If you are using hollow base wad cutters, 3.2 gr WW 231 maybe just too warm. Try 2.8 to 3.0 grains WW 231 and see your group size. I used a starting load for HBWC, fired six rounds and had 9 holes in the target. Backed off 0.3 grains and got clover leafs -- big hole with 4 to 6 petals. Initial load was tearing skirts off HBWC.

You 3.2 grain load maybe distoring the skirts. Reduced powder charge is cheaper than a new gun, and you can buy a new gun anyway.

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S&WHF 366