Can't speak to the 45-70 but have used the 30-30 stuff.
It has a flexy tip so you can run their pointed bullet in a tube magazine.
Does it shoot "better, stronger, faster" - no, seriously it's a 30-30 - never meant to be a ballistic wizard. It's still a 50 yard brush gun that, in a pinch, is usable out to 100 yards.
I see this ammo is another one of those products that solved an issue that didn't really exist. The old "cowboy calibers" shoot slow bullets at close range, so while improving the aerodynamics of the bullet itself certainly doesn't hurt, I just don't see it helping much in the limited range these rifles are shot at.
But if the price is good and the product is available (when others aren't) I would use it again - just not willing to pay a premium for something that provides (me) with zero added value.
Even today a 30-30 Model 94 shooting a 170 grain round nose lead bullet still probably has a 5:1 kill rate on whitetails over everything else on the market in all calibers combined - and probably 99% of all whitetails are shot at distances less than 100 yards - don't need "superior ballistics" to do that.
Well cousin, I realize we run a great risk of running afoul of the strict guidelines set out by the OP, but I just couldn't let this go.
"Does it shoot better,stronger, faster,-no."
Lets state some facts abut the 30-30. I have chronographed old Dominion 30-30, 170 grain bullets, from about the 1950s and found they gave a velocity the 30-30 was designed for, right around 2200 fps. I'll have better information in a couple of weeks, but I have reason to believe that modern factory loaded 30-30 ammunition give about 1900 fps.
The power given with reloads using maximum loads as shown in modern loading manuals is at least as dismal, with some that are likely under 1900 fps.
I have not used, or tested, the factory loaded Leverevelution. But I have used and tested the LVR powder. Hodgdon on line show 36.3 grains of LVR to give a 170 grain bullet 2332 fps. In a 30-30 I had, this charge gave 2256, which is somewhat less than they claim, but still far and away better than any other hand load in the manuals.
When I upped the LVR powder a bit to get the velocity Hodgdon claim, 37 grains gave me 2320 fps.
This could easily be 400 fps faster than one will get with the average factory load, or a hand load, using other powder at the amounts shown in modern manuals and that is a huge gain. And by the way, my top load of LVR gave a very tight extreme spread.
Bruce Lamb