Will 8-round magazines fit into the high-capacity Makarov?
Yes, they will fit and function. They may be loose at the base, but our experience is that they work flawlessly. Since many 10-round magazines are bad at feeding well, we used to have an extended magazine floorplate for the 8-round magazines that will keep it from flopping around so much in the high-capacity Makarov and make it easier to remove.