I have several Marlins with Micro Groove barrels and they shot cast bullets as well or better than Jackets. One of my most favorite rifles was an old Sako Finn Bear 375H&H. I shot groundhogs with it but you didn’t get to watch hit through scope. Once Winchester folded in 63, Sako and Browning Safari replaced the M70 in my circle. Then Rugers m77 was popular for a few years. Now if buying new BA rifle it would be Sako, CZ, ect.
I forgot the H&R Ultras, also with Sako actions. A high quality rifle.