Only "problem" I had with the 9.3x62 was misfires with some factory loads. A Ruger African misfired with Vortex 286 TSX factory load 20% of the time. A CZ 550 FS I gave my SIL does it too. To be "99.9%" reliable , fireformed or once fired cases would be my choice. I had a Walther Lothar barrel put on a Mod 70 FWT and it was perfect. I had another Walther Lothar barreled custom 404 Jeffery ( again, that long sloping shoulder) that misfired with RWS factory ammo. Its a pain, but fireformed cases can save a hunt! I used a 35 Whelen Ackley for 20yrs, shot Plains Game with it and the 250x then the 200x...one hog with a 310 Woodleigh soft ( just for grins) and I always felt it was closer to a properly loaded 9.3x62 than the standard Whelen. Have a ball Pard!
I've had misfire issues with the last 3 Hawkeye Africans I've purchased. I now disassemble and clean the bolt, and add a 24lb firing pin spring as standard procedure - no more issues.
