Supposedly, Remington has introduced a new premium bullet for use in its short magnum line of Ultra Mags. It's a redesigned Core-Lokt that sounds suspiciouly like a Speer Grand Slam in that it's got two densities of lead melted into a thicker jacket. This makes the new bullet retain at least 80 percent of its original weight after expansion and penetration. The reason for the bullet's introduction is that it is shorter and allows for more propellent insertion into the Short-mag's case, allowing Remington's round to effectively compete with Winchester's WSM.

Anyone know if Remington has released this bullet as a reloading component yet? I'd be interested in seegin how accurate it is.

GAhunter, me too, I'd like to try some in my WSM. With a shorter bullet and more room for powder, I'd bet the WSM would beat the winny mag in velocity.

I'm not going to hold my breath though, Remington can't decide if it wants to be in the component business or not!

------------------
if you run, you just die tired

I, too, am waiting to see the Ultra Core-Lokt. In my reading I had not heard of their using the hard rear core/soft front core approach of the Grand Slam; that is new to me. One writer did say that they insert an electrode in the molten core and pass current through it to plat the lead onto the inside of the jacket, thus bonding the two without solder or chemicals.

Speer Grand Slams and Mag Tips are shorter than many other bullets of the same diameter and weight, and may be good choices for the new short magnum cartridges. Nosler makes a 180 grain .308 Partition with a short, squared-off nose that should work well, also.

If you want a short stubby bullet try a 165 swift a frame. At 90% weight retention it will out do most 180's out there in the market place. You should get more initial speed out of the 165 too--but you'll need it cause its ballistic coefficient is like a grand slam (kinda low). I have had excellent accuracy out of the a frames I've tried.

I've found the Grand Slam to get 50 fps less than a boattail bullet out of the .300 WSM. For some reason it builds pressure fast. It's terminal effect is excellent, but its B.C. is poor. Unlike the A-Frame, it does expand nicely.