The yellow plastic tipped bullets I've seen in 8mm, loaded by my buddy for his 8x68S were the Dual Core and worked perfectly on moose.

I did load and try some 286gr. yellow plastic tipped Normas in the 9.3x62, but only for a load testing. They shot just fine and into an inch at 100 meters in my old 9.3x62 Oberndorf Mauser.

I loaded up the 286gr. Alaskan RN for my bro in his 9.3x57. I think he's going for moose with it in November. He has his hold settings for out to 300 meters. Considering he's unlikely to have to shoot past 100 meters, he's good to go in any event.