Are you saying that the witnesses don't agree with OPs version - gun shots, call for help, baseball bat?
Me?
Sort of, I think. He says he shot at 3.00(ish), then went out and yelled for help, then went back at 3.15(ish) to get the door down with the bat.
She's saying she heard one bang (or one set of bangs, I'll have to go back to make that out properly), and then the helps, and then no more bangs.
So it sort of depends what that first bang was that she heard - if she heard the gunshots at 3.00(ish) and then the helps, but then the bat noise was just to quiet for her to hear, then technically this agrees with OP.
However, that relies on the bats being significantly quieter than the guns, and his defence needs them not to be.
If she heard the bat and then the helps, then yes, she disagrees with OPs timeline.
I'm reluctant to think any of the ear witnesses are particularly valid - early morning, sleepy, woken suddenly, at varying distance from the house.
I totally agree with this. It all depends on who had corroborating testimony, whether there was a specific reason to time check, etc.