Just received a new QB 57

[Johnno5151]

I just received a new QB57 from ^&$@_=s. I paid for the Gold service and was pleased when the rifle arrived fairly clean ( a small chip in the stock varnish, but no biggie) with an accompanying 9 meter target showing the grouping and a Chrony report showing an average muzzle velocity of 705 fps with a deviation of 16 fps. The accompanying scope, of course, is in the trash and replaced with a BSA red dot sight. First impression is good for the price, a lot of fun to shoot, noisy, but with the Bull Pup configuration with the spring right under my ear, that was expected. Accuracy a bit iffy but I will have to shoot the rifle in for that to improve. I cleaned the barrel out (it was very dirty). Does anybody have any tips or additional steps to recommend. I would debur the crown but cannot figure out how to get to it beneath the muzzle brake and front sight assembly.

[GarthThomas]

You have to remove the muzzlebrake to get at the crown. How I do it is by taking a hair dryer not a heat gun or you will melt it and warming it up for about 15 minutes or so until I can turn it then take a piece of wood or something similar that you can hammer on without causing damage and knock it off, to re-install reheat and tap on. I've done this several times to my 57's and have not had any problems, I cut a slot in a piece of hardwood the width of the barrel diameter to spread out the force of hammering and it helped. Both my 57's improved after redressing the crown.

[Johnno5151]

Tried your suggestion Garth, but after 20 minutes of hair dryer but could not budge the muzzlebrake. My work around was to fit a Jewelers setting bur into an Exacto file handle (which fits neatly inside the muzzle) I could then rotate the bur and clean cut the crown. I then managed to find a long handled polishing cone, which i used to polish the cut. Test fired the rifle with surprisingly good results. I hope it will improve even more as it breaks in. Thanks for your suggestion. Perhaps the hair dryer wasn't hot enough ?

[PaperPunch1]

I have used only one pellet in mine (.22) and it is the crosman premier domes. Iht holds quarter size groups @ 25yds. Maybe if I had a better scope on it it'd shoot a mite better. The parallax setting is still a bit off @ 25yds.
PaperPunch1

[GarthThomas]

I use the hair dryer on high, if it can be turned by hand then it should be ready to come off. I don't know if I should say this but you may need to hit it harder. Glad it turned out for you.