Warning: the whining and question below will probably be of little interest for shooters not interested in CBA benchrest matches -- and maybe not much more of interest to CBA competitors. But I am hoping some of the latter will have some helpful hints for my problem with score matches.
Just got back from an enjoyable two day match put on by Mel Harris in Roseburg, Oregon where I took both first and last place by virtue of being the only shooter in Hunting Rifle Class. I am still grumbling over a problem I have in shooting the CBA score match.
My rifle and load seemed to working well and although some mirage made the 200 targets dance around, the conditions were generally good. My 5 shot group eggs were 0.75" at 100 and 1.85" at 200. The 10 shot group aggs were naturally bigger at 1.20 and 1.51 moa at the two ranges. I had my usual trouble with the score match.
The score match requires firing one shot at each of five bulls on the same target card and shooting four cards for a total of 20 shots. Although my groups at 100 yards were clearly smaller than the size of the 1.5" 9 ring of the score target, my score at 100 was 189 out of 200 which isn't terrible for Hunting Rifle Class but three of the shots were 8s and not all out in the same direction. Things were much worse at 200 with shots out in all directions including a miss which requires missing the center by three inches.
I think what is going on is when I move between the five aiming points the position of the rifle on the bags changes enough to change the zero. I am trying to do most of the moving by adjusting a windage top and a Sinclair "Speed Screw" on my Bald Eagle front rest.
Any comments or suggestions will be appreciated.