I have a 260 in Remington model 7 20" bbl
Shooting long bullets like the 130 Scirocco II or the 130 Berger VLD is not going is a disappointment 4" groups @ 100yrds. If you want to shoot long bullets look at another rifle.
100gr bullets will shoot MOA & 125 Nosler parts will also & function in the short action magazine
This rifle has taken a lot of work to get it to shoot. There are no go to loads in this caliber, as most use it in custom long range rifles not a compact hunting rifle.
The rifle likes once fired, neck sized brass, new brass used in the same load will double the size of the groups & lit likes the bullets close to the lands I have the best luck .005 off the lands. That limits the choice of bullets as the OAL of the magazine box is around 2.825 in my rifle. After trying Nosler, Speer, Sierra, Beger, Swift, & Hornady bullets (10 different weights & configurations) also about as may powders. I have settled on Hornady 100gr SP ( also marketed as interbond) 41.5grs RL15, once fired necksized by an RCBS die, brass (Remington 260 or Win 243) to get it to shoot .5" @ 100yrds.
The 125 Nosler Parts will shoot .75" with 43.4gr H4350, same brass & both loads set .005 off the lands
The rifle has the action & the pressure point bedded (floating the bbl made it worse) trigger set @3lbs.
Should make a dandy lightweight rifle to pack in the mountains of AZ, but what a pain in the ass to get it to shoot & I would not suggest anyone to go out & buy one unless you plan on a lot of work. I have traded a lot of info with others at my range & we all feel the same about the 260, "wow that should be a cool long range shooter....haha"