Normally, heavier bullets cause more muzzle flip; and will normally register higher on the target. Normally.
As you have found, it doesn't always happen. Since your velocity has lessened by a 100 f/s, your recoil profile has changed. If your 230 bullets were at the same velocity as the 200's, the recoil would unquestionably be greater.
Also, much of pistol shooting is subjective. A certain circumstance man not be true, but it sure seems that way. If the 230's group well, I wouldn't lose any sleep over it. But it is a nice puzzle.
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Archie
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