My suggestion is shoot the gun off a bench rest with various types of ammo, all single action. This will gve you a good idea of the intrinsic accuracy of the gun & ammo selection.
Then try various grip stles 2 hand, making one change at a time... the scientic method we were taught in school... record all your results.
Have your instructor watch your grip. It may just be that the gun doesn't like your grip.

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NRA LIFE
Reserve Officer 9yrs