While prowling my favorite message boards I came across a fellow selling surplus .380 Mk 2z (38 S&W) ammo manufactured in India for the Enfield No.2 Mk1** revolver. Since I’ve not seen surplus .380 in over 10 years I jumped at buying x4 boxes (12 rounds per box) @ $10 a box. This is 178gr FMJ traveling at a whopping 700fps, Corbon step aside, lol. This prompted me to get my Enfield out of the backof the gun safe and take it to the range. At 15 yrds this ammo hits about 4” low and grouped into 2”, not bad. The original Mk 1 round for this revolver used a 200gr LRN bullet traveling at 600fps, Buffalo Bore stand aside…
Some time ago I came across some 190gr cast LRN bullets (sized to .359) intended for the 35 Remington. With 2.4gr of Unique these hit point of aim at 15 yrds, coming close to the original loading of 600fps. Telling me my revolver never had the sights re-regulated for the lighter faster round. Remington and Winchester factory 38 S&W ammo features a 145gr LRN bullet at 700fps, which hits at the same point as the Mk 2 ammo.
At this point a note on brass is important, Winchester and Starline brass is made specific to the 38 S&W and will only chamber in revolvers manufactured for the 38 S&W, while Remington 38 S&W brass/ammo will actually chamber in a revolver designed for the 38 Special (slightly smaller case diameter). The Winchester brass is noticeably thicker than the Star brass, causing a slight bulge if seating bullets too deep, while the Starline brass, with less internal taper, does not manifest this problem.
Since I’m out of 190gr bullets (should have bought more when I had the chance) my current plinking reload is 3 gr of Unique under a 158gr LRN @ ≈680fps in a Starline 38 S&W case, (the Winchesters cases are OK too if you don’t mind the small bulge). These too shoot about 4” low at 15yrds. Given these bullets are sized to .358” not the recommended .361” for the 38 S&W they still group well.
I may go dig around the machine shop at work to see if I can find a piece of aluminum stock that I can fashion a lower front sight from to bring up the Point of Impact (POI). But at the end of the day is always satisfying to take out an Old War Horse and put it through its paces.