wisconsinteacher
Handloader
- Dec 2, 2010
- 1,976
- 288
Well I went 4 for 5 today. My goal was to get all 5 rifles to 1 MOA today but the .338WM still couldn't do it. I did use my chrono for the first time and it recorded every shot fired. Now I need to learn how to use the info to improve my loads.
22-250 (first time out with the new stock and bedding)
55 Vmax, IMR 4064, Rem brass
35.3gr=.712" Ave 3456 SD 49
35.6gr=.648" Ave 3491 SD 15
35.9gr=1.155" with the last shot called as a pull Ave 3513 SD 15
25-05
87 Sierra, RL19 58gr, Win virgin brass
on the lands= .770" Ave 3372 SD 23
.02 off lands=1.377" Ave 3424 SD 12
.04 off lands=.839" Ave 3399 SD 64.5
30-06
H4350 56.0gr, 180 AB, Rem Brass
Groups= .933" Ave 2713fps SD 6.4
6.5 Grendel
XBR8082, 107 Sierra, IMI fire formed brass
25.2gr=.224" Ave 2298 SD 6.3
25.5gr=.751" Ave 2348 SD 15.5
25.8gr=.828" Ave 2368 SD 3.5
Those rifles made me very happy. Now to take the best 22-250, 25-06, and 6.5 Grendel group and reshoot. the 30-06 load has shot under 1" the last 3 times out. I am done that that one!!!
338WM I let the rifle cool for 15 minutes between shots. I also put a aerator hose from a minnow bucket down the barrel to pump cool air in it for the 15 minutes so it would really cool off. I shot at 186 yards.
RL19 75.5gr, 210 PT .01 off the lands, Win brass and Win mag primer
4.042" group
Ave speed 2923 fps
SD 20.2
I think it is time to try h4350 with the 338WM???
It was a great morning to be out. I was happy to see the 22-250 shoot so well. The next question is, what would you do next with this info as far as working up loads goes?
22-250 (first time out with the new stock and bedding)
55 Vmax, IMR 4064, Rem brass
35.3gr=.712" Ave 3456 SD 49
35.6gr=.648" Ave 3491 SD 15
35.9gr=1.155" with the last shot called as a pull Ave 3513 SD 15
25-05
87 Sierra, RL19 58gr, Win virgin brass
on the lands= .770" Ave 3372 SD 23
.02 off lands=1.377" Ave 3424 SD 12
.04 off lands=.839" Ave 3399 SD 64.5
30-06
H4350 56.0gr, 180 AB, Rem Brass
Groups= .933" Ave 2713fps SD 6.4
6.5 Grendel
XBR8082, 107 Sierra, IMI fire formed brass
25.2gr=.224" Ave 2298 SD 6.3
25.5gr=.751" Ave 2348 SD 15.5
25.8gr=.828" Ave 2368 SD 3.5
Those rifles made me very happy. Now to take the best 22-250, 25-06, and 6.5 Grendel group and reshoot. the 30-06 load has shot under 1" the last 3 times out. I am done that that one!!!
338WM I let the rifle cool for 15 minutes between shots. I also put a aerator hose from a minnow bucket down the barrel to pump cool air in it for the 15 minutes so it would really cool off. I shot at 186 yards.
RL19 75.5gr, 210 PT .01 off the lands, Win brass and Win mag primer
4.042" group
Ave speed 2923 fps
SD 20.2
I think it is time to try h4350 with the 338WM???
It was a great morning to be out. I was happy to see the 22-250 shoot so well. The next question is, what would you do next with this info as far as working up loads goes?