what RC said, with an addendum that
there are at least two good cast bullet suppliers of 135-140 gr. LSTC, LRN (a re-done 38Super bullet), and I think a LTRN bullet that allows you to replicate the GDSB short-barrel reloads. One of them is Missouri Bullets, a supplier preferred by many in this forum.
If you are interested in that, Google in this forum for something like "Replica Reloads" or use my username--about five-six years ago a few of us did exhaustive workups on the 38+P type Short-barrel reloads.
IOW, a good search will bring up a lot of information about reloading 38 Special for carry guns.
My preference has slowly shifted to an "FBI load"--e.g., like the Rem 38S, a 158-gr. LSWC-HP running at 800 fps--so I build most of my practice ammo out of 158 gr LSWCs and even carry them as well.
Running 158 gr with the correct powder and putting it up to European-spec 38 Special recipes can get you running 840 fps or so, well within striking distance of that original 860-875 FBI load (that ran from 2.5" barrels).
You're in a fertile ground for this particular reloading info; look for it.
Jim H.