I have a very accurate 22CM. Only bullet I've been loading/shooting is a 75 eld-m.
77 LRX has been unavailable until recently, so probably not a lot of info circulating.
Got some LRX and 75 Scirocco pressure loads worked up, just a matter of shooting them up. Should be able to let you know how things turn out in the approaching weeks. One of the two bullets will end up as my antelope and deer bullet for that rifle. Plenty of BC, btw.