What type of gun grip do you use?
LISTEN TO THIS MAN!^ Remember the "technique versus strength" video that Panteao Productions did, with Vogel and Abbate?
That's the eternal debate. :wink:
To a degree technique can compensate for a lack of strength or even simply not as much strength - but there's absolutely no doubt in my mind that more raw grip strength is absolutely beneficial.
Similarly, the debate about the finer points of how to execute the grip is also an eternal one - as with you, I typically take my weapon-hand thumb out of the equation when I'm shooting for precision, a technique I picked up from lessons with Chris Cerino.
Certainly, when I'm shooting fast at closer targets and I don't have time to worry about it - I don't. I just use the natural/instinctive convulsive grip (which has overlaps with point-shooting, as it turns out!), and blast away. But when I need to slow down to make those longer distance shots or really precise shots? I hear Cerino whispering in my ear: "flag that thumb."
It may not work for everyone, but it did work for me.
Go back to time point 4:43 to 5:10 in the video cbaldwin2112 linked to, and you'll hear Vogel talking about the fact that his hands do get cut there.The price I payed today for a grip closer to the bore axis: