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The way I check for bullet set back is to load 3-5 rounds, fill up the mag, insert in gun and cycle the rounds by hand vigerously, pulling the slide back to the extent of its travel and let your hand continue back slipping off the slide so that there is no resistance to forward slide travel and let the spring pressure only cycle the slide forward. this will let the gun do what it can to seat your bullet deeper in the case.
Of course, measure the OAL of your rounds before and after cycling thru the gun. If any of them are even the least little bit shorter than before they were cycled, you either need less belling of the case mouth, or more tapercrimp.
I've taken 230 gr bullets all the way up to 6.0 gr of ww-231 with no pressure signs in my Colt and Glock 21.
Like was posted above, if your ammo has been exposed to sunlight for extended periods or stored in a hot enviroment, it can affect the powder and cause raised pressures.

"Always place your clothes and weapons where you can find them in the dark"
Lazarus Long
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