123 gr Sierra MK load data for 260 Rem.

Txhillbilly

Well-Known Member
Joined
Jan 20, 2010
Messages
184
Location
A little south of Cowtown
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

Well-Known Member
Joined
Nov 3, 2008
Messages
82
Location
New Zealand
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.
 

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