Hello, and welcome to the Reloading Podcast here on the Firearms Radio Network.
Tonight the guys are discussing over pressure signs.
Over pressure discussion: (Indications of, signs, things to watch out for)
Discussed at length, all the rest of the questions can be used for next week’s notes.
Cartridge Corner Notes:
The .38-40 Winchester is actually a .40 caliber cartridge shooting .401 caliber bullets. The cartridge was introduced by Winchester in 1874 and is derived from their .44-40 Winchester. This cartridge was introduced for rifles, but in its reintroduction for Cowboy Action Shooting it has seen some popularity as a pistol cartridge. It is not particularly well suited to hunting larger game, but it was popular when it was introduced, along with the previous .44-40 Winchester, for deer hunting. It can be used successfully on smaller game animals, and for self-defense. Current loadings are intended for revolvers.
It is unclear why this cartridge was introduced as it is very similar to the .44-40 from which it was derived. It has approximately 110 ft⋅lbf (150 J) less muzzle energy, and has a muzzle velocity about 110 ft/s (34 m/s) less than the .44-40. The bullet differs by only .026 inches in bullet diameter and 20 grains (1.3 g) in standard bullet weight from the original .44-40. The goal may have been to reduce recoil while maintaining a similar bullet sectional density. One unusual design element of this cartridge is that factory ammunition was loaded with a different case profile than the standard chamber for this cartridge, factory ammunition having a much longer neck than the standard chamber. Most reloading dies are designed to size fired brass to the chamber specification rather than that of the original factory ammunition case profile.
The renewed interest in this caliber can be explained by the increasing popularity of cowboy action shooting and metallic silhouette shooting. Several single-action revolvers have recently been chambered for this cartridge, including the Ruger Vaquero. Most modern reloading data for this cartridge is found in the handgun section of reloading manuals.
This information was extracted from this Wikipedia Page:
Personally I have had a wee small bit of experience shooting it, but I don’t own the revolver that I was shooting. I’d say it has a lot more “spit and vinegar” than the mere 357 Magnum Cartridge. (Said tongue in cheek, of course.” But that’s as it should be, it’s a good deal larger than the 357 Case.
Place of origin United States
Designer Winchester Repeating Arms Company
Produced 1874 to 1937, now in production again.
Parent case .44-40 Winchester
Case type rimmed, bottlenecked
Bullet diameter .401 in (10.2 mm)
Neck diameter .416 in (10.6 mm)
Shoulder diameter .4543 in (11.54 mm)
Base diameter .465 in (11.8 mm)
Rim diameter .520 in (13.2 mm)
Rim thickness .058 in (1.5 mm)
Case length 1.30 in (33 mm)
Overall length 1.59 in (40 mm)
Bullet mass/type Velocity Energy
180 gr (12 g) SP 1,160 ft/s (350 m/s) 538 ft⋅lbf (729 J)
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