LR Load Development...at 1,000 Yards!

[Killick]

Here's my data:
4831sc for all loads, .2gr. increments, 5 shot groups,
2020-5-24,Temp.@ 85°, light winds, bright sun, no cloud cover., med. to hvy. mirage
.284 Win., 30"bbl.(Benchmark), Norma brass, S&B primers, 180gr.Brgr. Hyb.
V3 Magnetospeed, X ring aim point

1) AV-2,783, ES-16, SD-6.3, W-9.4", H-5.5"=8.7"ø*,(probably a let up)
2) AV-2,796, ES-16, SD-5.6, W-3.9", H-4.6"=4.8"ø
3) AV-2,808, ES-13, SD-5.0, W-4.6", H-4.1"=4.9"ø (use for 90°+days)
4) AV-2,818, ES-16, SD-6.0, W-4.3", H-6.4"=5.9"ø
5) AV-2,830, ES-12, SD-4.0, W-4.6", H-2.7"=4.0"ø (use for +/-80° days)
6) AV-2,838, ES-11, SD-5.0, W-4.5", H-4.8"=5.3"ø
*-approx. diameter of a circle from W,H, used for averaging brackets

 

[Killick]

And the winner is...

 

[savageshooter86]

How did other charges group in relation to POA of other charges? Would be interested to see all charges groups

 

[Dusty Stevens]

Great shooting

 

[Killick]

How did other charges group in relation to POA of other charges? Would be interested to see all charges groups

Good question. Unfortunately I was twirling the knobs between loads and didn’t record the changes. That will be the next parameter.

 

[Dessert]

Very nice shooting indeed. Rifle and shooter have to be on the same page.

 

[JPS338LM]

The magneto speed attached to barrel or with a device on stock or rifle stand?

If on barrel does the group size not change when MS is removed?