I own a Challenger 2021 and have shot two others. All were what I would call scary accurate. They're probably the best rifle Crosman makes, along withe the Benjamin Marauder. I don't know about the raw triggers, but the Crosman is an almost exact copy of the Theoben trigger and amazingly well done. Remove the lawyer spring and it's one of the best true two stage triggers around. Heck I wish FX would adopt the Crosman trigger!
Everything is top notch about the gun with two very minor gripes. One, the barrel is free floating in the barrel band and sometimes makes a clanking noise when you hit the barrel, easily fixed with electrical tape. Two, the rifle makes a funny Crack when fired, much like Air Arms target rifles do. Again it's not lot just a bark.
The rifle is an absolute dream to shoot, and 10M rifles are so easy to have fun with and this one is much lighter than most so not so tiring.
Of the three I've shot, mine had far and away the best factory target but all three shot fantastic. Mine will make true one hole groups at will all day long and it seems like you never have to fill it. The regulator is fantastic too, I'm getting a fair bit less than 10fps spread over many, many shot, but no way will I do a full shot string, because I have no idea how many hundred shots that would be.