also penetrated to 15.25 inches.
In heaving clothing covered gel, the first round had a velocity of 976fps, penetrated to 19 inches and expanded to .65 inches. The second round had a velocity of 962fps expanded to .62 inches and penetrated to 16.25 inches.
Out of the Kahr in the bare gel, the first round hit at a velocity of 922fps, penetrated to 16.25 inches and expanded to .65 inches. round two traveled at a velocity of 914fps, also penetrated to 16.25 inches and expanded to .63 inches.