Here's the skinny.
Started out chronoing single shots to get a feel for range.
Chickened out w/initiial load of 22 gr.
Grn RL 10x FPS Hor 40 gr V Max
12.8 1903
18 2619
20 2936
22 3249
23 3382
24 3645 - too warm
23.7 3533
23.8 3610
Loaded 5 w/normal seat to fit in magazine
23.8 gr RL10x Hor. 40 gr V Max WSR Primers Federal cases:
Shot Vel
1 3482
2 3542
3 3504
4 3523
5 3482
Average = 3506
Seemed a little warm 60 fps spread. Group size about 1.75.
Figured that if RL-10x is related to 15/19/22 I could seat the bullet out a little further and velocity would go up and pressure would go down. Learned this with the 338 and 270.
So I set the 40s out a little more. Heres the results:
Shot Vel
1 3545
2 3528
3 3543
4 3538
5 3539
Average = 3538
Here's the group. Sure wished I could get that first shot back.
Other than that first shot, the low one, its about as good as the old girl has ever done. Not bad for a rifle that's older than me and I'm oooold
