Thought I would share load data from my 260 AI. Originally had a 24" barrel which I later had shortened to a 22" barrel (or depending on how you measure, a 25" barrel shortened to 23"). Rem action and a min spec reamer was used for chambering. PacNor SS barrel with 1:9" twist. Only accurate loads listed and some aren't near max. All loads 0.005" off lands.
260 Ackley Improved
Sierra 100g HP
42.5g BenchMark 3,291 fps
49.0g IMR-4350 3,161 fps (very accurate)
50.0g H-4350
100g Partition
50g H-4350 3,330 fps (3,290 fps after barrel was shortened)
100g Nosler BT
24.0g SR-4759 2,475 fps (reduced recoil load)
95g VMax
43.5g IMR-4064 3,333 fps (longer barrel)
45.0g RL15 3,236 fps
49.0g IMR-4350 No crono, very windy but still shot 1/2" - 3/4" groups)
50.0g H-4350 No crono, very windy but still decent groups
49.0g Hunter No crono, 3/8" group on fireform load with Rem brass & 215M primer
120g Pro Hunter
45.5g H-4350 2,955 fps (good hunting load, some 1/2" groups)
Nosler 120g BT
45.0g Hunter 2,826 fps (crazy accurate) 215M primer
129g Spire Point
46.0g RL-19 2,769 fps
Last edited by HogWild; 12/08/13.
