I’ve looked for one of those European P220’s in .38 Super for some time.
As far as caliber diameters are concerned, I’m still trying to find out why the .38-40 (.38WCF) is actually a .401 diameter.
***I’m still trying to find out why the .38-40 (.38WCF) is actually a .401 diameter.****
I bought an 1873 Winchester rifle in .38-40 back in 1968. I found ammo at $20.00 for a box of 50. That is 1968 prices when .38 spl could be bought for $3.00 for 50 rounds.
It shot ok for a cartridge loaded for pistol pressures. I found that Winchester chambered the barrel extra deep so the case would blow out and split at the neck so you could not reload them.
I sold the rifle ten years later to keep from starving.
Many non-gun tech types seem tothink that firearm calibers are representatives of teh numbers in teh cartridge name. They usually are not.
The 38-40 being just another exception to the rule that all exceptions. I have no details on why the 38-40 indeed has a non-standard .400/.401 groove daimeter, and probably should be called the .40 or .41-40 vice .38-40. But it does have a better sectional density compared to the 44-40 200 grain slug and therfore should penetrate better, but I’d prefer a 200 grain slug over a 175-180 .40 cal if required to use BP arms of that era as they all generated about the same muzzle velocity due to the limits of BP burn rates and pressure curves.....
Try ‘splaining why a 5 inch 38 caliber gun is not a 5inch barrelled .38 spl. rather, it is a 5 inch bore, 38 caliber in length barrel ( 5”x 38= 190” barreled) naval gun....