CTFlatlander
Beginner
- May 17, 2020
- 15
- 24
Hi -
I've asked for help on the forum so I thought I would post some info that hopefully could help someone else. My goto for 308 is a 165 Nosler BT over 45gr of Varget. In a 22" Ruger 77 I get 2700fps and it is super accurate. I also have a 20" Hill Country Harvester Plus that gets 2640fps and is constantly around 1/2" for 3 shots. I get basically the same performance out of the 165 AccuBond.
So with the powder issues over the past few years I tried working up different loads. This is a summary of what I found as I get started with this:
Alliant 2000MR, 47.5gr gave 2700 fps in the Ruger
Alliant ARComp 41gr gave 2705 fps in the Ruger
IMR4166 41gr gave 2459 fps in the Hill Country
IMR4064 44gr gave 2583 in the Hill Country
This was just to look for pressure and see if the velocities would be close to Varget. Also if there were any significant red flags. Based on this initial set of testing, all looked decent except for the velocity with 4166. None of these loads had any pressure signs. 4064 was very accurate at 42, 43 and 44 grains with predictable increases in velocity and point of impact. I will do more accuracy/statistical testing and use these as a starting point.
Hope this helps
Tim
I've asked for help on the forum so I thought I would post some info that hopefully could help someone else. My goto for 308 is a 165 Nosler BT over 45gr of Varget. In a 22" Ruger 77 I get 2700fps and it is super accurate. I also have a 20" Hill Country Harvester Plus that gets 2640fps and is constantly around 1/2" for 3 shots. I get basically the same performance out of the 165 AccuBond.
So with the powder issues over the past few years I tried working up different loads. This is a summary of what I found as I get started with this:
Alliant 2000MR, 47.5gr gave 2700 fps in the Ruger
Alliant ARComp 41gr gave 2705 fps in the Ruger
IMR4166 41gr gave 2459 fps in the Hill Country
IMR4064 44gr gave 2583 in the Hill Country
This was just to look for pressure and see if the velocities would be close to Varget. Also if there were any significant red flags. Based on this initial set of testing, all looked decent except for the velocity with 4166. None of these loads had any pressure signs. 4064 was very accurate at 42, 43 and 44 grains with predictable increases in velocity and point of impact. I will do more accuracy/statistical testing and use these as a starting point.
Hope this helps
Tim