Why didn't you say that in the first place? Here I thought you were a Battle Hardened Roughneck that we could openly abuse.
It is good you know how to shoot. Generally when people put up posts like yours they are still trying to figure out which end the boolits come out of.
Since you do shoot often you can probably hit what you are aiming at, the .38 is better than nothing.BUT,,, It also it looks like you are good at Horse Trading so why not upgrade that Ruger .38 to a Ruger GP100/44. Those guns are .44 Specials but are strong enough to take anything you can put in one. You could easily get 1000 fps out of one and that's with a 260 gr boolit. The only reason I don't have one is because I have the S&W 696, but I have handled them alot, and they are great guns. Ruger made the GP44 because S&W stopped making the 696, and started making the M69 which is a similar L frame but will take .44 Mags. Not nearly as cool and they are still $1000+ guns
Granted, a well placed .38 is better than a miss with a .44, but a well placed .44 is better than a well placed .38 every day. And if you shot the GP44 in your IDPA shoots for a few months you'd wonder why you ever messed with the 38's, and you'd be able to dish out some real HP! (Horse Power not Hollow Points).
Also the prospect of using these loads in your 20" Marlin 1894 CB Short Rifle would come into play and carrying that in the great wide open with the 44 revolver would make you equal to just about any challenge including poorly outfitted Mexican Drug Mules running wild in your area.
All that said, you'll probably figure out what is best for you, and the wounds you've suffered in this thread will heal quickly.
Good Luck
Randy
''.38 HV (SPL) load for .38/44 Outdoorsman - The Firing Line Forums
https://thefiringline.com › forums › showthread
Feb 14, 2009 - Elmer Keith's original load for the . 38/44 was 13.5 grains of 2400 and the 173 grain Keith type bullet and standard primers. That is good for 1300 or so fps. If you back down to about 12 grains with the 158, that should give you the velocity range you are looking for and still be safe in your large frame* S&W.''