I've talked with a guy face to face who has used them and read a few dozen average joe reviews and all say if your rifle will shoot them tight they will put a fist sized hole in anything from deer, to hogs, to elk. I saw a photo of a heart shot elk that literaly had its heart blown in half.

The regular Failsafe worked great on elk even with a 270 win driving it . This slightly modified version is probably a tad better aerodynamically.

Exactly what I killed my Elk, Mullie and White Wolf with!

I like Barnes TSX's myself, but all the bullets mentioned here will do a great job on elk.

The Nosler 150 Partition or Barnes TSX would be my choice. I have used the 130 Barnes X Bullets with excellent rsults.

I've always used the Win. PP 150 gr. and have had great performance at close ranges.

One bull I shot at 64 yds through the lungs bullet passed through.

Second shot in lungs just a little further, the bullet was picked from the offside hide.

Another time around same yardage shoulder smashed and no recovery of bullet. Bull required a quick second shot and he was done.

I'd say great performance

If "BTSP" translates to a Ballistic tip bullet I wouldn't use them. (bad personal experience)

According to my dad the plain ole 130 gr. Remington CoreLokt bullets work very well on elk. Personally I wouldn't take anythingless than 140 gr. Partitions or equivalent.

Boat tail soft point

I would definitely switch bullets. I had used 130 gr. BTSPs, more precisely Sierra Boattails. I killed one elk and several bucks with the bullet. What I discovered over time was that the bullet has a tendency to blow up into shrapnel at close range and high velocity ON DEER. I shot bucks at 35 and 25 yards, hit major bone on each shot, and the bullet blew up. Now, it killed both animals but I wonder how the same shot would have turned out on elk. My only elk kill was 350 yards, so the bullet had shed velocity by then and made for a nice one-shot kill.

Both me and my stepdad have changed over to Scirocco bonded bullets, and have now killed multiple elk with it. I got a clean pass-through on a huge cow elk last year at 90 yards.

That summarizes the data I can offer. I would lean toward the 150 gr. Nosler Partitions, in fact I am going to try the Federal Premium version this year and if they shoot well out of my rifle I may switch.

you are getting close to religion for lots of folks....suffice it to say, that anything that is bonded, and not highly frangible will clearly knock a bull down...

stick with high quality proven bullets, not fad bullets and you will not be disappointed...