Originally Posted by
leadman
I noticed yesterday at the range that the first boolit in a group was always out of the rest of the group. i have been shooting 3 shot groups to save my neck (deterioration and arthritis). I have been pushing a dry patch thru the bore after each 3 shot group and I think this is causing the first shot to be out, so remember this as all shots are included in the group sizes. I also had problems with my Leadsled and my sons AR as the rear sling loop on the side of the buttstock was hitting part of the Leadsled. I tried stuffing things between the Leadsled and the buttplate but it did not help much.
All the boolits were coated with the Red Copper Hi-Tek.
Here are the results of my range session yesterday:
Savage 30-06 200grs, 314299 GC'd, Heat Treated Lino 32BHN, sized .311", Reloder 17 powder, Fed 210 primer, 3.3" oal.
charge avg vel. group size 100 yards
45grs no reading 1,835"
46grs no reading 4.958"
47grs 2,397 fps 1.469"
48grs 2,396 fps 4.921"
49grs 2,483 fps 3.75"
50grs 2,484fps 3.395"
51grs 2,508 fps 6.0" + This charge is max per Alliant for jacketed
AR15 in 5.56, 16"? barrel, Lyman 45gr RN GC'd, Heat Treated Lino, Sized .225", H4895, WSR, 2.025", crimped
Charge Avg Vel. Group Size 100 yards
22.5grs 2,502 fps 2.916"
23grs 2,603 fps 4.06"
23.5grs 2,596 fps 1.230"
24 grs 2,666 fps 3.386"
24.5grs 2,754fps 2.450" This load is over 3,100 fps in my 23" Contender
Contender 23" Heavy Barrel in 223 Rem. 45gr Lyman RN, Heat Treated Lino, GC'd, sized .225", H4895, WSR, 2.02".
Charge Avg Vel. Group Size 100 yards
24.5grs 3,159 fps 3.812"
25 grs 3,272 fps 3.682"
25.5 grs 3,346 fps 1.830"
26 grs 3,360 fps 3.256"
26.5grs 3,400 fps 2.907"
27grs 3,460 fps 2.482"
27.5grs 4,489 fps 2.181" Two tiny specks of lead on the dry patch
All of the top charges in the 3 guns was at max case expansion. Temperature was also about 114 degrees when we finished firing the groups.