What is the difference in the new type Grand Slams and and a plain old Hot Core? thanks

The original type of grand slam was a lead core jacketed bullet with three types of jacket metal or metal thickness..different from Hot core which is melted lead poured into a jacket..

The old grand slams are no more, but midway has some of the old discontinued 275 gr. 338s on sale at $17 per box while they last..I bought a dozen boxes..They are one hell of a good premium bullet and tough tough tough..Great buffalo hippo or heart shot elephant softs.

This was one of several descriptions I found of the Grand Slam.

"original Grand Slam bullets had a two-piece core with the rear being harder than the front. Now, Grand Slams feature a three-component core that is poured into the gilding-metal jacket and flows into a heel pocket. Essentially, the Hot-Cor process, along with the added mechanical lock (at the heel) and thick shank, results in 80 to 85 percent weight retention. Internal fluting makes upset possible at a wide range of velocities, and a higher ballistic coefficient than Mag-Tip slightly flattens trajectory. Grand Slams have a cannelure for applying a crimp and are suitable for the largest game in a given cartridge’s application; however, with the enhanced performance comes a significant increase in price."

Tanks for the replys.
I got a box of .284 175 grains and i think i will disect one and see how it looks. lol thanks again