I don't shoot a RPR, but do have some opinions on LR rifle setups. The RPR is proving to be very popular. And probably for good reasons as the accuracy is supposed to be quite good. The RPR will always be somewhat of a target rifle though, due to it's weight and bulk. It is also restricted to short action non magnum calibers that are normally not used for LR hunting.
A very important aspect of a LR rifle setup is how it fits you and your preferences and shooting style. The RPR has a classic AR15 stock style with a pistol grip. That stock style is not always good for LR shooting as some shooters cannot get the consistent and precise grip needed on a pistol grip stock for good LR shooting. I am one of those folks. Probably due to the fact that I didn't grow up shooting AR15 style rifles. For me a more traditional stock with a grip contoured for LR shooting is best.
A traditional stock allows a more consistent grip and also a more relaxed grip without too much muscle stress and a natural place to rest one's thumb. This is all important in LR shooting. Take a look at a F-Class match sometime, and notice how many shooters are using a pistol grip. There will probably be zero. Now look at a precision rifle match and you will see many more pistol grips in use. This is probably due to the need to control the rifle while running around and shooting from precarious positions, not for enhanced accuracy. What is important, is that you are comfortable with the style of stock that you choose. If you shoot AR15s and love the grip, the RPR would be perfect for you. If not the pistol grip will never be comfortable shooting LR.
The RPR is pretty much made to shoot from a bipod. It probably does not shoot from shooting bags very well due to the round barrel shroud. Notice a rifle designed for LR shooting and will notice the more flattened forearm. This is designed to allow the rifle to rest on shooting bags without canting easily during recoil. When you are working up loads and practicing LR shooting and trying to get that extra bit of accuracy out of the rifle, you will probably be better off using shooting bags rather than a bipod. With the RPR you are pretty much stuck on the bipod. I think they do make some sort of attachment for it now with a flat bottom though.
Hunting - The PRP is currently only offered in short action non magnum calibers. Who knows if Ruger will ever offer something like a 300 WSM for effective LR big game hunting. So if you ever venture into LR big game hunting the RPR will quickly lose its appeal.
Savage makes a rifle marked for LR target shooting that competes with the RPR. It has actually been on the market for several years and is a proven performer. It's the Savage Long Range Precision (LRP). IMO it has some advantages over the PRP - It has a traditional stock that is designed for LR shooting with a good vertical grip and wide forearm for riding bags. It can also be easily shot offhand too. With the Savage LRP you can easily change out the barrel and bolt face and make it a 300 WSM for true LR hunting capability. You cannot do this with the PRP.
So in summary, the RPR is a great rifle if you prefer pistol grips and never plan on converting it to a more powerful LR hunting rifle. IMO, you should also take a look at the Savage LRP.
One more thing - triggers- IMO opinion the Savage has the better trigger. The Ruger is a copy of the Savage trigger. The Savage trigger though can be adjusted down to about 6 ounces. The RPR trigger only goes down to about 2.5 lbs. A light trigger can be wonderful for LR target shooting.
The 6.5 Creedmoor is proving to be the perfect cartridge for rifles like the RPR and Savage LRP. This is all due to the excellent support provided by Hornady. The match ammo for it is excellent and not too expensive.
I shoot the Savage LRP in 6.5 Creedmoor, in case you couldn't tell.
Good luck with whatever you choose and welcome to the forum.