6GT project/range report

[Ilmo]

Anyone loaded VN 150 in Lapua Brass with 105 berger hybrid? with either cci 450 or rem 7 1/2 ?
anyone have any experience with loads you that would be willing to share.... Just got the Lapua brass for the 6 GT Thanks

 

[Liven The Dream]

Anyone loaded VN 150 in Lapua Brass with 105 berger hybrid? with either cci 450 or rem 7 1/2 ?
anyone have any experience with loads you that would be willing to share.... Just got the Lapua brass for the 6 GT Thanks

Alpha Brass 450's 109 HB 33.3 grs. Varget 30" 1-7.5 is working well to-date...........
Doing a 600 E-Target today New Lot of Varget ??????

 

[Liven The Dream]

Alpha Brass 450's 109 HB 33.3 grs. Varget 30" 1-7.5 is working well to-date...........
Doing a 600 E-Target today New Lot of Varget ??????

600 yard Test done.
I say good May MATCH will be a true test ? SD 6.1 at Target.

 

[Steve Donlon]

From what I have read the 6mm GT has nothing on a 6.5 Creedmoor at 7000" where I live. I have been running the numbers and even a 30-06 is getting close to a 6 mm GT at 7000' elevation. My 6.5 Creedmoor using 41.5grs. of RL16 powder and a 28" Bartlein barrel is going 2850-2880 fps and 22-24 moa at 1000 yards. The BC advantage has my 144 gr. lapua bullet passing the 6mm at around 7 or 800 yards. The only advantage is in recoil to the 6mm. The reason I point this out is because I have almost got my 6mm GT rifle done and am confused by what I read and would like input by anyone that shoots at higher elevations with a 6mm GT and the effects of altitude. It seems mass and BC are the only downside at elevation.

 

[Liven The Dream]

From what I have read the 6mm GT has nothing on a 6.5 Creedmoor at 7000" where I live. I have been running the numbers and even a 30-06 is getting close to a 6 mm GT at 7000' elevation. My 6.5 Creedmoor using 41.5grs. of RL16 powder and a 28" Bartlein barrel is going 2850-2880 fps and 22-24 moa at 1000 yards. The BC advantage has my 144 gr. lapua bullet passing the 6mm at around 7 or 800 yards. The only advantage is in recoil to the 6mm. The reason I point this out is because I have almost got my 6mm GT rifle done and am confused by what I read and would like input by anyone that shoots at higher elevations with a 6mm GT and the effects of altitude. It seems mass and BC are the only downside at elevation.

Looking forward when your Rifle is done.
Shot Palma(.308 for Postlanders) at NM NRA Range Thin air= less elevation as I remember at 900 ?
My Range is 4100 for what that is worth.

 

[round]

From what I have read the 6mm GT has nothing on a 6.5 Creedmoor at 7000" where I live. I have been running the numbers and even a 30-06 is getting close to a 6 mm GT at 7000' elevation. My 6.5 Creedmoor using 41.5grs. of RL16 powder and a 28" Bartlein barrel is going 2850-2880 fps and 22-24 moa at 1000 yards. The BC advantage has my 144 gr. lapua bullet passing the 6mm at around 7 or 800 yards. The only advantage is in recoil to the 6mm. The reason I point this out is because I have almost got my 6mm GT rifle done and am confused by what I read and would like input by anyone that shoots at higher elevations with a 6mm GT and the effects of altitude. It seems mass and BC are the only downside at elevation.

Confused by what ? Your comparing 2 different cartridges and bullets .

 

[Evan]

From what I have read the 6mm GT has nothing on a 6.5 Creedmoor at 7000" where I live. I have been running the numbers and even a 30-06 is getting close to a 6 mm GT at 7000' elevation. My 6.5 Creedmoor using 41.5grs. of RL16 powder and a 28" Bartlein barrel is going 2850-2880 fps and 22-24 moa at 1000 yards. The BC advantage has my 144 gr. lapua bullet passing the 6mm at around 7 or 800 yards. The only advantage is in recoil to the 6mm. The reason I point this out is because I have almost got my 6mm GT rifle done and am confused by what I read and would like input by anyone that shoots at higher elevations with a 6mm GT and the effects of altitude. It seems mass and BC are the only downside at elevation.

