Sierra 195 TMK load data for .308

[jimmyjam]

Looking for competition load for the Sierra 195 TMK’s for .308. Need at least a starting load please. Any help appreciate.

 

[rijndael]

43.6 of Varget loaded to about 2.880". This gun had a long throat, it was the longest I could go and mag feed.

 

[TimW]

From my load journal: (Haven't shot TMKs in at least 6 yrs.)

In my rifle they seemed to like a somewhat shorter jump range 0.010-0.020 vs .040-0.100.

195 TMK
Lapua Palma (necks turned to 0.013 for 0.0045 neck clearance)
Wolf SRP.
I tuned @ 0.012 jump (node 0.012-0.018)
Neck Tension 0.002

The easy button for powder is Varget 40-44 gr

 

[Straightshooter1]

From my load journal: (Haven't shot TMKs in at least 6 yrs.)

In my rifle they seemed to like a somewhat shorter jump range 0.010-0.020 vs .040-0.100.

195 TMK
Lapua Palma (necks turned to 0.013 for 0.0045 neck clearance)
Wolf SRP.
I tuned @ 0.012 jump (node 0.012-0.018)
Neck Tension 0.002

The easy button for powder is Varget 40-44 gr

You realize that a .012 jump could mean the cartridge COAL could be 2.868 or 2.968 or whatever depending on the length of the freebore?

 

[TimW]

Of course. lol But unless he has my same freebore, throat erosion, or is he staying mag length vs single load its sort of moot. I did not give my powder charge either. And after all those legitimate but actually BS excuses there is also the small issue of I smudged the heck out of the ink on the page and I can not make out the COAL CBTO numbers for the load.

You just had to go and call me on it.

Seems even a small amount boretech Cu on a finger is very effective on dissolving ink.

 

[D-4297]

Started using them for practice , to save my Berger 185's , and they are a okay bullet for that use , in my mind . Saves on the bucks , too .
Understand the following . I shoot them from a Kelby Panda F-TR rifle , with a 30" Bartlein , 1-10 , and a 2013 FTR Chamber .
Brass : Lapua SRP
Primer : Rem 7-1/2 BR
Seating is .005 off touch .
Powder ; N-150
43gr load ....suggest starting at 42.5gr
Velocity runs at : 2660 - 2670
This load may be slower in your area , due to temps and humidity . The given velocity was shot at 100 degrees / 18% Humidity at Ben Avery , Phoenix yesterday .

 

[Monte F]

Started using them for practice , to save my Berger 185's , and they are a okay bullet for that use , in my mind . Saves on the bucks , too .
Understand the following . I shoot them from a Kelby Panda F-TR rifle , with a 30" Bartlein , 1-10 , and a 2013 FTR Chamber .
Brass : Lapua SRP
Primer : Rem 7-1/2 BR
Seating is .005 off touch .
Powder ; N-150
43gr load ....suggest starting at 42.5gr
Velocity runs at : 2660 - 2670
This load may be slower in your area , due to temps and humidity . The given velocity was shot at 100 degrees / 18% Humidity at Ben Avery , Phoenix yesterday .

Going to run them tomorrow for our NV LR Championship match. Had good groups in my Savage with them, Will see how they do in my Panda F-TR rifle using Varget with the same predicted velocity as you are seeing. Trying to save the Juggernauts and 200.20x for bigger matches (SWN, Cal state).