I load quite a few 38Spcl for plinking with 6" revolvers. I don't load any bullet that doesn't have a cannelure for crimping. At one time I was tempted to run 9mm bullets with no cannelure, but that did not pan out. I quickly found I was money ahead to buy dedicated 38/357 bullets and
lightly crimp them into place.
My son likes to shoot 158gr (always over 4.0gr of W231) only in his S&W Model 10's. Both the plated and jacketed 158gr from RMR do a great job. That's what I shoot with him, but when he's not around I mostly shoot coated MBC and/or Berry plated 144gr DEWC. All of these are traveling at 750 to 900fps (target speeds).
I have no experience with 38/357 rifles.
Notes...
• Heavy crimp = short case life. At target velocities your brass will last almost forever... if you will use a minimal crimp. IME, more 38 brass is killed due to multiple roll crimps fracturing the case mouth than anything else.
• Very dense powders can become "
position sensitive" in the cavernous 38Spcl case, so stay away from powders like
Titegroup and
Ba10. By this I mean velocities and accuracy radically change depending upon whether you point the weapon up or down before shooting. Low density is one reason
Unique remains a favorite, even though it's hugely outdated.
• Loading 144gr DEWC flush is one way to fill the case volume and get away from the
sensitivity, but you really need to watch your case brand when you do flush loading. (No
PMC brand.) I deem it better to simply watch my powder and load the MBC coated to 1/10" exposed.

• The most accurate target power I've tried is Accurate
No.2, while my favorite is
N330 for general plinking. W231/HP38 is not too shabby.

• Case lube is still your friend, even with carbide dies.
• As our friend JLJ is fond of saying "Fit is king" when you shoot any type of lead bullet. If you are unsure, it never hurts to order the larger size.
• If you are competing with your rifle, you may be time ahead to place a Factory Crimp Die
type of die in your last station to iron-out any bumps in the case wall. Don't use it for the crimp so much as keeping the side walls of the case straight. The Max Dia for the case is (of course) 0.380", and a post loading "sizing die" can iron those bumps away before they become an issue.

Hope this helps.