For a given powder charge, jacketed bullets have a higher pressure than lead or plated bullets; the harder jacket doesn't deform to the rifling as readily--creates more friction/resistance to movement, and thus increases the pressure.
So, using loading data for jacketed bullets--but actually loading the softer bullets--won't hurt anything. Probably get a bit higher velocity.
The primary critical factor in OAL for a revolver is that the nose of the bullet not protrude in front of the cylinder. Other factors, such as compressing the powder charge and suchlike are less important for the .38 Special. A light crimp at the cannelure and you oughta be okay.
Check out the various ads in a Shotgun News or go to a friendly local gunshow for bulk bullets. I'd recommend using stuff around 125 grains in a semi-wadcutter, over a round-nose. Better all-around bullet for plinking or hunting.
Hope this helps, Art
|