270 Ackley improved build and load development

[boostcrazy99]

Decided to build a 270 Ackley improved for my long range cartridge. I know there are better cartridges out there but liked the option to shoot standard 270 win if I wanted.
29" bartlein barrel
Defiance Deviant action
MDT chassis
Vortex Razor HD GEN 3 6-36

First load of H1000 pushing a 170gn berger EOL landed me at 63gn. Velocity was 3062 fps with a SD of 9.3.
Next up is RL26. Trying to get over 3,100 fps but will see what the gun likes.

Anyone else shoot shoot this new/old cartridge that has any load data on 170 bergers?

 

[Bullwhacker]

Built one this spring and love it. N560 has been the standout for accuracy amongst the powders I've tried. Currently I'm getting 2954 fps with consistent accuracy below 1/3 MOA. I have a 24" Krieger barrel. 3100 fps is achievable but I couldn't get the groups I wanted.

 

[FEENIX]

Decided to build a 270 Ackley improved for my long range cartridge. I know there are better cartridges out there but liked the option to shoot standard 270 win if I wanted.
29" bartlein barrel
Defiance Deviant action
MDT chassis
Vortex Razor HD GEN 3 6-36

First load of H1000 pushing a 170gn berger EOL landed me at 63gn. Velocity was 3062 fps with a SD of 9.3.
Next up is RL26. Trying to get over 3,100 fps but will see what the gun likes.

Anyone else shoot shoot this new/old cartridge that has any load data on 170 bergers?

View attachment 485740View attachment 485741

Yes, I have mine built in 2012 primarily to propel the 165/175 Matrix VLDs. It has a 30" Lilja 3G 1:8" Sendero contour. The current load for the 175 is 2993 FPS; got near 3100 but the group opened up with pressure signs. It is .5—75 MOA at 966 yards if I do my part.