I absolutely agree, back in the mid 90's my 378 WBY developed a slight bulge at 12 o'clock between the top two cuts of the magna-port, I believe magna-port used to make the cuts a bit larger but stopped on the smaller contour WBY barrels.
Anyway, I had the Smith cut the barrel to 24" and recrown, already had the rifle steel bedded in a Pacific Research syn stock [IIRC they were later Rimrock stocks], without the magna-port and in that syn stock that 378 WBY was the rudest and loudest weapon I have ever touched off to date.
The 300 gr Partitions and a very large charge of IMR-4350 plain sucked from the bench.
Gunner
