When I first started shooting about 8 years ago, I learned the "thumbs forward" grip.
It's just what I was taught and was very much in fashion. I believe it still is today. I shot very accurately and fairly quickly with it. Over time however, I saw more and more old timers using what I would call the "thumbs down" grip:
I began to see some advantages of the "thumbs down" grip:
1) The strong hand grip is the same whether shooting two handed or one handed. Makes it easy to transition between one and two hands. Like opening a door for instance.
2) The grip is essentially the same when shooting a revolver.
3) For me it "feels" better cause when shooting thumbs forward, my weak hand thumb and hand location sometimes changes between shots and I need to regrip, or at least feel like I need to.
4) When shooting SIGS and similar guns, thumbs forward with my strong hand thumb up high sometimes causes the slide to not lock back after the mag is empty. This does not happen with thumbs down, since the strong hand thumb is curled down.
5) The gun just feels more "secure" in my hand.
So, what are your thoughts? Thank you!