After reading about another member's practical/tactical trainer rifle built around a Stiller 2500XR action, and seeing Euro Optic's ads for their version of a 22RF tactical trainer using this same action, I decided to go this route instead of turning one of my CMP 40X RF rifles into a repeater. I already had a Krieger 22RF blank in Rem varmint contour & a PTG Ultimate EPS reamer that had been taking up space out in the shop for several years - and since Stiller had the actions in stock, it didn't take long to get one. Also had a spare Manners T4A stock in molded-in woodland camo color/pattern, and a Timney Calvin Elite trigger. Only tooling I had to purchase was a slotting saw & arbor for the mill.
This was the first - and so far only - 22RF bbl I've done, but by taking my time and studying the breech drawings for the Stiller action, things turned out well. I'm really enjoying shooting this rifle, whether prone at 200+yds on steel targets, or from improvised positions common to PRS-style shooting that I do with my CF comp rifles. My two main comp rifles are built on Bighorn TL2-SA actions in T4A stocks, so weight is very close (24" RF bbl vs 26" CF being the only significant difference). The 2500XR rifle's weight is just over 13.5lbs, while my Bighorns (6XC & 6.5x47) weigh just a hair over 14lbs with 34mm Kahles K624i scopes vs a 30mm Bushnell ET6245G scope on the Stiller. There's virtually no recoil to mask a mistake in breaking a shot with the 22, and very little muzzle report to cover the sound of a hit on swinging 1/4" AR500 steel targets. Am really looking forward to getting the tax stamp for the SWR/Silencerco Spectre II suppressor I bought - since I'm shooting only std vel match grade ammo, it should be sooo quiet that I won't even need the foam ear plugs I'm currently using.
Best part about having this 22RF trainer is that it motivates me to grab it, a couple boxes of Wolf Match Target, some props like my backpack, hog saddle, etc, and get out to work on my position shooting, all the while knowing that the rifle/ammo combination removes all doubt about whose fault it is when steel isn't hit. If I were doing it all over again, I'd go the same route - love the Stiller 2500XR action/Krieger bbl/Manners stock.