H4831 Data for 260 Rem.

[CNJarvis]

I'm comparing loads from different sources for 130gr bullets in 260 Rem. and the Hornady data seems a bit odd.

Sierra and Berger list 45.4 and 45.2gr, respectively, as max charges for their bullets. Hodgdon's data lists 46.6C as their max, and the Nosler manual lists 47.5 as max.

Hornady, on the other hand, lists 49.9 grains as the max charge. Loads above say 47 grains look like they'd be heavily compressed. This seems really strange to me.

Does anyone have any experience with the Hornady loads from 45-49 grains?

 

[MikeMcCasland]

.260 Rem, with a 26" Bartlein data. .090 freebore.

Anything about 45.5gr is heavily compressed, even with a 6" drop tube. I'm using comp seaters, so didn't want to mess with it. I got better accuracy with H4831SC than I did with H4350, and lower ES/SDs. That said, it was 100+ FPS slower at least.

Edit: Temp was ~80 deg for all of that testing, and those are 5rd VEL/SD numbers.

 

[CNJarvis]

Following Hornady’s data, I loaded one test round ea. in 1/2 grain increments from 46gr through 49 gr. I quit at that point because the seating stem (hornady’s eld specific stem) started to deform the ogive.

No need to go any further than 48.5 IMO.

Thanks for the data Mike. That was quite helpful.