Lack of barrel crown?

[trick cyclist]

I have a CP1 that wasn't crowned at the factory, so it had a thin protruding lip from where the rifling had been formed. Shot all over the place. I used a dremel and grinding stone to give it a crown. Seems to work fine now. Brownells do a superb range of tools, but the 45 degree crown cutter with central bore guide costs £125. They also do some nice brass lapping tools for £12 or so.

[Geoff555]

Hello, well the pistol is a Daisy, OK I know ------------- space for laughter -------------. It has a rifled barrel but there is no crown just a square cut end which is a little rough, looks like a 'machining' action which was not finished. At 30 feet then about a 4" group but it was difficult because it was very cold and I was loosing feeling.
The group as such was high and left, such that I had to aim off target to hit it.
Am I exscpecting too much? I don't have many pistols Crosman 600's and a 357. Lots of rifles though.
Thanks chaps.
Cheers.
Geoff.