My experience with a 22 PPC shooting 90gn bullets at 2930, a 6.5x47 shooting 153.5gn at 2760, and a 30-6.5PRC shooting 220gn at 2770fps is that the results on paper out to 1000yds are all similar when you know how they react to the wind. They are all still crossing 1000yds at 1400+fps at 5000-6000ft elevation where I shoot; safely supersonic, stable and predictable. I really haven’t found bigger rounds to actually “cheat” the wind enough to make up for not calling the wind correctly when you shoot. They just deliver more energy on target.

 

[Jet]

The highest BC doesn't always win out. Being able to spot your own trace/impact are important considerations to some

 

[Liven The Dream]

Confused by what ? Your comparing 2 different cartridges and bullets .

Well me too? Apples and Oranges.
I will say 300 Win Mag with a 208 Berger Wins in his post ?

 

[Mulligan]

My experience with a 22 PPC shooting 90gn bullets at 2930, a 6.5x47 shooting 153.5gn at 2760, and a 30-6.5PRC shooting 220gn at 2770fps is that the results on paper out to 1000yds are all similar when you know how they react to the wind. They are all still crossing 1000yds at 1400+fps at 5000-6000ft elevation where I shoot; safely supersonic, stable and predictable. I really haven’t found bigger rounds to actually “cheat” the wind enough to make up for not calling the wind correctly when you shoot. They just deliver more energy on target.

This is spot on, you shoot that 22 crazy good at a grand.

See ya at the Rendevzous
CW

 

[swd]

Well me too? Apples and Oranges.
I will say 300 Win Mag with a 208 Berger Wins in his post ?

Always wins the ballistic charts but not always in the real world at a match..

I have been at matches with lots of 6.5’s and 7’s only to have our arse’s handed to us by a 6BR.

 

[Steve Donlon]

Confused by what ? Your comparing 2 different cartridges and bullets .

Everything I read says how much flatter a 6mm GT is compared to a 6.5 Creedmoor, but at 7000' it is reversed from what my results are with my 6.5 Creedmoor at 1000 yards unless a 6mm GT can shoot less than 22 MOA at 1000 yards at 7000'. Just asking if anyone has shot at 1000 yards at 7000' and how much elevation was needed there. Because at sea level it seems like from what I have read, the GT is flatter shooting but they always use 2700fps as the velocity of the 6.5 Creedmoor and 3000fps or there abouts for the 6mm GT. I will find out soon enough, it just seems to general a statement because I can get 2850+fps at my elevation with the 6.5 but have no idea what that load would be at sea level.

 

[Steve Donlon]

The highest BC doesn't always win out. Being able to spot your own trace/impact are important considerations to some

That is the reason I wanted to build a 6mmGT because I saw how much faster a guy could take advantage of a lull in the wind with a 6mm and less recoil.

 

[Ilmo]

got to the range with the new to me.. Lapua brass for the 6 GT... Found a load that worked out great for me.... New lapua brass... 105 Berger hybrid .... CCi 450's... 33.5 VN150.... 1.928 CBTO .....100 yards .... 2905 fps ... 4.9 SD... 5 shots under .400 edge to ege

 

[jxb]

@Ilmo what barrel length is that? Guessing around 28" but I haven't tried N150 yet so I'm curious.

 

[Ilmo]

@Ilmo what barrel length is that? Guessing around 28" but I haven't tried N150 yet so I'm curious.

My rifle is a Seekins Havak Hit pro Chassis rifle.. I just measured the barrel it is 23inches from front of action to muzzle... It is the factory barrel... I have mostly shot Varget and GAP brass up til now.... but I'm really liking the Lapua brass with VN 150 ... obviously ... a little better fps ... VN 150 from now on for me...

I also tried 33.8 and 34.0 gr of VN 150 everything else the same as 33.5... 34.0 started to get some bolt lift... but another good group for me...