Iam using are Hornady sabots 44-240 hp/xtp. One question I have for you is should I shoot a heavier bullet for elk or is 240grn enough?
I think you might have a great deer hunting load there. And it would do fine on thin skinned animals. Still,if it were me and I had to hunt elk, I would look for something heavier or at least not a hollow point. Elk need some real penetration. A hollow point like the XTP might open too early and not penetrate and do enough damage. If I wanted to shoot a hollow point for the damage/expansion concerns, I would look at some 250 grain Barnes Expanders. I might even look into the 300 grain Barnes Expanders just for the extra weight. Plus Barnes seem to be able to be pushed hard and they still fly true. And they have a controlled expansion so they tend to penetrate just fine. I shoot the 250 grain Barnes Expanders in my Knight and it is all I will hunt with when using that rifle. The accuracy is exceptional.
Another bullet that is often mentioned by the elk hunters is the 300 grain Nosler Partition. These are used by many people because of their deep penetration and controlled expansion. I am sure there are people out there that shoot the Nosler that can give you some possible load information on them. The Noslers Art was shooting I think would be accurate. If he had more of them and would leave his rifle with me..

I'd be more then glad to test that theory for him. I think after he was kicked around like he was, he got gun shy.
I once suggested to a person to use the 375 grain Buffalo Bullet SSB which they did. They used 110 grain of Triple Se7en and harvested a nice cow elk. I have "heard but not verified" that Buffalo changed the bullet and sabot making them harder to load. So until I learn more from Buffalo I will not recommend them for the time being.
You also have the option of large conicals. The 460 grain No Excuses, the maxi ball, Hornady Great Plains... all of them might shoot well out of your rifle. You would have to try them. Large conicals punch large holes and penetrate good.
I was real impressed with the rifle. I hope I get a chance to shoot it a lot more. If I hear of any good loads for it, I will let you know... Good luck elk hunting..