6mm GT case capacity

[JoeInTucson]

Good Afternoon,
So I am working with 6mm GT, new Peterson brass, and Hornady 65 Vmax bullets.
Just making up some quick sighters, not going to develop these for groups or anything like that.
Powder data from Hodgdon.
37.x is the starting load.
38.0 of Staball Match gives 100 pct. case fill.
The data says I can go to over 41 grains.
39.5 comes not quite to the top of the neck.
Have any of you played around with compressed loads in this cartridge?
Or is Peterson brass just thick-walled?
Thanks

 

[280ai]

Don't compress staball 38 is a good load we use 38.3 to 38.9 with 107 smk 108 eld and 115 dtac with 1/3 to 1/2 moa this will give you great barrel life

 

[Idaho-Lefty]

STAY at, 1/2 to, a Full grain Under ANY Max Loads with, Peterson Brass as,. It's, a tiny Bit,.. THICKER, brass.
You'll be able to put, a Little More Powder in Case, once "Fire formed" to, your Chamber.
It seems to "Work Harden" a Bit and I'm "Having to Anneal" after, the 3rd firing, on my 6.5 Creed Brass Not, a big Deal !
Can't tell, the difference, between Peterson and Lapua Brass for,.. Accuracy !
Quality, "Stuff" !

 

[Clancy]

Peterson GT brass has a capacity of 42.8 gr

 

[Clancy]

@Kracken McGraw I got my Peterson loaded up and it’s .268 loaded. I have a .274 no turn Manson reamer and .006 doesn’t scare me a bit. I’ll gurantee it shoots better than .003 would.

 

[Kracken McGraw]

@Kracken McGraw I got my Peterson loaded up and it’s .268 loaded. I have a .274 no turn Manson reamer and .006 doesn’t scare me a bit. I’ll gurantee it shoots better than .003 would.

Sounds like a winner to me. I never want to have to turn any necks.

 

[Sandbagger1]

39 gr of staball with 108 hybrid here

 

[thatguyshm]

I'm 39.1 with a 107

 

[JPB3]

still no Lapua ?

 

[Clancy]

still no Lapua ?

Yea! It came out back in October, January, February, April, May, end of June for sure, maybe by the end of August….

 

[Idaho-Lefty]

StaBall 65 in, a 6 MM or 6.5 Creed, seems to, Work best at,.. NEAR Max., chg's,.. IMO
And I use, the Heavier Bullets, in Both, Cal's with, StaBall 65.
I use it with, 95 to 108 grain Bullets in my 6 XC and 130 to 147 grain, Bullets in 6.5 Creed and It shoot's, TINY !
I Use both, Peterson and Lapua brass, in my 6.5 Creed and I CAN'T tell, the difference, in Accuracy

 

[Idaho-Lefty]

I'm 39.1 with a 107

Are you "Jamming",.. the 107's ??
I Shrunk my 6 XC Group's by almost, 50% when I started, slightly Jamming Them !
Reduce the Powder chg. If at, Max Pressure for,.. YOUR Rifle