How you stand when you shoot is like throwing a stone in a pond: Ripples.
Isosceles or Weaver? Slavish adherents to both are wrong: Here’s why.
Getting a grip doesn’t just depend on your architecture and mechanics. Gun surfaces play in the mix too.
Getting the grip right does take some precision but doesn’t have to be difficult.
Issues with the grip are the single biggest problem in shooting a handgun well.