AK Bullet Works makes first rate bonded core bullets. I have used them in the 348 Ack Imp and a 450 Fuller pre---war Model 71. The Fuller has
a reduced shoulder angle for smooth feeding. The 450 Fuller cartridges will feed and shoot in the other 450 AK I have-also a 1930s M-71.
I have used ABW and Hawk-400 gr FPs. They work well on moose and bear.
I have owned a 50 Alaskan-but its accuracy did not measure up, so I returned to carrying the 450s. The advantage is fast handling-fast repeat shots.
The 35-348 might have made sense years back-but now Woodleigh, Swift, Hawk-AKBW all make tough bullets in .348, so the manufacturers
have gotten better with their bullets. A 348 Ackley will equal a 35 Whelen now with these tough bonded core bullets.
