AM_Hunter
WKR
- Joined
- Jun 9, 2021
- Messages
- 385
I'm messing around with the NAS3 cases for my .308 to see how much more FPS I can squeeze out of it. Did a pressure test yesterday running 168gr Barnes TTSX out of a 21" barrel. My old load was 44gr of Varget out of Hornady brass, I was getting about 2670 FPS.
I did a ladder test from 44.5 - 49gr of Varget. Below is a picture of the brass. I don't notice any pressure signs and didn't have a difficult bolt lift either. Do you guys see any signs of pressure? Velocities for each shot are below, as is the order (I believe) of impacts and my POA. With increasing velocity it seemed to shift up and right.
Should I load up 10 at 49gr and see how it shoots? And maybe another one at 49.5 and 50gr to test for more pressure? Appreciate the input!
Velocities:
1 - 44.5gr 2614.0
2 - 45gr 2652.0
3 - 45.5gr 2685.0
4 - 46gr 2705.0
5 - 46.5gr 2732.0
6 - 47gr 2754.0
7 - 47.5gr 2786.0
8 - 48gr 2805.0
9 - 48.5gr 2828.0
10 - 49gr 2856.0
I did a ladder test from 44.5 - 49gr of Varget. Below is a picture of the brass. I don't notice any pressure signs and didn't have a difficult bolt lift either. Do you guys see any signs of pressure? Velocities for each shot are below, as is the order (I believe) of impacts and my POA. With increasing velocity it seemed to shift up and right.
Should I load up 10 at 49gr and see how it shoots? And maybe another one at 49.5 and 50gr to test for more pressure? Appreciate the input!
Velocities:
1 - 44.5gr 2614.0
2 - 45gr 2652.0
3 - 45.5gr 2685.0
4 - 46gr 2705.0
5 - 46.5gr 2732.0
6 - 47gr 2754.0
7 - 47.5gr 2786.0
8 - 48gr 2805.0
9 - 48.5gr 2828.0
10 - 49gr 2856.0
