150 gr of BlackHorn209 in a TC triumph Dont try it
12-22-2010 | 06:42 AM
#21
Fork Horn
Joined: Dec 2010
Posts: 127
Likes: 0
From: Chillicothe, Ohio
I just got off the phone with Thompson Center customer service and they said 150 grains of loose powder, with the exception of Blackhorn 209. The rep said " Do not use more than 120 grains of Blackhorn 209 in any of the T/C muzzleloaders, and do not use it at all in the Black Diamond".
Last edited by Michael396; 12-22-2010 at 06:45 AM.
12-22-2010 | 07:12 AM
#22
Nontypical Buck
Joined: Mar 2009
Posts: 3,926
Likes: 0
From: Saxonburg Pa
My Triumph shoots exceptional with 130grns by volume with a 250grn bullet. It also shoots exceptional with 115grns by volume with a 250grn bullet.
BTW- What some people do is not always the right thing to do. You can't go wrong following the manufactures reccomendations.
BTW- What some people do is not always the right thing to do. You can't go wrong following the manufactures reccomendations.
12-22-2010 | 08:01 AM
#23
Boone & Crockett
Joined: Aug 2004
Posts: 11,703
Likes: 0
From: Idaho
12-22-2010 | 10:36 AM
#25
Nontypical Buck
Joined: Mar 2009
Posts: 3,926
Likes: 0
From: Saxonburg Pa
Right now i'm not convinced he's burning the whole 150grns of BH209 in a 50cal ML. I really dont think he is. If i'm correct he's going to get inconsistent burn rates. If he dropped his load to 130grns, i bet his group size would be cut in half. The reason would be, he then would have a consistent burn rate of the powder. This is all my in my opinion only.
12-22-2010 | 10:54 AM
#26
Boone & Crockett
Joined: Aug 2004
Posts: 11,703
Likes: 0
From: Idaho
Uall
Just remember that Grouse's load of 130 grains of BH is still greater than TC suggests as the max load in any TC. Even though the pressure created by 130 grains is less than T7 with a 300 grain bullet and below. As you go up in projectile weight the pressure spike also rises very rapidly with BH.
TC does say 150 grain of Black Powder is max. But uall remember that T7 is rated 15% hotter than BP or Pyrodex. BH is also considered to be 15% and can get much greater as the projectile weight goes up.
Just remember that Grouse's load of 130 grains of BH is still greater than TC suggests as the max load in any TC. Even though the pressure created by 130 grains is less than T7 with a 300 grain bullet and below. As you go up in projectile weight the pressure spike also rises very rapidly with BH.
TC does say 150 grain of Black Powder is max. But uall remember that T7 is rated 15% hotter than BP or Pyrodex. BH is also considered to be 15% and can get much greater as the projectile weight goes up.
Last edited by sabotloader; 12-22-2010 at 12:28 PM.
12-22-2010 | 12:11 PM
#27
Nontypical Buck
Joined: Dec 2009
Posts: 2,496
Likes: 0
From: Yucca Valley,Ca
Uall
Just remember that Grouse's load of 130 grains of BH is still greater than TC suggests as the max load in any TC. Even though the pressure created by 130 grains is less than T7 with a 300 grain bullet and below. As you go up in projectile weight the pressure spike also rises very rapidly with BH.
Just remember that Grouse's load of 130 grains of BH is still greater than TC suggests as the max load in any TC. Even though the pressure created by 130 grains is less than T7 with a 300 grain bullet and below. As you go up in projectile weight the pressure spike also rises very rapidly with BH.
12-22-2010 | 12:44 PM
#28
Giant Nontypical
Joined: Nov 2005
Posts: 6,585
Likes: 0
cayugad
Remember the gun makers & powder makers have to set the max limits for the weakest ***** gun on the market. So there is a considerable safety factor on the better guns. But a 300 gr bullet with 150 gr of Blackhorn is way into the dangerous pressure range with any muzzle loader. I really don't think any one that can not check the pressure should go beyond the normal max limits because there are no signs of pressure that most would recognize before disaster strikes. I wonder how many of the people realize that over stressing stretches the barrel material and if it is done enough it may crystallize and break wide open.
It is hard to establish a good enough understanding with some of these people to keep them out of trouble.
Do you know how much safety factor is allowed? I do know they won't tell when you ask over the phone.
Remember the gun makers & powder makers have to set the max limits for the weakest ***** gun on the market. So there is a considerable safety factor on the better guns. But a 300 gr bullet with 150 gr of Blackhorn is way into the dangerous pressure range with any muzzle loader. I really don't think any one that can not check the pressure should go beyond the normal max limits because there are no signs of pressure that most would recognize before disaster strikes. I wonder how many of the people realize that over stressing stretches the barrel material and if it is done enough it may crystallize and break wide open.
It is hard to establish a good enough understanding with some of these people to keep them out of trouble.
Do you know how much safety factor is allowed? I do know they won't tell when you ask over the phone.
12-22-2010 | 04:45 PM
#30
Giant Nontypical
Joined: Mar 2010
Posts: 5,612
Likes: 0
If you want to shoot 150gr of T7, get a 52cal LRH with the powerstem breach plug and a 375gr RedHot.....and hold on tight. 
Or you can use the Lehigh NFPJ breachplug and 120gr of BH209 and get about the same fps and do it more safely.
Ive shot 120gr BH209 and a 54x50-385gr bullet....it is pretty accurate but not much fun. Recoil is near 458 WinMag levels.
Or you can use the Lehigh NFPJ breachplug and 120gr of BH209 and get about the same fps and do it more safely.
Ive shot 120gr BH209 and a 54x50-385gr bullet....it is pretty accurate but not much fun. Recoil is near 458 WinMag levels.
