"0.017" is okay? That's more variation than I'D want. That's awfully close to the "0.02" change that SPEER wrote about. Granted that 93Bandit's load IS 6 - 6.5% under max., but the Speer example's load only generated 29,000 p.s.i., before things went wrong with the seating depth.
If the OP has a chronograph, I advise him to run 10 - 12 of the reloads with the longest o.a.l. through it & calculate the average velocity & standard deviation. ALSO, take note of the fired primers vs. some fired factory rounds. Repeat this process with with 10 - 12 of the reloads that are shorter by 0.017". If the shorter rounds don't give velocities expected of a .38 Super, and the primers don't look appreciably flatter than on the factory rounds, you MAY be alright. But the real answer is to do whatever must be done to keep o.a.l. at some prudent length, + 0.005"(or SMALLER).