What was the spread. Vertical or lateral spreads or shotgun spray? Besides trigger pull, consistent grip and consistent placement on bags is of utmost important. The load is fine and crimp will affect accuracy only if its not consistent bw rounds as long as its not so much that it damages the bullet. Also try shooting groups at a closer distance and dont move back until your groups are tight. Also, plave a random couple snapcaps in the cylinder with live rounds. This is why i often have posted photos of 2, 3, and 4 shot groups bc my cousin and i load eachothers revolver at times so we dont know how many live round are in the chamber. Then move it back. Most likely its not the load, not is it the bullets, but the shooter. That was a tough pill for me to swallow when i was working my way up but to this day i dont have one revolver that is truly innaccurate. I have several i THOUGHT were inaccurate.