blackdog
Well-Known Member
I bought a .260 Remington last year and it's been a tack driver with H4350 and 142g SMK's. I want to take it antelope hunting this fall so today I started doing load development with it, working with 140g Accubonds and H4350.
Looking at the Hodgdon data, it lists the max for 140g Nosler Partitions as 42grains and it also lists the 142g Sierra HPBT max as 44.5. I initially used the Nos Part max for my development but after seeing no pressure signs after stoping at 42.4, I'm wondering if I should be using the 44.5 as a max. It doesn't help that the 140g Accubond isn't listed in the Nosler manual with H4350.
Thoughts?
I did get really nice groups at 41.8g (0.38") and they started opening up a little at 42.1 and 42.4 but still in the .5 - .7" range.
Looking at the Hodgdon data, it lists the max for 140g Nosler Partitions as 42grains and it also lists the 142g Sierra HPBT max as 44.5. I initially used the Nos Part max for my development but after seeing no pressure signs after stoping at 42.4, I'm wondering if I should be using the 44.5 as a max. It doesn't help that the 140g Accubond isn't listed in the Nosler manual with H4350.
Thoughts?
I did get really nice groups at 41.8g (0.38") and they started opening up a little at 42.1 and 42.4 but still in the .5 - .7" range.
