6 Major

[RonS]

Anyone out there shooting the 6 Major in a 8 twist? If so, what are you using? Bullets? Powder? Primers?

 

[Mulligan]

Is a 6 Major a Grinch of a different color?
CW

 

[jpjulian]

Is that a new IPSC caliber for hi-cap 2011's?

 

[Jon Leary]

Which loads have you tried so far?

 

[gunsandgunsmithing]

Is a 6 Major a Grinch of a different color?
CW

I think hes referring to a 6 Grendel.

 

[gunsandgunsmithing]

Anyone out there shooting the 6 Major in a 8 twist? If so, what are you using? Bullets? Powder? Primers?

You should be able to get several good ideas from 6 arc bolt gun data...assuming you aren't talking ar15. They're very similar in capacity and design.

 

[RonS]

I think hes referring to a 6 Grendel.

Yes, I"m looking for loads with the Berger 88gr HBC FB V bullet and N133.

 

[RonS]

You should be able to get several good ideas from 6 arc bolt gun data...assuming you aren't talking ar15. They're very similar in capacity and design.

Yes a bolt gun.

 

[T Kop]

I’ll be shooting 6Grendel shortly. Throated for 90-95g, I’m guessing 135-140, 8208,4895 range powder. If you try 133 with the 88s share the info.
Tim

 

[RonS]

I think hes referring to a 6 Grendel.

Aren't the dimension of the 6 Grendel and the 6 Major the same? Isn't the Grinch a 6 Grendel with a 40 degree shoulder?

 

[RonS]

I’ll be shooting 6Grendel shortly. Throated for 90-95g, I’m guessing 135-140, 8208,4895 range powder. If you try 133 with the 88s share the info.
Tim

I will as soon as I get a barrel... I have a 12 twist that a shoot 68gr bullets through, five rounds touching is normal using N133, H322 and LT-32

 

[RonS]

I’ll be shooting 6Grendel shortly. Throated for 90-95g, I’m guessing 135-140, 8208,4895 range powder. If you try 133 with the 88s share the info.
Tim

What twist will you be using?

 

[gunsandgunsmithing]

Aren't the dimension of the 6 Grendel and the 6 Major the same? Isn't the Grinch a 6 Grendel with a 40 degree shoulder?

Yes, a 6 Major is a 6 Grendel without any changes to the case body. Just a simple neck down to 6mm.

 

[gunsandgunsmithing]

Yes, I"m looking for loads with the Berger 88gr HBC FB V bullet and N133.

I think you'll get better speeds and accuracy from a little slower powders, ie 8208, h4895, n140 range. You might get good accuracy from 133 but it's a bit fast for the 87-95 class bullets IME. N135 would be as fast as I'd try, but ya don't know till ya try it either.

8208 is my go to powder with 80's. I can get a bit more speed from some others but that powder has consistently given me great accuracy. Benchmark is another one ya might try.

 

[T Kop]

RonS
Barrel twist was my million dollar question. I have 2 barrels both 9 twist, in hindsight I should have had 1 in 10twist.

 

[Janeau]

Well..well..we have the 6 PPC -6BR - 6BRA - 6BRX - 6 X45 - 6X47- 6GT
Where the heck a 6 Major fit in there ? What use ?

 

[Oso]

There are a lot of 6mm with some variants being nearly identical so I grouped those together “/“. I am sure I missed a few. I believe the order as determined by case volume is as follows:

6x45 > 6TCU/6x45AI > 6mm-.204Ruger > 6PPC > 6ARC > (6Grendel / 6mmAR / 6Major / 243LBC / 6Rat) > (6Grinch / 6FatRat / 6mmARTurbo) > 6Max > 6BR > 6BRA > 6BRX > 6Dasher > 6GT > 6x47Lapua > 6XC > 6Creedmoor > .243Win > .243AI > 6Rem/.244Rem

There’s a 6mm cartridge for everyone… pick a case head and start your build

 

[WyleWD]

Aren't the dimension of the 6 Grendel and the 6 Major the same? Isn't the Grinch a 6 Grendel with a 40 degree shoulder?

Here's a link that might clear up the Major, Grendel, and Grinch a little bit.

6MM GRINCH

Here is a list of frequently asked questions concerning the 6MM Grinch. I have spent a good deal of time answering individual questions concerning this cartridge so I thought I'd save myself some...

bartsbullets.weebly.com

The 6 Grendel (or Major) we shot for a few years in 12 (with 68's and 80's) and 14 tw (with 65's and 68's) is pretty competitive at 300yds. Depends on conditions and driver. JME. WD

 

[RonS]

RonS
Barrel twist was my million dollar question. I have 2 barrels both 9 twist, in hindsight I should have had 1 in 10twist.

Whatever twist you have, that twist will determine the bullet used and to me that's the beauty of reloading. I think the 9 twist will work perfectly for the Berger 88's since I've done more research, I think I put the cart before the horse.

 

[T Kop]

My reamer has a .070 throat, little too short for Berger 95 vld. I want as much capacity as I can get. I ordered up ptg uni throater kit to stretch it out some.
Mail truck must be stuck in the snow.