I guess we're off topic regarding the .38 Super, and this will probably be more info than you bargained for John, but where .45s are concerned, the 1911 platform is the recommended option amongst my friends who shoot IPSC and similar disciplines.

STI is probably the most recommended for starters, Canadian Paras properly worked are popular, and Colts of course, Mk.IV Series 70 being preferred over the Series 80 and later but not many remain unmolested. Monicas like "Gold Cup National Match' etc do have meaning apparently.

Bul Armoury also has a following, I spent a day with the importer in Brizzy many years ago, interesting man...
If you have thousands to spend, there are specialist variants by custom pistolsmiths of course that will make your eyes water!

This info is from my (very!) limited experience compared with serious competitive shooters, and is common knowledge I assume.

Personally I shoot .45s in the Australia Day, Bombing of Darwin, Anzac Day and Remembrance Day commemorative shoots with a 1914 original Argie contract Colt, or a CFS Sistema Colt, when not using my Mk.VI Webley revolver. Permits to discharge collector firearms are tightening up unfortunately. Those commemorative shoots are 10-round series, and I have been at a disadvantage shooting two strings of five in the rapid-fire sequences! ...hence the 10-round mag purchase.

My main competitive (term used loosely!) combat-style handgun for falling plates etc at my club is a Mk.IV Series 70 in .38-45 JWH, but I don't shoot it as much as I'd like atm. It's handloads-only of course, so primer and powder shortages have been a factor.

I am assuming the 10-round Wilson Combat mag will feed the .38-45 equally as well as the .45 ACP.