I've never killed a elk, but I've used the 165's out of a .300wsm with great success on brown bear, moose, goats, deer and sheep. I like the TSX, but the TTSX is my favorite bullet to use in all my rifles, mainly because they group so well, and I've had great results using them. I wouldn't want to use them to break down the shoulder of anything that I'm planning on eating though, too much meat loss IMO.
I have killed one elk, a couple antelope and a deer with the Barnes TTSX 180gr out of my 300wm. What makes Barnes and other monolithic bullets good is their weight retention, which translates into penetration. When a monolithic bullet hits bone it will hold together much better instead of exploding like most lead bullets. With all four animals, I saw great terminal performance, and none went more then a few yards.
However there are a couple things to think about when using Barnes. Barnes bullets are 100% copper making them softer then most jacketed bullets that use a gilding metal (95% copper and 5% zinc). This will cause greater copper fouling in your barrel. This can be a real pain to clean, and if not cleaned will effect your accuracy. I figured this out the hard way.
The other thing to keep in mind is impact velocity, all monolithic bullets require greater velocity to mushroom then lead bullets. If I remember correctly around 1800fps is the slowest impact velocity Barnes recommends, but faster is always better. When doing load development with a monolithic bullet I will set my effective range based on when the bullet slows to about 2100fps. I set it at 2100fps to have confidence in the bullets performance. With my 300wm, that’s a little over 500 yards and with my 308, it’s about 350 yards.
The other thing to keep in mind is impact velocity, all monolithic bullets require greater velocity to mushroom then lead bullets. If I remember correctly around 1800fps is the slowest impact velocity Barnes recommends, but faster is always better. When doing load development with a monolithic bullet I will set my effective range based on when the bullet slows to about 2100fps. I set it at 2100fps to have confidence in the bullets performance. With my 300wm, that’s a little over 500 yards and with my 308, it’s about 350 yards.
Hope that makes sense.
[/QUOTE]
Similar I call it quits at 2200 fps for Barnes TTSX.
Yep, just make sure impact velocity is still decent and it should perform very well and out penetrate bonded lead bullets. I will also suggest being careful about too high of velocity through meat. The thing about these bullets is they maintain higher velocity through the animal and can cause a lot of blood shot. At least that is my theory of why the lungs and heart often turn to soup.