I too am a 270 user and a handloader.
The second pic is a recovered 180 gr Barnes X bullet( fired from 300 Win mag) although that doesn't really matter. This is very Typical, some expansion, but designed for deep penetration.
The first bullet is a 150 grain Nosler Ballistic tip from my 270. It was a front-on shot and the bullet was recovered in the lower intestines, so it did some traveling

I've been using the Noslet Ballistic Tips since they began,before that Speer 150 Gr BT.
I have not loaded the Barnes X bullet as I don't have anything larger than moose to hunt, ifI'm lucky. The NoslerBT has both expansion and weight retention, high coefficiency and above all my favourite bullet.

I guess what I am thinking is that if I use the Barnes triple X Bullets which appear to have a little better stopping power I can use a smaller bullet which in theory should give me a little less recoil.

I was looking at the bullets the other day and found a place that stocked them but only in the 110gr or the 150gr. My BAR really liked the Managed recoil loads for accuracy but refused to autoload them. So I was thinking if I used the 110gr triple X bullets I could use a full powder charge with the 110gr bullet and theoretically get great results in recoil, stopping power and accuracy.

But since I am new to all of this I really don't know if my assessment is accurate but based on the information I've learned over the past few weeks that would seem to make some sense at least .

I shot triple-x for a while and I have nothing but good to say about them. I never recovered a bullet from game but the game never ran either. The bullet did what I wanted it to and then some. How it expanded is anybody's guess but I'd say it was OK.

Here is a Free Recoil Calculator that will instantly provide you with the numbers

http://www.huntamerica.com/recoil_calculator/

The Barnes X are popular with the Elk hunters around here.
I've never used them but, the recovered bullets I have seen look very similar to the picture Hammer1 previously posted with very high weight retention. I'd say 85% or better. 30 and 33 cals.