I believe that the problem with bullet jump in lightweight revolvers does not present a problem until you step up to the Titanium and Scandium guns. S&W has a warning on these guns to not use lead, only jacketed rounds due to this problem. Have not heard of anybody experiencing bullet jump with the aluminum guns.
That said, it would be advisable to measure one round, mark it, then fire a number of rounds through the gun, say 25, then remeasure that one round and see if the bullet has started to come out of the casing. This test would show if you may have a problem that could cause the cylinder to bind at the least opportune time.
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