I just have a few books, here?s what I have found so far for Win231/HP38in the following books:
Lee modern reloading: 125gr jacketed 1.069 OAL 2.8-3.3gr
complete reloading manual for the 9mm luger: Win 231 Win FMJ 124gr 1.1609 max 4.2-4.5gr
HP38 125gr SIE FMJ 1.090 OAL 4.4-4.8gr
Reloading guide for pistols 125 gr sierra FMJ 1.090 OAL 4.4-4.8gr
Lyman doesn?t seem to have any data for this bullet.
That?s a lot of conflicting information with max loads varying from 3.3 to 4.8 depending on the source.
OAL is not an issue for me as I don?t own a CZ, yet, (I hope you don?t hold that against me
),
? Loads will vary, across books due to many, many variables... powder lot, altitude of the test lab, barrel length of the test gun, etc, etc. Yes, you want to build a reloading book library,
BUT only one book can be your go to
primary source. I highly suggest you standardize on the
Lyman manual.
? The Lyman #49 book lists a great load for W231 on p341.
125gr jacketed, 231 at 3.9 to 4.4gr, at an OAL of 1.075". There is no difference between 124gr and 125gr for your purposes. The main thing is that it's within 4 or 5gr and Jacketed (not plated or cast lead).
? Now you'll want to choose an OAL roughly between 1.125" and 1.145". Since the data was gathered at 1.075", you'll be able to load higher than 4.4gr, if say you chose a longer OAL like 1.135". The main thing to watch out for is the bullet velocity at
Max Load, which is 1043fps. That velocity warns of the danger zone for W231/HP38 with jacketed 124gr bullets
regardless of OAL. But, if you are simply loading target, competition, or plinking ammo, then you'll never get near Max Load anyway. So exactly where the Max Load has moved to is a moot point.
? Your previous error which cost you a barrel, was probably due to a
double charge. That's the
bad thing about
very dense and
very fast powders, such as TG. It takes so little that it's easy to place a double or triple charge inside the case, and then
Bam! Very glad you weren't hurt or deterred from reloading.
When I'm king of the world, salesmen that recommend TG to first time reloaders will be shot at dawn !!

There are simply too many great powders out there that don't have half the baggage. Why risk it ? I'll get off my soap box now.
? The fact that you don't own a CZ yet, simply means you're still in training.

As per the Template give in the Stickies, we need to know more about your reloading equipment to help with your reloading process. As you probably figured out,
process is everything in reloading.
All the best !
PS. How about putting your locale in your profile? A general area is good enough, like "East Texas".