260 Rem H4831

[Deleted member 10043]

Anybody running compressed loads using H4831 or H4831sc for 260 Rem with 140 or 142? What are you using that works. Mine has a 29" barrel with the so-called Ft. Bragg cambering. 142 FGMM is getting super nice groups @2850. Reload COAL is 2.891 with 142 SMK.

 

[EOD350]

46.5 H4831 SC, 142 SMK, 2890. Very accurate in my gun also, 136 scenar L 46.8 H4831 SC just under 2920 but great accuracy. I have shot BR-2's and 210's with little change in accuracy or speed. No pressure signs of any kind. I like 4831 in a 260 with 136 up. My barrel is 28" so speeds are up a tad.

 

[Deleted member 10043]

Cool, thanks.

 

[Niles Coyote]

My 24" obermeyer barrel throated for 140's runs well on 47grains of H4831sc, 2790fps in Lapua brass using 139 Scenars.

 

[Deleted member 10043]

 

[GhengisAhn175]

Ft Bragg chambering? I take it you got the tooley special eh?

 

[Deleted member 10043]

Somebody did.

 

[Morgan Scott Johnson]

I'm planning on trying H4831 and 140 Nosler. Will see how it works out when I do and note on here.

 

[Geno C.]

I never tried it in my 260. In my new 260ai it was supposed to be THE powder. I got to 50gr and didnt top out on pressure or get over 2900fps. I went back to H4350 and 44.6gr hit the node at 2920fps and pressure signs were are 45. Not exactly what you asked for but another reference to draw info from

 

[Dewey7271]

More reference. 48.6 gr in my 260 AI gives 2925 w 140 RDFs, 26" barrel

 

[Deleted member 10043]

Thanks, this chamber likes factory COAL. Just using minimum load of 45 grains is 2750 fps at .3 moa. I was loading to lands and getting pressures. Now I can go up for the extra speed.