Precision Reloading for Handguns — Smart Tips from the USAMU
SSG Greg Markowski of the USAMU at Camp Perry, Ohio.
Today is the final day of pistol competition for the National Matches at Camp Perry. Many of the best pistol shooters in the country will be on the firing line, including members of the U.S. Army Marksmanship Unit Service Pistol team. Today, July 18th, the handgun phase of the CMP National Matches concludes with the Oliver Hazard Perry Pop-Up Pistol Match, Military & Police Pistol Match, 1911 As-Issued Pistol Match, and Glock Match. After the last match, trophies and awards will be presented to the top shooters.
If you want to compete in top competitions like this, you’ll need good ammo. The following USAMU article provides rock-solid reloading advice, explaining how to load accurate, reliable handgun ammo.
Camp Perry NM pistol firing line from CMP Photo Archives.
The U.S. Army Marksmanship Unit (USAMU) fields pistol teams as well as rifle and shotgun competition squads. Consequently the USAMU’s Reloading Shop loads tens of thousands of pistol rounds every year. In this article, the USAMU’s handgun experts talk about reloading for handguns — with smart tips on how to achieve superior accuracy with 100% reliability. This article, which offers important insights on COAL, primers, crimps and more.
Precision Pistol Reloading — Recommended Methods
Optimize the Taper Crimp
One often-overlooked aspect of handloading highly-accurate pistol ammunition is the amount of crimp and its effect on accuracy. Different amounts of taper crimp are used with various handloads to obtain best accuracy. The amount is based on bullet weight, powder burn rate and charge, plus other factors. It is not unusual for our Shop to vary a load’s crimp in degrees of 0.001″ and re-test for finest accuracy.
Use Consistent Brass
Brass is also important to pistol accuracy. While accurate ammunition can be loaded using brass of mixed parentage, that is not conducive to finest results, particularly at 50 yards. It is important for the serious competitor/handloader to use brass of the same headstamp and ideally one lot number, to maximize uniformity. Given the volumes of ammunition consumed by active pistol competitors, using inexpensive, mixed surplus brass for practice, particularly at the “short line” (25 yards), is understandable. However, for the “long line” (50 yards), purchasing and segregating a lot of high-quality brass to be used strictly for slow-fire is a wise idea.
Importance of Uniform COAL
Uniformity of the Case Overall Length (COAL) as it comes from the factory is also important to achieving utmost accuracy. More uniform case lengths (best measured after sizing) contribute to greater consistency of crimp, neck tension, ignition/burn of powder charge, and so on. Cartridge case-length consistency varies from lot to lot, as well as by maker. Some manufacturers are more consistent in this dimension than others. [Editor’s note: It is easy to trim pistol brass to uniform length. Doing this will make your taper crimps much more consistent.]
Primers and Powders — Comparison Test for Accuracy
Pay attention to primer brands, powder types and charges. Evaluating accuracy with a Ransom or other machine rest at 50 yards can quickly reveal the effect of changes made to handload recipes.
Bullet Selection — FMJ vs. JHP
Bullets are another vital issue. First, there is the question of FMJ vs. JHP. A friend of this writer spent decades making and accuracy-testing rifle and pistol bullets during QC for a major bullet manufacturer. In his experience, making highly-accurate FMJ bullets is much more difficult than making highly-accurate JHPs, in large part due to the way the jackets are formed. Small die changes could affect accuracy of FMJ lots dramatically.
The CMP now allows “safe, jacketed ammunition” in Excellence-in-Competition (EIC) Service Pistol matches, although wadcutter ammunition is prohibited. Thus, the option to use very accurate JHP designs simplifies the life of CMP Service Pistol shooters in pursuit of the prestigious Distinguished Pistol Shot badge.
Hopefully, these tips will be helpful to any pistol shooters interested in accurate handloads, not just “Bullseye” shooters. Small tweaks to one’s normal routine can pay big dividends in improved accuracy and make practice and competition more rewarding.
Stay safe, and good shooting!
TOP IMAGE: SSG Greg Markowski, a shooter/instructor with the U.S. Army Marksmanship Unit and native of Poland, fires his pistol during the 2018 Civilian Marksmanship Program’s National Pistol Matches at Camp Perry, Ohio July 13, 2018. At that event, Markowski claimed the General Mellon Trophy, General Patton Trophy and the General Custer Trophy. U.S. Army photo by Maj. Michelle Lunato/released by Defense Visual Information Distribution Service.
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Tags: Bullseye, Crimp, Distinguished Pistol, Handloading, Pistol, Progressive Press, USAMU
What about inside chamfering?
Inside chamfering may be necessary if you plan to avoid the traditional “belling” of the case before bul;let insertion. My”match” 9mm loads are built on one brand and headstamp of case and are ALL taper-crimped. I actually found that he best die for that job is a “spare” FLS die, sans decapper, set so that the loaded round does not fully enter. Fiddly, but it works.
Most of my rifle brass for bottle-necked cases gets a light inside and outside chamfer. This process removes the “burr” left after case trimming. The inside one reduces the “shaving” of the bases of flat-based, jacketed bullets. The outside chamfet has no real function apart from clearing the aforementioned “deburring’. I am one of those folk who has taken to using the Lee “Factory Crimp” dies, gently, on bottle-necked cartridges.They certainly squeeze in the brass at th eend of the neck. Over-doing it will probably shorten the life of the cases, but “just enough” gives consistent ‘grip’ on the bullet, preventing “bullet float” in magazine-fed repeaters.
As usual, YMMV!