I've noticed that too RS. My 6.5 x 55 puts the first shot 2"-3" high and to the left. The next shot is about 1.5" high and left. Then the group will be consistent. The barrel has the twist to the left. I just don't clean it if I'm going hunting in the next few days. I haven't figured out what my 209 x 50 is doing so I just clean it after every couple of shots. It really scatters them with a dirty barrel. I hunt with a clean barrel on my muzzleloaders as I rarely shoot it more than once anyway.
james