I have been using the 250gr norma made bullet since I had many. Shooting in a 358 norma. This year I tired out the barnes TTSX style bullets, they have polymer tip. 1st in .338 in a RUM 185 gr. They shot great, better than 210 and 250 gr Noslers. So, I tried the .358 200 gr. in the Norma. So far, I have fired around 30 rounds. They also shoot great. The target I kept, shot 2 rounds 1/2 inch at 100 yds. Than 2 more that opened the group to 1 inch side to side, just over 1/2 top to bottom group. On game, no reports yet. Son missed 2 elk.
In the .338 the 185gr. I shot 1 round it was a though/though shot in the elks ribs at angle behind the heart. It jumped, turned and fell dead. Around 75 yards, most bullets in that caliber might have preformed just as well with that shot.
A buddy got me on the Barnes TTSX bullets, he has recovered some while in Africa last year. Some were in a .338 win mag and some I think from his 9.3. They all held together and mushroomed great.
I was a die hard Nosler partition guy in the Elk hunting guns. The Barnes TTSX are as good or better with the results so far from my buddies recovered rounds.
I take it your looking for bullets not ammo, there are many. For hunting, make sure your buying bullets designed for the higher velocities. Not the 35 Remington. For example Speer makes a 180gr that will be OK for shooting paper not so good at large bodied game in the Whelen/ Norma cartridge speeds.