Ditto Sheridan. My expereince is that one or more factory loads usually show up to be a good grouping round in a specific rifle. Any of the bullets in your list placed properly are devestating to deer sized game. The key is the group.

One of the best examples of this showed up 3 years ago when I was helping one of the guys I hunt with set up a new scope/rifle combination. He showed up at the range with 11 different factory loads. Way more than I usually ttry. One grouped worse than any I have ever seen before .. a paltry 4 MOA. I coulod not believe it. But 3 shot group after 3 shot group .... same ... 4 to 5 MOA. That is pitiful.

Two were as good as most hand loads I have ciome up with ... a solid, repetitive 1 MOA or less. The other 8 grouped good enough to use about anywhere he hunts .... where shots are never beyond 200 yards or so.

I suspect you will find a winner ... without having to spend the coin to buy 11 different factory loads !!

Hornady lists the same BC as well as the same sectional density. That's something I could never figure out since the interlock/interbond hold together much better than the SST's at close range high speed. As far as my .338fed goes, the BC is quite a bit higher for the 200gr SST than it is for the Interlock. The SST is 0.450 and the Inter is 0.389. Pretty significant difference when I start getting out past 300 yards.

I used a 270 for about 25 years and shot a lot of whitetail, a few mulies and a couple antelope with it at ranges from point blank to over 400 yards. My favorite load was a 130 grain Nosler Ballistic Tip over 54 grains of IMR4350 and CCI200 primer.

Elementary, my dear Watson!

Since their names are so similar, that confusion happens a lot, but the InterLock and InterBond are very different bullets. The InterBOND and SST are the same bullet profile, the InterLOCK and SST (and InterBOND) are not.

Just to clarify quickly: Sectional Density is only dependent upon bullet weight and caliber. All 139grn 7mm bullets have the same SD, all 200grn 0.338" bullets have the same SD. It's nothing more than bullet weight (in pounds) divided by bore diameter squared (in inches). So it's a given that they'd have the same SD.

Regarding the BC differences:

The InterBond and InterLock are not the same bullet design. The InterBond is a polymer tipped bonded cup and core boat tail design. The Interlock is a lead tipped soft point cup and core flat base with an interlocking ring and interlocking cannelure.

The 200grn 338 bullets you reference are an SST and an InterLOCK, whereas the 139grn 284 bullets you and D80 mention are SST's and InterBOND's.

InterLock:


InterBond:


SST:

Any of those will kill any whitetail on earth. Get a box of all of them and shoot them all. See what groups best in your rifle and use them. Deer aren't hard too kill and they don't need premium ammo.

The Interbonds were (they are suspended now) a bonded core verses the interlocking ring design of the SST's I know. The interlocks and the SST's are virtually identical except for the nose design giving the SST the BC advantage. I'm just hoping the 200gr .338 SST's hold together better than the 139gr .284's did at closer ranges. I hate chasing down blown shoulder hogs! They tend to be a bit ornery that way

I perfer boat tail Interlocks and the B.C. is higher than the standard but less than the SST or the Interbond. Like Flags said they will all kill any whitetail.