.260 reloading data

[.260 AR-10]

Anyone currently reloading .260 rem. Not as much data in books for this caliber. Going to do some experimenting with 139gr scenar and 140gr berger. Having a tough time choosing powder. This caliber seems to like more velocity, but not sure how far to push it with the pressure in the semi-auto. At what point is the gas system at risk? 60,000psi seems to be "industry standard" maximum, any input is welcome. I may even drop bullet weight, but the BC on these two bullets is to good to ignore. Any input is appreciated.

[halifax]

I've got an LR308 with a DPMS 260REM upper. I'm not at home now but I will post some load data for you later.

[.260 AR-10]

Thank you in advance.

[Bongos]

I shoot 260 Rem thru a R&D Guardian bolt gun here is my loads
260 Rem = 44gr of RL19 120gr SP
260 Rem = 43gr of RL19 140gr SP

Sub MOA for sure, half MOA if I do my part (which is not often), these loads are about 1.5-2grain below max, in a Semi I would try it with at least another 1-1.5gr less.

H4350 is the Bomb for this load, I just happen to have a ton of RL19, once I finish off the powder (4lbs to go).. switching over to H4350 (Get Hogdgon DO NOT get IMR 4350)...

[killshot44]

A lot of guys on NCPPRC shoot .260s (though mostly bolt-guns), might find more responses there.

Like Bongos says, start low and work up and watch your primers.

Register here :http://www.ncpprc.com/forum/phpBB3/index.php