I recently purchased a 45 cal CVA Optima with a 26 inch barrel. I am having some difficulty getting a 100 yard group that I can live with. I use 777 powder and have tried PowerBelt, Hornady, and Shock Wave bullets in various sizes. I wet and dry swab between shots. I have a Nikon Buckmaster scope. If anyone has this SAME rifle that shoots well, please share the bullet type and powder charge and any other info that might help. I'm getting a little frustrated.