[QUOTE=Terry Tiell;218988...But now I'm putting all 8 in a group the size of a baseball at 25ft instead of a shotgun pattern.

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Terry, I'm going through the same growing pains, shooting low, left, and disturbingly large pattern with my Phillipino CNC'd 1911, a High Standard. However, I've only put about 75 rounds through it so far, so I'll run through another few boxes and see if my shooting results calm down a bit.
Interestingly, everything else I shoot tends to the left, as well. This would include 9mm, 7.65 mm and converted .22 Lugers, and some Ermas in .380, .32, and .22 I'm thinking that my technique is hurting in some way--such as the trigger jerking mentioned, though I'm pretty conscious of the firm grip, straight arm rule of thumb for Lugers. What else should I be adjusting or making sure of, concerning my stance/technique?