Sierra .25 cal 135gr TMK Load Data

[KyleR1985]

Starting a thread on the 135 .25 cal TMK.

 

[Q_Sertorius]

I’m looking forward to getting mine. I need to get the trigger fixed on the .25-06, but I will do some load testing.

 

[eoperator]

25wsm ~mild load n570 135tmk 3070fps

10rnd group ended up about 1.1" , very similar velocity/dispersion as 133eh 134eldm.

To me the green tip seems very large, they must have used the same tip as 153tmk.

153tmk-135tmk-116tmk-134eldm

 

[doc holiday13]

I'm curious if their BC is correct. The 135 is list as g7 of .307 verses hornadys 134 ELDM boasting a g7 of .325

I'll be shooting these side by side

 

[eoperator]

I'm curious if their BC is correct. The 135 is list as g7 of .307 verses hornadys 134 ELDM boasting a g7 of .325

I'll be shooting these side by side

I geussing the "bump" at tip/meplat junction is the reason for lower bc

 

[43.6N]

25wsm ~mild load n570 135tmk 3070fps

10rnd group ended up about 1.1" , very similar velocity/dispersion as 133eh 134eldm.

To me the green tip seems very large, they must have used the same tip as 153tmk.

153tmk-135tmk-116tmk-134eldmView attachment 1080715

That tip size looks enormous and awesome.
I’d bet money it expands violently and reliably well below 1800fps. Possibly 15-1600fps?

 

[doc holiday13]

That tip size looks enormous and awesome.
I’d bet money it expands violently and reliably well below 1800fps. Possibly 15-1600fps?

You'll have to find deer out at 850ish yards or download the bullets to test for impact speeds below 1800fps. I'll get some deer put down in a few weeks with them. I have crop damage permit so summertime killing will happen with them