[lurkingknight]

with each setup, take a range reading at 50 ft, 100 ft and 150 ft from there you can extrapolate the cone of fire and calculate the grouping size relatively accurately imo. If you need to make a shot beyond 150ft, you'll have a lot more to worry about than hopup accuracy, and imo it's pretty uncommon to engage at that range effectively.

I have done a non scientific test between a madbull 6.03 using a pdi W hold and an IR hop with mnub.

Power is power, you can't get more than what is there in a 400fps setup, so you aren't going to see magical range increases, and in my test, I didn't. What I did see was flatter trajactory at higher hopup settings, where a standard setup you would see a pronounced hump in the flight, with Rhop it was much flatter throughout the range. Only at the more extreme settings you would see a more pronounced hump in flight.

Grouping sizes did shrink, and it was definitely a lot more consistent with fewer fliers, but without actually doing it indoors with paper, I can't give you a measurement.

I was using .25s and .28s up until the rhop install, now .28 is the lightest I use, going up to .32s

Also, there's a lot of skewed data, people install R-hops immediately on the gun without addressing air seal problems... R-hop is something you do when your fps variance has been reduced to <5fps from shot to shot. It's normally not the first mod one does to a gun, more like the last mod... but before dsg of course. :P