Every gun from any time period is an individual. If you get one that doesn't shoot tight groups with quality ammo, it's most likely the muzzle crown and/or the forcing cone. Both of these can be recut to perfect in 10 minutes.
Basically agree with what Protocall Design said. I haven't used one of the new 648s but can't imagine that they're not accurate guns. Might vary a bit on ammunition brand; some like certain types better than others. The older 48s are all great guns too although you can likely buy a new 648 for less than a used 48.
This no dash 648 with a little finish work is more accurate than I am by far. Not all that difficult to carry scoped either if you have old eyes like mine and need optics. Good luck.
How accurate are the 648s?
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