270 win.....165 matrix

[htime8]

I was just wondering if anyone had any load data they would share using h4831. I've read a ton of threads and have not come across any final loads people have settled on.

 

[Shane Lindsey]

Since there is no published data I was given advice by BnG to use the Nosler 160 Partition. It has more bearing surface so it was a good starting point.

This is at a pressure that I feel comfortable with, some are getting more velocity but I am not going to stress the rifle or the cases more than I need to. THIS IS SAFE IN MINE RIFLE YOU MUST WORK UP IN YOURS.

55.5 H4831sc
Win case
CCI 200
Vel 2675 fps

 

[FEENIX]

Like others as you noted, I too have not settled. Below is my accuracy load fireforming to .270 AI

58.5 H4831SC
WW brass
BR2
2981 FPS

 

[htime8]

Thanks for the info guys. I'm also at 55.5 of H4831sc and running at 2650fps. Just not sure how much harder a guy can push these. I might try to go a little higher and see when I run into pressure signs.

 

[geo4061]

What twist rate are you all using? Anyone 1 in 10?

 

[FEENIX]

What twist rate are you all using? Anyone 1 in 10?

Mine is a Lilja 30" 1:8" 3-groove.

 

[Shane Lindsey]

Hart 1:8 at 26"


I was actually able to go higher but I do not have a pressure gauge and the cases started doing inconsistent things. I just backed down to where everything stayed the same. I do have an itch to play with H1000 and maybe even the RE26 or 17. Some folks are getting good velocities in their 30-06 with RE17 and 215 Bergers.

 

[Shane Lindsey]

Thanks for the info guys. I'm also at 55.5 of H4831sc and running at 2650fps. Just not sure how much harder a guy can push these. I might try to go a little higher and see when I run into pressure signs.

I don't know how much you have worked seating depth, but I was able to gain some by moving closer to the lands. Just have to play with it.

 

[Bad Company]

I shoot a .270 Win with a Douglas 1:10 barrel and get .25-.50 MOA at 850 yards. A reloader in Dallas makes rounds for me using 165 gr Matrix with H1000. Velocity is around 2840...pushing the limit. I am getting .290 G7 BC with the 1:10 twist at 900 ft elevetion 80 degrees temp. If I had a 1:9 twist or high elevation I think G7 would be .310.

 

[htime8]

I don't know how much you have worked seating depth, but I was able to gain some by moving closer to the lands. Just have to play with it.

I'm shooting a stock remington with a 1 to 10 twist. If i remember right im about .02 from the lands. I haven't messed around with it much so maybe ill try to move it around a little bit.

 

[Shane Lindsey]

Thats about where I am now.
If it's shooting. Leave her alone and just bang!!!