Any meaningful difference in toughness?

Going to try them in a 358STA at about 2900fps.

They would be equal with the grand Slams, but the Hornady interlock is a better bullet than the hotcore speer IMO..and it might be a different story in a 35 Whelen, so caliber is the determining factor to one degree or another..The Grand Slam Speer was/is a great bullet..

what do you plan on shooting grizzlies or whitetails?

quote:

Originally posted by Mike_Dettorre:
what do you plan on shooting grizzlies or whitetails?

Agree Mike, if it's grizzlies I wouldn't use either bullet. I'd use an A-Frame.

After much consternation I have come full circle and concluded that I prefer Speer cup and cores to Hornady interlocks. Mostly because I prefer the tangent ogive design to the secant ogive and I seem to get better overall accuracy with the Speers. As far as terminal performance I doubt if there is enough difference to matter. The speers have a bit more up front as opposed to the interlock ring. Meh. If you need more, go with a bonded or partition.

When I was much younger I used a 358 Norma mag on moose regularly. At close range under 100 yds both the Speer and Hornady 250 gr would come apart with a fair bit of meat damage.I tried some 250 gr Partitions and they were much better but almost impossible to find. I found a couple boxes of Swift A frames that were 280 gr if I remember.They were the best. Less meat damaged and they always exited letting out lots of blood. Havent hunted with the big Swede for quite a while but I did try some Barnes TSX bullets in 225 gr. I would try the Barnes bullet on moose or elk but if big bears or other dangerous game is on your list the 280 gr A Frame would be 1st choice. The 358 STA is going to push most bullets 150 fps faster than the norma so I think you want to use a premium bullet on game

Which projectile would you choose for loading in a .350 Remington Magnum? … Say, for elk, moose, caribou, or AK bears?

You are not telling us what rifle you have the 350 Rem chambered in. In a short action the longer heavier bullets take up some of the powder space.For a short action rifle I would try either the 225 gr Barnes TSX bullet or the 225 gr Partion. If your 350 is built on a std length action those bullets can be seated out the 250 gr Paerition would be a good choice especially if big bears were on the menu. With a little lower velocity from the 350 Rem a std cup and core bullet like the Speer or Hornady may well hold together just fine.If you are are spending big $$$ on an AK hunt it doesnt make sense to skimp on a good bullet

Either bullet will penetrate deeply and it really depends on what your gun likes. My experience with the Hornady's has always had excellent terminal performance and exceptional accuracy.

The Speer 250 Hot Core from a .358 Winchester worked very well on an elk at about 50 yards with a muzzle velocity of 2353 fps. He only took 3 steps and dropped.

I've had very good performance with the 250gr Hot Cor in a 358Win shooting whitetails.

The Speer opens a bit faster due to shape I think as previously noted. Hornady spire point is a “hard” bullet at Whelen speeds which is also 350 speeds. Either bullet should work well for you on your target list. Pick the one your rifle likes best at 2600 fps.

The speer grand slams were great bullets on elk and most African DG..Mostly they have been discontinued regardless of advertising them for sale..according to speer..I have a supply of 285 gr. 375 grand slams and they have always performed for me in the 338 Win and 375s..great bear load at 2500 fps give or take a 100 fps according to a friend I sold a life time supply of them too.. some years ago..

Over the years Ive noticed in conversations and observation that a good number of hunters don't know a Grand Slam from a Hot Core and when the bullet fails with the hot core, they automatically blame the Grand Slam from that day on...Not pointing fingers at anyone just an observation..

Speer Hot cores are very good. Shot a few zebra with my 35 whelen. Great performance.