New TMK announced

[grfox92]

Just take the 6gt for what it is, near 6br accuracy and super easy load development, but a lil slower mv VS the creed/xc/x47. The decision a guy needs to make is barrel length, and velocity desired with X bullet, this tells you case size needed.

For reference a 21in 6gt will still run heavy for cal bullets at 2800+ mv, which is where 18" 6cm usually run. It's a very efficient case, especially in shorter barrels. 21 is the shortest I've gone with one.

Any experience with 6 ARC? How does it compare to the BR and GT?

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[pathnz]

18 inch GT you get 2750-2800 with 105-108-109 easily with Varget & H4350 book loads

 

[KyleR1985]

Any experience with 6 ARC? How does it compare to the BR and GT?

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For reference, 95tmk’s:

16” 6x45 - 2550-2600
16” 6ARC - 2650-2700
16” 6 dasher - 2750-2800
16” 6GT - NA for me
16” 6creed 2950-3000

My 6 dasher shoots 108’s 2650-2700. I think you could expect 2750-2800 out of a 16” 6GT with 107tmk’s

 

[swavescatter]

I was hoping for a 140/145ish TMK for my 6.5 Creed, but the 22/6mm offerings will be great (hopefully).

 

[Thegman]

I asked AI to compare the existing TMK line and guess at the length and BC of an 88 and it guessed
Bc: .510-.545
Length: 1.19-1.25”

Berger suggests stability :
1.28 w/ 1:8.
1.46 w 1:7.5
1.67 W 1:7

59* and 1000’ 3150 fps

You’d need to go to 6,800’ for 1:8 to get above 1.5 sg


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Maybe we should do an over-under? Yesterday I was WAG-ing a ~ .5 G1 for the 88s. Just basing that on 77TMK compared to 75/80 ELDM. They could easily make it higher, but it seems doing too much of that might mess with its terminal performance. Better not kill the goose that lays the golden eggs.

 

[amassi]

I was hoping for a 140/145ish TMK for my 6.5 Creed, but the 22/6mm offerings will be great (hopefully).

They made a 140 TMK and sold it to mil or LEO. So I was a little surprised it wasn’t part of this drop


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[ddowning]

I'm an engineer who's learning to shoot -- You're probably three levels above my pay grade on this

My thinking was: shorter case allows longer bullet in same COL & mags. Bore rider allows potentially higher MVs versus a super long bearing surface.

LRI tried bore rider throats in the 6 Comp Match many moons ago and decided to back away from it.

 

[TimberHunter]

For reference, 95tmk’s:

16” 6x45 - 2550-2600
16” 6ARC - 2650-2700
16” 6 dasher - 2750-2800
16” 6GT - NA for me
16” 6creed 2950-3000

My 6 dasher shoots 108’s 2650-2700. I think you could expect 2750-2800 out of a 16” 6GT with 107tmk’s

Curious what powder you were able to get the 6ARC vel with? From what I’ve seen the temp stable powders are a bit slow


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