It contains data culled from newspaper boxscores, covering league sanctioned games from 1920 to 1948, which was produced for a study sponsored by Major League Baseball and the National Baseball Hall of Fame and Museum.

The .38-40 Winchester (10.17x33mmR) is actually a .40 caliber (10 mm) intermediate cartridge shooting .401 in (10.2 mm) caliber bullets. The cartridge was introduced by Winchester in 1874 and is derived from their .44-40 Winchester.

Super-X Soft Point Bullets are designed for rapid, controlled expansion and maximum impact. The 38-40 WCF Super-X ammunition is recommended for thin-skinned big game such as Whitetail Deer, Mule Deer, and Antelope. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases. Was the information on this page helpful?

Use code AMMOSEEK for $10 off your first order. No minimum purchase. Additionally, you may want to sign up for a free account so you can save searches, set alerts, exclude retailers, and …

Winchester offers a wide range of rebates throughout the year – see if your favorite Winchester Ammunition products are eligible for a rebate. Customize the shooting conditions in the ballistics calculator to replicate ballistics performance in your own shooting or hunting environment.

Browse our 38-40 Winchester Firearms on BudsGunShop.com. Our everyday low prices making shopping for your Firearms quick and easy.

Actually, .38-40 factory loads were introduced with a nominal .400-inch bullet so it is in fact, a true .40 caliber. The “40” in .38-40 supposedly stands for 40 grains of black powder, but at least some of Winchester’s own factory loads carried only 38 grains.

Originally loaded with black powder, the 38-40 is categorized as a low-pressure round. But should it be? Understandably, SAAMI spec capped pressure at 18,000 CUP since the early guns (as well as modern clones) aren’t strong enough to handle any more. But a …