picked up a rem 700sps .243 friday. During the 10 day wait put together some loads with. several different bullets nosler bt90gr, bt95gr,100gr partition, speer grand slam 100gr, sierra pro hunt 100gr. Did initial sight in with 80gr fed blu box. groups were as expected 3/4 to 1-1/2" good starting point. Here is my confusion, the bullet that shot the best group was the speer. However it consistently shot 3" off center. I mixed it up to try and correct shooter error. shoot a couple rounds of another cartridge then one speer, shoot 3 speers, shoot 2 of another that 2 speers. did not matter what combination tried or amount of focus used they shoot 3" left of all other cartridges. The end result was 9 speers in a 3/4" group three inches to the left. Have not experienced this with other cal. reloaded.
I am a self taught amature reloader couple years exp. and do not have anyone experienced to consult. Am i a very consistent bad shot with that bullet or does this happen and correction will come with recipe adjustment?
It is eating at me so any thoughts are appreciated.