How tight should my groups be?

[Sneaky]

I would say, if your budget allows you, upgrade the trigger. I have a Geissele SSA-E and a SD-E. I love them both!! super light triggers. Have you tried the coin flinch dry fire practice?....Not saying that you're flinching, but it's good practice.

I'm familiar with that exercise, but I have not done it before. I will definitely do a round just to make sure.

There are so many Geissele triggers to choose from, that I have no idea which one would suit me best. Any recommendation?

I'm pretty sure I want a flat faced trigger, but that's about all I know so far.

[LillDragun]

I have the SD-E flat trigger on my 11.5". It shoots like a long barrel 1911. Killed a yote and javalina both from about 75 yds free standing in December. If you don't have one by the next time I'm in Austin, find a range and shoot my 11.5" build. I really like both my SD-E and the SSA-E. Practically the same 2 stage trigger.