I have three pistols chambered for 38 Super - a hi-cap Caspian, a Series 70 Colt, and a pre Series 70 Colt. Factory ammunition drops easily into the chamber in all three. My reloaded rounds(Dillon 550B with Dillon dies) don't fit the chamber of the early Colt. You can't even push the round all the way into the chamber with moderate finger pressure. Does this sound like a slightly out of tolerance sizing die or a tight chamber?
For what it's worth, the Caspian has a Schumann Ultimatch barrel with an EGW comp and shoots great with an 88 grain Remington jacketed hollow points over 6.9 grains of W231. About 1550 fps and groups 1" (occasionally slightly less) at 25 yards. The combination of a light bullet and high velocity keeps the muzzle just about flat, target acquisition is very fast, and the plates fall down just fine.
For what it's worth, the Caspian has a Schumann Ultimatch barrel with an EGW comp and shoots great with an 88 grain Remington jacketed hollow points over 6.9 grains of W231. About 1550 fps and groups 1" (occasionally slightly less) at 25 yards. The combination of a light bullet and high velocity keeps the muzzle just about flat, target acquisition is very fast, and the plates fall down just fine.