The only split cases I have run into are old (I picked them up on the base range at Rota, Spain) GI .45 APC. This ammo was old when I picked it up in '69. I think the Marines were just using up old GI ammo. I got a 5 gallon bucket full, still using it. Occasionally I get a full length split after firing. I Don't think it is from too many reloads or pressure. Just old brittle brass.
SWCA 892
I've had a few .45 ACP cases--CBC stamped--that split, but other than that, mostly old GI (.30-06) brass that split the necks.