Honestly, don't think I have a firearm that the instructions didn't say no reloads and most say no cast. It's all legal jerkeze for we don't want liability... My buddy has a Kimber 1911 Compact with the crimson trace grip. He wouldn't let me shoot any of my reloads with 200 gr. RNFP bullets over 6 gr. Unique. One day, as I was shooting clover leafs with my .45 acp cylinder in my blackhawk he finally said, lemme try some of them... His kimber at up 5 magazines putting most into 3" at 25 yards and when we started hitting the gong, (10x10) at that range, zero misses. Zero miss feeds and only 1 fail to battery, which was we found out later his magazine had a little issue if filled completely.
High points are no different and if you find a cast they like, it'll do fine. I use .452 dia. in .45 acp versions with good luck in auto's, so making sure you aren't under fitting your firearm's groove size should be your only concern.
One thing I always do is run ACP ammo through the Lee factory crimp die. This smooths out any bulges, but keeps the mouth square for headspacing. I find that if you skip this, about 1 in 6 will not go into battery or in my blackhawks tight cylinder, won't drop in 1/2 way.