Sierra 107 TMK Load Data

[Ryan Avery]

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[YaakRiver]

Picked up some 107s at UM last month. Load dev starts today and I'll post data and outcomes.

 

[Matt5266]

Getting a box friday will post results soon as i get a chance to test them as well. really want these to shoot in my 18" Tikka 243 1:8 twist.

 

[mtnbound]

REPOSTING TO NEW THREAD.

107 TMKs, 2.90coal, 6CM, 16.5” PBB 7.5” twist, Hornady brass, Fed210. I will have to redo 4831SC as I forgot to turn on my chronograph. My old barrel liked H4350 but this one doesn’t seem to like it as much.

 

[Jmedin]

6 Dasher
20” barrel
107 TMK
30.5 Varget
1.745 CBTO
2710 FPS SD 6.7

 

[NoDakhunter]

View attachment 1052259
6 Dasher
107 TMK
30.5 Varget
1.745 CBTO
2710 FPS SD 6.7

Barrel length?

 

[Jmedin]

Barrel length?

Whoops 20”

 

[Plague]

Repost for this thread. Average muzzle velocity over 100 rounds with this load ended up being 2960 fps. 21” barrel 1:8 twist.

 

[sierracharlie338]

I can play. Loading these in my 20” GT.
Will add data as soon as I get some loaded and shot.

 

[JoeB]

6 Creed on the way planning to try TMK

 

[Lawnboi]

21” dasher, 120 fb, 7.5 twist
40k off jam as pictured below
31 grains of varget
Alpha brass
REM 7 1/2
2725 average

That’s a 10 shot group. I need the better cover for my OG 65, the light one just isn’t cutting it.

 

[sierracharlie338]

21” dasher, 120 fb, 7.5 twist
40k off jam as pictured below
31 grains of varget
Alpha brass
REM 7 1/2
2725 average

That’s a 10 shot group. I need the better cover for my OG 65, the light one just isn’t cutting it.


View attachment 1052651View attachment 1052652

Damn thing shoots. There’s no denying that!