LMT 12.5” Mid Gas Barrel Velocity Request

[Jdfd556]

I’m looking for anyone who has chrono’d the LMT 12.5” Mid Gas barrel (Specwar barrel). I’m hoping someone has M193, Black Hills Mk 262 Mod 1, and Black Hills 77gr TMK data. Any help would be greatly appreciated thanks!

 

[bfoosh006]

While this testing doesn't use your specific barrel... you might find the info useful.

https://www.ar15.com/forums/ar-15/S...-10-5-11-5-12-5-and-14-5-ALL-DONE-/16-714088/

 

[corey4]

heres some testing i did as another data point. i also did a triarc 12.5 but can't find the data. ill look around.

 

[db2000]

Not the specific requested barrel but since no one has offered that exact data, I’ll too offer something similar.
Data from a 12.5 BA Govt profile CL

59F 49% 30.18 in

SMK 77 gr HPBT
Rx 15 24 gr
Fed 205M
BTO 1.852
COL 1.750
COAL 2.255
CBP chrono 6ft from muzzle
2410, 2379

Berger 77 gr HPBT
Rx 15 24.1 gr
Fed 205M
BTO 1.843
COL 1.750
COAL 2.240
CBP chrono 6ft from muzzle
2385, 2383, 2403, 2354

Berger 77 gr OTM Tactical
H4895 23.4 gr
Fed 205M
BTO 1.843
COL 1.750
COAL 2.260
CBP chrono 6ft from muzzle
2423, 2404

Different day:
76F 26% 29.86 in

SMK 77 gr HPBT
LC brass
H4895 23.8 gr
Fed 205M
BTO 1.852
COL 1.750
COAL 2.260
Magneto V3
2566, 2603, 2540, 2562, 2579
2433, 2560, 2544, 2483

 

[Jdfd556]

Thank you all this is greatly appreciated!

 

[PBWalsh]

My 12.5” mid gas Triarc throws IMI 77 SMK at ~2450 fps.