bubbaactually it is correct. if you plan to use loose triple 7 or pyrodex 120 grains of loose triple7 or pyrodex is equivalent to 150 grains of pellets. Most gun manufacturers will say that in their info. In other words do not exceed 120 grains of loose powder.
I do not know where you are getting your information... but on page 51 of the Triumph manual it lists the max load as 150 grains FFG of Black Powder and or 3 50 grain Pellets. On page 50 it lists 150 grains of FFG powder for a 400 grain bullet in a TC Mag express sabot.
For Use With .50 Caliber
Thompson/Center Triumph™
Using Bullet & Sabot Listed
Use #209 Primer
.50 Caliber Rifle
Using Black Powder &
Mag Express™ Sabots
For Use
With Bullets
Weighing (Grains)
Black Powder
Charge (Grains)
Muzzle Velocity
(Feet Per Second)
Muzzle Energy
(Foot Pounds)
325 Grain
Bullet
100 grs. FFG 1451 F.P.S. 1520 Ft. Lbs.
120 grs. FFG 1555 F.P.S. 1745 Ft. Lbs.
150 grs. FFG 1710 F.P.S. 2110 Ft. Lbs.
400 Grain
Bullet
100 grs. FFG 1390 F.P.S. 1679 Ft. Lbs.
120 grs. FFG 1469 F.P.S. 1917 Ft. Lbs.
150 grs. FFG 1587 F.P.S. 2238 Ft. Lbs.
For Use With .50 Caliber
Thompson/Center Triumph™
Using Bullet & Sabot Listed
Use #209 Primer
.50 Caliber Rifle
Using 50 Gr. Equivalent Pyrodex®
Pellets & Shock Wave™ Bullets with
T/C Super Glide Sabots
For Use
With Bullets
Weighing (Grains)
Powder Charge
.50 caliber/50gr.
Pyrodex® Pellets
Muzzle Velocity
(Feet Per Second)
Muzzle Energy
(Foot Pounds)
250 Gr. Bullet
T/C Shock Wave™
in the
T/C Super Glide™
Sabot
2 Pellets 1863 F.P.S. 1927 Ft. Lbs.
3 Pellets 2197 F.P.S. 2680 Ft. Lbs.
300 Gr. Bullet
T/C Shock Wave™
in the
T/C Super Glide™
Sabot
2 Pellets 1729 F.P.S. 1992 Ft. Lbs.
3 Pellets 2036 F.P.S. 2762 Ft. Lbs.
Load Shown in Red is Maximum
For Use With .50 Caliber
Thompson/Center Triumph™
Using Bullet & Sabot Listed
Use #209 Primer
.50 Caliber Rifle
Using Black Powder &
Shock Wave™ Bullets with
T/C Super Glide™ Sabots
For Use
With Bullets
Weighing (Grains)
Black Powder
Charge (Grains)
Muzzle Velocity
(Feet Per Second)
Muzzle Energy
(Foot Pounds)
250 Gr. Bullet
T/C Shock
Wave™
in the
T/C Super
Glide™
Sabot
80 grs. FFG 1472 F.P.S. 1203 Ft. Lbs.
90 grs. FFG 1601 F.P.S. 1423 Ft. Lbs.
100 grs. FFG 1642 F.P.S. 1497 Ft. Lbs.
110 grs. FFG 1696 F.P.S. 1597 Ft. Lbs.
120 grs. FFG 1724 F.P.S. 1650 Ft. Lbs.
130 grs. FFG 1775 F.P.S. 1749 Ft. Lbs.
140 grs. FFG 1828 F.P.S. 1855 Ft. Lbs.
150 grs. FFG 1853 F.P.S. 1907 Ft. Lbs.
300 Gr. Bullet
T/C Shock
Wave™
in the
T/C Super
Glide™
Sabot
80 grs. FFG 1452 F.P.S. 1405 Ft. Lbs.
90 grs. FFG 1535 F.P.S. 1570 Ft. Lbs.
100 grs. FFG 1601 F.P.S. 1708 Ft. Lbs.
110 grs. FFG 1646 F.P.S. 1805 Ft. Lbs.
120 grs. FFG 1667 F.P.S. 1852 Ft. Lbs.
130 grs. FFG 1693 F.P.S. 1910 Ft. Lbs.
140 grs. FFG 1714 F.P.S. 1957 Ft. Lbs.
150 grs. FFG 1758 F.P.S. 2015 Ft. Lbs.
Load Shown in Red is Maximum
The reference to 120 grains is when talking about T7-2f loose powder, wich is equal to 150 grains of loose BP or 3 50 grain pellets..
You can download any of this at:
http://www.tcarms.com/manuals/Here is a tablew that might interest you
150 grains of T7 pellets is equal to about 150 grains of loose BP or Pyro
150 grains of T7 pellets is equal to about 85 grains of loose T7-2f (TYPO, should read 100 grains of T7 pellets is equal to about 85 grains of loose T7-2F, instead of 150)
The Max load for an Encore is 150 grains of BP or Pyro Loose powder
The max load of T7 in a TC Encore is about 127 grain of loose T7-2f - because you need to reduce T7 by volume about 15% to equal BP or Pyro
100 grains of T7 by volume weighs approximately 77.7 grains
Load Shown in Red is Maximum