Allan recommends that new .38 Special handloaders start with lead bullets (right) instead of light, jacketed bullets.

Through both a hobby and a profession, I've been graced with opportunities to look at cartridges from different perspectives. That has led to the concept of a Ballistician's Notebook, where these perspectives could be blended and preserved. I started my handloading career with the .38 Smith & Wesson Special, and I thought the cartridge would be a good place to start with a series sharing some of my more interesting findings and perspectives.

I won't rehash the cartridge's history other than to remind you that the .38 Spl. falls among a group of cartridges that started life loaded with blackpowder and successfully made the transition to smokeless propellants. As a result, the cartridge case is larger than needed for modern propellants. This can work against the incautious handloader.

Pressures & Case Capacity
The .38 Spl. has two pressure levels; one, at 17,000 psi, is for older firearms or those built on very light frames, and the other, 20,000 psi, is for modern firearms with the latest metallurgical enhancements. The upper level gets the designator .38 Spl. +P. For comparison, the maximum average pressure (MAP) for the .22 Long Rifle is 24,000 psi.

The relatively large case and the modest pressure limits have created an unusual situation: People suffering .38 Spl. problems from too little pressure are a significant percentage of those encountering problems. This is a cartridge whose lower charge limits must reflect a certain minimum pressure. Bullet type has an inordinate amount of influence. This is especially important with jacketed bullets that produce more friction in the bore than lead-alloy bullets. It doesn't take much powder to run light loads, and these small charges look lost in a .38 Spl. case. With so much case space, the powder charge has to maintain enough pressure to keep the bullet moving.

Handloads
Reloaders should use caution in loading the .38 Spl. to low recoil levels. Lubricated lead bullets have far less resistance in the bore than jacketed ones. I recommend that the novice .38 Spl. reloader always begin with lead projectiles of 145 grains and up. In recent Speer manuals, we did not show "start" loads for some jacketed bullets at standard . 38 Spl. pressures. Variations in critical chamber and barrel dimensions in some revolvers caused some velocities to fall to the point where lodging a bullet in the bore--a condition abbreviated BIB--was possible.

For revolvers, barrel/cylinder gap will always be a negative factor. The faster-burning propellants are preferred for loading light, jacketed bullets at less than maximum pressures. The bullet has a little more velocity by the time it crosses the gap, and any gas loss is somewhat mitigated. The industry guideline for the maximum gap in a revolver is 0.012 inch; I feel more comfortable with .38 Spl. revolvers that are 0.008 inch or less.

Cowboy action shooting revealed that in attempting to reduce recoil to negligible levels, some reloaders took the "light bullet/light charge" concept too far and got BIBs. It turned out the pressures were often in the range of 5,000 to 6,000 psi--simply not enough for modern propellants. When we developed loads for any revolver cartridge that could be used in cowboy competition, we did not let the start loads fall below 10,000 psi.