Question about M3 and resolution

Should I be able to resolve individual stars in M3 on a dark night, with M3 sitting about 40 degrees above the horizon, using an old coulter 13.1 inch, f4.5 newtonian with a 9mm plossel ep? In the same vain, should I expect to see any structure in the larger and brighter Messier galaxies, other than just a fuzzy lump?

You should be able to resolve M-3 with your 9mm EP "163X". I can resolve most of the stars with an 8inch reflector at 120X. You may have to use averted vision to see the tiny stars. In very dark skies you may be able to see some structure in the larger and brighter galaxies. In my 10 inch f/10 refractor at 250X "10mm" M-3 is resolved deep into the core. Some structure of M-51 can be detected and a handful of other brighter galaxies. Even my toy, XT 4.5 can resolve some of M-3. nearby is M-53 and is a little less condensed but dimmer. Let us know what you see.......

I use an 8 inch reflector, f/6 and it resolves M3 to the core at 240x. It largely resolves M3 at 165x. I can see some structure in M 51 and M81 and M 82, began to see the dark lane in M 64 last month. If you can't, in your 13 inch it may be a problem with collimation or the mirror.