Cleaning the PTR is easier than any other rifle I own, other than bolt guns. You just need to get the two brush set from E&L, the little cleaning rod, and the chamber flute brush, and the bore guides sold by Convert over at the HKpro dot com.
First remove the buttstock and FCG. Wipe down the hammer in the FCG. Then take a properly sized piece of T-shirt material, wrap it around the square profile brush from E&L. Squirt Mpro7 on it, and run it up and down the receiver and the magazine well. Be sure to run it into the trunnion. It will be all nasty and black. Repeat one time. Then using the funnel shaped brush and a 12 ga patch with Mpro7 on it, hit the breech face.
Use the fluting brush dry a few strokes in the chamber, insert the bore guide and clean the barrel as you would any other.
Remove the bolt from the carrier by gently twisting in a counter clock wise motion. Wipe it down with a shop towel, and use the GI toothbrush where needed. Wipe down with a clean patch with CLP or whatever lube you like, and reassemble. Voila!
I can clean that thing in about 20 minutes, 15 if I hustle and don't let the bore cleaner soak.
The key is to have the right tools!
Recoil is not bad for a 308. It seems to me from a prone position that the recoil in my rifle is a little bit more than a AR 15, and less objectionable than a AK47. One of the other contributors points to bolt gap, and that is critical. Mine is about .017" or so and it is sweet as can be. Kicks less than a FAL I shot at the range, and certainly less than the M1A I made expert with.
Not everybody likes the same thing, but this will be the last rifle I sell.
---Oh! Don't forget the 22 long rifle conversion kits that make everybody smile, and are a great way to introduce kids to the joys of shooting.