RCBS Ammomaster Chronograph

by
posted on December 2, 2010
201012292727-xw7361tar-9097_f.jpg

Few items can be as important to shooters, hunters and handloaders as a chronograph. Yet it seems that a minority of those enthusiasts have one. Consider this: Without knowing a load’s velocity from a given firearm, you cannot accurately determine trajectory, drift, energy, and ultimately, downrange performance.

If there has been a limitation on individuals owning a chronograph it has been price. The new AmmoMaster from RCBS is an affordable, effective option for those who want to know what their firearm/ammunition combination is really doing.

The $155 AmmoMaster is self-contained, meaning that all of its components, from screens and cords to diffusers and accompanying support arms, are held within the unit’s hollow cavity. The display/keypad unit detaches for use. This, coupled with the unit’s dimensions 25 3/4 by 15 5⁄8 inches—and its 4-pound, 2-ounce weight, makes for convenient transport.

Setup of the AmmoMaster is quick and easy. With the body affixed to a standard camera tripod, the two screens are placed in the corresponding slots in the body. Next, the four diffuser supports are connected—one to each side—to the screens, then, following the numerical patterns on the diffuser sections, the two diffusers are assembled and connected atop the supports. The display is then detached and the two 20-foot-long-cord ends from the screens are inserted into the corresponding slots—start and stop—in the display/keypad, and a single 9-volt battery is connected on the backside of the keypad unit.

The AmmoMaster requires a minimum distance of 10 feet from the muzzle for most firearms; however, magnum chamberings and larger calibers might require even greater distances. Although the unit has an 86-sq.-in. shooting area, the ideal projectile path is 4 inches above the bottom of the screens’ profile. As such, the shooter must be cognizant of the projectile’s path in relation to the line of sight when using an optic—typically 1.5 inches—or certain iron sight configurations, such as those found on AR-15s. When using a shotgun, one must take into account the pattern spread. In fact, RCBS recommends removing the side supports and diffusers when using a shotgun for this very reason. Fortunately, the company sells replacement parts. For use indoors, incandescent lighting is required.

The unit can measure velocities in feet/second (50 fps to 7,000 fps) and meters/second, and the user can add—via shooting—or delete data from current and past strings through the “Edit String” function. All memory can be removed if so desired. The AmmoMaster has a 100-shot memory, consisting of 10 strings of 10 shots each. Although velocity is displayed after each shot, at any time a string’s specifications can be viewed through the “Stats” feature. In this mode the shooter can scroll through high, low and average velocities, as well as extreme spread and standard deviation. By selecting “Enter/New String,” the shooter can begin a new string without deleting the previous string’s data.

Because of the varied outside venues American Rifleman staff uses to test products for these pages, an RCBS AmmoMaster sent for evaluation has proven itself indispensable. For months now the unit has performed without issue, and its small, easily transported size has endeared it to the editors.

Contact: RCBS; (800) 533-5000; www.rcbs.com.

Latest

Mossberg International Silver Reserve Eventide Turkey camouflage over-under shotgun 28 gauge right-side view on white background
Mossberg International Silver Reserve Eventide Turkey camouflage over-under shotgun 28 gauge right-side view on white background

Gun Of The Week: Mossberg Int’l. Silver Reserve Eventide Turkey

Join American Rifleman staff on the range this week with the Mossberg Silver Reserve Eventide Turkey, a camo-clad, 28-ga. shotgun designed for the field.

The Armed Citizen® June 21, 2024

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Review: Century Arms Canik TTI Combat

Developed in collaboration with firearm trainer Taran Butler, the Canik TTI Combat handgun from Century Arms is packed with performance features.

HiViz Shooting Systems Introduces Sight Installation Program

Sight upgrades can be one of the easiest and most important upgrades to any handgun. However, not everyone has access to, or the ability to be, their own gunsmith. That’s why HiViz created this basic sight installation program.

I Have This Old Gun: Gallager Carbine

The Gallager carbine is one of the American Civil War's lesser-known cavalry arms, but it still used a unique design that allowed it to adapt to the metallic cartridge era that followed.

New For 2024: Heritage Mfg. Roscoe Revolver

Inspired by the classic snub-nose revolvers of yesteryear, the new Heritage Mfg. Roscoe is the company's first centerfire revolver.

Interests



Get the best of American Rifleman delivered to your inbox.