Ramshot TAC 5.56 load data - GunsAndGears版

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GunsAndGears版 - Ramshot TAC 5.56 load data

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f****a
发帖数: 4708

Caliber: 5.56mmx45NATO. (.223 Remington)
Pressure spec: MIL <58700 Psi “Case mouth” = <62000 Psi chamber
Barrel length: 20” (For 16” barrel reduce velocities by 5 to 6% ca 150 Fps)
Powder: Ramshot – TAC.
Bullet weight: 55 grain FMJ (M-193).
Start load: 25.0 grains (2925 – 3025 Ft/p/sec)
Maximum load: 27.8 grains (3300 – 3400 Ft/p/sec). <62000 Psi
Bullet weight: 62 grain FMJ (M-855).
Start load: 24.0 grains (2850 – 2950 Ft/p/sec)
Maximum load: 26.7 grains (3100 – 3200 Ft/p/sec). <62000 Psi
Bullet weight: 68 grain HP.
Start load: 23.5 grains (2750 – 2850 Ft/p/sec)
Maximum load: 26.2 grains (3075 – 3175 Ft/p/sec). <62000 Psi
Bullet weight: 77 grain HP.
Start load: 22.1 grains (2525 – 2625 Ft/p/sec)
Maximum load: 24.5 grains (2750 – 2850 Ft/p/sec). <62000 Psi
source:
http://www.ar15.com/forums/t_6_42/272135_.html

f****a
发帖数: 4708

Appliocation: Bolt Action Rifles and Semi Auto Weapons rated for the latest
NATO/MIL ammunition.
grain, make, type, start, fps, max, fps, psi, COL
TAC 62 MIL M855 23.6 2,940 26.2 3,219 62,350 2.260
TAC 62 MIL FMJ 23.3 2,935 25.9 3,217 61,977 2.223
TAC 62 BAR TSX 24.1 2,965 26.7 3,244 61,196 2.255
TAC 65 SIE SBT 23.7 2,922 26.3 3,184 62,202 2.210
TAC 69 SIE HPBT 22.9 2,775 25.4 3,049 61,607 2.260
TAC 70 BAR TSX 23.1 2,796 25.6 3,037 61,273 2.260
TAC 75 HDY HPBT 23.2 2,738 25.8 2,994 62,145 2.260
TAC 77 SIE HPBT 22.3 2,648 24.8 2,902 61,500 2.260
TAC 80 SIE HPBT 23.2 2,638 25.8 2,903 61,307 2.260
TAC 90 SIE HPBT 21.8 2,436 24.2 2,688 61,794 2.260

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