For starters, it's 98% marketing hype from Remington. There are significant differences between shotguns and rifles.
These aren't laser guided smart bombs either. So, they're simply tinkering with bullet weights, burn rates, and velocity for generic test barrels. They can't guarantee you that any one or all of their factory loads will be the best or even a good load in your rifle.
But if I wanted to develop some different "power level" loads with similar POA/POI, here's how I'd go about it.
First, develop your best long range load with a heavy/high BC bullet at the upper accuracy/velocity node.
Then for "lower power" loads, I'd go to a lighter weight bullet (less power/recoil) and work up from a minimum load until your POA/POI at your zero distance is similar to the first load. ...the rest of the trajectory curve will be different. Do your fine tuning with seating depth.
If you're a tinkerer and want to analyze more completely, you can use Quick Load or other ballistics programs to speculate about the ballistics curves and match impact velocity to the terminal performance characteristics of the bullets you're considering in order to set your target MV for short/medium/long range with the light/medium/heavy bullets.
Repeat for as many loads as you like. ...although, the rifle would be plenty comfortable to shoot with your best load if you'll get a good muzzle brake. So, wasting all of the money, time, and barrel life won't be necessary.
In the end, your prey will inevitably appear in your sights at the wrong distance for whatever special load you have chambered. Or worse yet, you'll use the wrong trajectory curve for the ammo you have chambered.
At most, I'd be looking for a long range hunting load and a target/varmint load. Since I dial the turrets and use a drop chart, I don't much care if the load has the same POI at my zero range.
JMO
-- richard
