123 gr Sierra MK load data for 260 Rem.

[Txhillbilly]

I'm trying to find some load data for these bullets.My Sierra data book doesn't list them-it's a couple years old.
Can anyone help me out?
I'm looking for data with Hogdon or Alliant powders. Thanks

 

[Bear 9362]

I'm trying to find some load data for these bullets.My Sierra data book doesn't list them-it's a couple years old.
Can anyone help me out?
I'm looking for data with Hogdon or Alliant powders. Thanks

I did a ladder test with 123 Sierras and started at 45grains of H4350 and went up in 1/2 grain increments to 48grains.
47. 5 and 48 grains were too hot.
46 and 47 grains looked promising but i didn't get round to shooting them at 300 yards as I've decided to use 140 A max's and just about settled on a load for these.

Hope this helps.
Steve.

The usual disclaimer applies to loading information.