Has anyone got experience using these projectiles, So far I've tried them on Horse's, Camel's, Donkey's and Dogs.

I've found them to be poor performers, the last dog was about 60yds trotting straight away, the projectile landed in the left ham but did not exit, the dog was dead.

Results on the bigger animals was also less than expected as recovered projectiles had completely separated jacket and core with little penetration.

The attached photo was recovered from the off side of a horse just under the skin, shot at 80yds missed all major bones just clipped a rib going in, core and jacket were separated, I put them back together for the picture.

load them slooow (say 2300 fps) and they will work...

I shot & killed about 1/2 dozen or more buffalo cows & 3 pigs with out any issues.
I was pushing them at 2800 fps

I shot a moose and two elk with them and I thought they were a little soft and short on penetration, but jackets didn't seperate. I have had better luck with with the RN 300 gr. Hornady which was somewhat of a surprise.

The real sleeper has been the 250 gr. and 300 gr. Sierras, as Sierras are known for being soft, but these two bullets are not soft and they expand fully and are awesome killers on elk, and a favorite of the locals around Idaho who showed me enough recovered bullets to temp me into using them, and Bottington swore by them in his scripture!

Sure nuff, they have worked on everything I have shot with them and that includes one buffalo, an Eland and several Kudu and large wart hogs...Inexpensive and it works..

But on an expensive safari or big bear hunt, I could not bring myself to not use high dollar premium bullets, thats just good since and cheap insurance.

Barnes tsx 300g are currently selling from Midway for right at 94 cents per bullet. I realize the op is in Australia but surely even $2.00 per bullet isn't unreasonable for a hunting bullet, even for camels.

Thanks for the replies.

I was surprised when I read that one person had good success using the 300 Hornady SPBT on Buffalo cows, I certainly can't get 2800fps out of my rifle, so I wont be able to try that.

The Barnes 300 TSX's sell for $102/50 here in Aus. They work very well, but are hard to get.

In Aus we shoot these animals as pests, so while it may be more effective to use Barnes it does get expensive, hence the search for a cheaper and available alternative (Been waiting 3 months for 2 packets of Barnes 300 TSX's from my local supplier).
You guy's in the US don't know how good you have it.
The Sierra's did work better but supply like most shooting gear here is an order it and wait awhile, usually a long while.
Hornady's are available as we have a local national distributor here and I've been very happy with Hornady bullets in my other rifles.
I've taken to molding my own 375's using an LBT mold and these have proven ok as long as the range is not too far, generally under 200yds.

Thanks again

I also have had great results with the Sierra GameKings in 250 gr for my .375 H&H. Average 78% weight retention on Eland, Kudu and Bison.

Sierra Gamekings, and even the cheaper ProHunters, are very under-appreciated bullets. I don't know that I'd use them on Cape Buffalo, but for most game, they tend to be very accurate and quite lethal.