.32 S&W Long N.P. Load Data & Reloading Guide

Also known as: .32 Smith & Wesson Long, .32 S&W Long, .32 Long

About .32 S&W Long N.P.

The .32 S&W Long N.P., also known as the .32 Colt New Police, was introduced in the late 19th century. Developed as an evolution of the .32 Smith & Wesson, it was initially designed for law enforcement use and later gained popularity among civilians. The N.P. designation stands for New Police, which was Colt's attempt to improve upon the original design by slightly altering the bullet shape to a flat-nosed, wadcutter style for better stopping power.

Technical characteristics of the .32 S&W Long N.P. include a rimmed, straight-walled case with an overall length of approximately 0.920 inches. It typically operates at a maximum pressure of around 15,000 psi. The cartridge is known for its mild recoil and ease of shooting, contributing to its enduring presence in target shooting and personal defense roles. Bullet diameters generally measure around .312 inches, and typical factory loads offer bullet weights ranging from 90 to 100 grains.

In terms of ballistic performance, the .32 S&W Long N.P. achieves muzzle velocities in the range of 700 to 800 feet per second, depending on bullet weight and powder load. While it does not offer the stopping power of larger calibers, it is effective for close-range self-defense and small game hunting. Its accuracy and low recoil make it suitable for competitive shooting, particularly in historically-themed matches or with older firearms.

For reloaders, the .32 S&W Long N.P. presents several advantages. It is a forgiving cartridge to load, with a wide range of suitable powders and bullets available on the market. Its low operating pressure allows for extensive case life, making it economically viable for those looking to customize their own loads. Reloading the .32 S&W Long N.P. also provides the opportunity to experiment with bullet types and charges, tailoring ammunition specifically for target shooting or enhancing performance for personal preferences.

Technical Drawing

.32 S&W Long N.P. cartridge dimensions, C.I.P.L3 = 23.37 mm, L6 = 32.51 mmL3 = 23.37 mmL6 = 32.51 mm

Based on C.I.P., the max. allowed case length is 0.920 in / 23.37 mm, the max. cartridge length is 1.280 in / 32.51 mm, and the max. allowed pressure is 14,504 PSI / 1,000 bar.

Technical Specifications

Maximum Pressure:14504 PSI / 1000 bar
Case Volume:14.8 Grains of Water
Primer Size:Small Pistol (SP)
Safety Standard:C.I.P. (Datasheet)
Bore Area:47.91 mm²
Barrel Diameter:0.312" / 7.9 mm
L3:0.920" / 23.37 mm
L6:1.280" / 32.51 mm

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Standard Load Data — .32 S&W Long N.P.

Select your desired cartridge and bullet weight below to access the corresponding load table. From there, you can choose any listed load recipe and transfer it directly into the ballistics calculator for further refinement, optimization, and precision tuning.

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71 gr
78 gr
83 gr
85 gr
86 gr
90 gr
98 gr
100 gr
113 gr
115 gr

Frequently Asked Questions

The maximum pressure for .32 S&W Long N.P. is 14,504 psi | 1,000 bar.

.32 S&W Long N.P. typically uses a Small Pistol (SP) primer.

The case capacity of .32 S&W Long N.P. is approximately 14.8 grains of water (H₂O).