I used 2-pack filler and a latex glove.
This will make it a true anatomical grip as its moulded to your hand.
You dont have to but I made new grip blanks from ply as the original grips for my pistol a quite rare now.
Mixed up the filler and layed it on roughly where I thought it needed building up, like the palm swell etc, then with the glove on held the pistol in firing position until it became to hot to hold, by that time it has cured enough to be able to let go anyway, then go over it with some sand paper to take off the edges, do a fine fill and a final sand, then paint.
My averages went up by 10 just doing this one mod to my pistol, my averages also went up by getting the balance right by adding weight to the pistol, the rest is all practice and stance.
ATB
Sean
Slowly morphing into an RWS/Diana/Original fanboy.
Definitely a springer fanboy.