I clean my 452 barrels hardly ever, maybe once every 1000 rounds or so. And then only with a couple of loose, dry patches. Solvents aren't necessary in .22LR barrels unless you are shooting in competition and need maximum accuracy. Good luck.
Well kat ,
I clean mine when I am bored and I fancy looking at the quality of the twist and the lands,not really to help the accuracy which takes a bit to get back,I clean the bolt more to get rid of the fired powder,then every so often I run a piece of fly fishing line with a loop at one end down the barrel with a rag sometimes soaked in Youngs 303 oil,It takes roughly 25 to 50 shots for the accuracy to get spot on again,on the same note my brother's
10 yr old rifle aint seen anything in the barell other than bullets and has never had the bolt removed since new nor oiled,he treats his gun like rubbish,it shoots and performs the same as it did when new and still is unbeleivably accurate,even compared to my tweaked 452.His is the special or standard model but when he got it it was fitted with 2 action screws and no forward barrel screw at all,this may be part of the accuracy of this rifle.One other thing is he also treats his .243 Rem 700 BDL Varmint in the same sad way,a crying shame really even though it gets thrown in the back of a Land Rover.Whilst Im on about Land Rover's I may be buying my wife's Police land Rover in April saving me a small fortune...he he !