COMPLETE INFORMATION BELOW:
Hornady
.223 55gr
TAP URBAN Test Filmed on Same Day:
https://youtu.be/7PU_jo2A7hc
Quick Links:
Equipment & Conditions: 0:15
55gr Shooting: 0:30
55gr
Results: 3:50
62gr Shooting: 4:00
62gr Results: 7:10
55gr & 62gr Results
Together: 7:25
Velocity &
Energy Graphs: 7:55
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Atmospheric Conditions:
Altitude: 4450'
MSL (
Above Sea Level)
Temperature: 75F/24C
Actual Pressure: 25.51inHg
Humidity: 40%
Chronograph:
Competition Electronics Pro
Chrono Digital
New
Battery
Measured 10 feet from Muzzle
10-round shot strings
Ammunition:
IMI 5.56 NATO - 55gr
FMJ Ball -
M193
IMI 5.56 NATO - 62gr FMJ
Penetrator -
M855 SS109
Barrels:
7.5"
DPMS Kitty Kat - 1/9"
Twist -
Steel Chrome Lined
10.5" Noveske - 1/7" Twist -
Stainless Steel *Polygonal Rifling*
11" CZ
Bren - 1/9" Twist - Steel Chrome Lined *
Piston Gas System*
16.5"
Stag Model 3 - 1/9" Twist - Steel Chrome Lined
18" Stag Model 3G - 1/8" Twist - Stainless Steel
20" Stag Model 4 - 1/9" Twist - Steel Chrome Lined
24"
Bushmaster Varminter - 1/9" Twist - Stainless Steel
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IMI 55gr M193 Results: 3:50
7.5" DPMS Kitty Kat
Average Velocity (fps):
2418
Average Energy (ft/lb): 714
Standard Deviation (fps): 24
10.5" Noveske
Average Velocity (fps): 2878
Average Energy (ft/lb): 1011
Standard Deviation (fps): 33
11"
CZ 805 Bren
Average Velocity (fps):
2776
Average Energy (ft/lb): 941
Standard Deviation (fps): 35
16.5" Stag Model 3
Average Velocity (fps): 3188
Average Energy (ft/lb): 1241
Standard Deviation (fps): 34
18" Stag Model 3G
Average Velocity (fps): 3310
Average Energy (ft/lb): 1338
Standard Deviation (fps): 32
20" Stag Model 4
Average Velocity (fps): 3324
Average Energy (ft/lb):
1349
Standard Deviation (fps): 26
24" Bushmaster Varminter
Average Velocity (fps): 3492
Average Energy (ft/lb): 1489
Standard Deviation (fps): 28
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IMI 62gr M855 Results: 7:10
7.5" DPMS Kitty Kat
Average Velocity (fps):
2288
Average Energy (ft/lb): 721
Standard Deviation (fps): 16
10.5" Noveske
Average Velocity (fps): 2673
Average Energy (ft/lb): 983
Standard Deviation (fps): 21
11" CZ 805 Bren
Average Velocity (fps): 2691
Average Energy (ft/lb): 997
Standard Deviation (fps): 18
16.5" Stag Model 3
Average Velocity (fps):
2983
Average Energy (ft/lb): 1225
Standard Deviation (fps): 22
18" Stag Model 3G
Average Velocity (fps): 3091
Average Energy (ft/lb): 1315
Standard Deviation (fps): 24
20" Stag Model 4
Average Velocity (fps): 3116
Average Energy (ft/lb): 1336
Standard Deviation (fps): 15
24" Bushmaster Varminter
Average Velocity (fps): 3238
Average Energy (ft/lb): 1443
Standard Deviation (fps): 21
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Notes:
*All rifles were cleaned before the test.
*All rifles had three rounds of 55gr FMJ fired as warm up.
*The chronograph had a new battery.
*Did my best to hold the muzzles all in the same place :/
*
Polygonal rifling on 10.5" barrel gives slight
FPS boost.
*CZ Bren 11" pistol has a piston gas operating system, unlike the direct impingement system of all the other uppers, I feel this affects the velocity enough to mention, though not enough to completely remove the firearm from my test/video. I had it there, and fired the ammo through it, so might as well include the data even if it doesn't directly correlate to the rest of the barrel lengths.
Thanks for watching!
- published: 13 Aug 2016
- views: 51