Case Measures

Rifle Headspace & Pistol Max Cartridge Gauges / Calipers & Micrometers

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Lyman Headspace Gauges INSTRUCTION_MANUAL Rifle Case Length Headspace Gauges

Protect yourself and your firearms

To achieve the highest degree of safety and accuracy, Lyman recommends that all bottleneck rifle cases be inspected after resizing to ensure that the proper headspace dimension is maintained. The best way to check this critical dimension is with a Lyman case length/headspace gauge. The reloader simply inserts the case into the gauge to insure that it does not exceed the maximum or fall below the minimum allowable headspace. In addition, the gauge will identify a case which exceeds the maximum allowable case length. Caution: Any case found with excessive headspace should be destroyed immediately.

Select Caliber:

Lyman Max Cartridge Gauges Pistol Maximum Cartridge Gauges

Ensure proper case dimensions for safety & reliability

Lyman maximum cartridge gauges check all critical dimensions of pistol ammunition to insure proper functioning. These precision made gauges allow the reloader to check the case length, diameter and overall cartridge length of pistol ammunition. This inspection is considered mandatory by top competitive shooters who demand 100% reliability for their competition ammo.

7832330 (9mm)
7832337 (.380 Auto)
7832332 (.40 S&W)
7832333 (10mm Auto)
7832336 (.44 Mag)
7832331 (.45 ACP)
25.95  23.36 ea. 9mm Luger

25.95  23.36 ea. .380 Auto

25.95  23.36 ea. .40 S&W

25.95  23.36 ea. 10mm

25.95  23.36 ea. .44 Mag

25.95  23.36 ea. .45 ACP
Lyman E-Zee Case Gauge II
7832215 (Rifle & Pistol)
7832217 (Pistol & Revolver)
7832225 (Modern Sporting Rifles)
7832227 (Cowboy Action)
E-Zee™ Case Gauge II

Sort cases quickly and easily

7832215 (Rifle & Pistol): This improved version measures the case length of over 70 popular rifle and pistol cases. Many new cartridges are included like the Winchester Short Mags, 204 Ruger, 500 S&W and others. Precisely made, this rugged metal gauge makes sorting cases quick, easy and accurate. Black.

7832217 (Pistol & Revolver): Lyman's popular E-Zee Case Gauge in a smaller, more convenient size yet covering most pistol and revolver cases. The precise metal "no-go" gauge makes judging case length fast, easy and accurate.

7832227 (Cowboy Action): Measures 11 of the
Most Popular Cowboy Action Case Lengths. Black.

31.50  28.35 ea. Rifle & Pistol

20.95  18.86 ea. Pistol & Revolver

20.95  18.86 ea. Modern Sporting Rifles

20.95  18.86 ea. Cowboy Action
Lyman Ammo Checkers Multiple Caliber Ammo Checkers

Lyman's new Ammo Checkers check the quality and consistency of both reloaded rounds and purchased ammo. A must for any auto shooter for easy and consistent feed. You can't afford misfeeds, so get the easiest "no-go" gauge available today!

These Ammo Checkers are gauges that allow a reloader to quickly confirm that their ammunition will fit in their chamber. Machined from solid blocks of 6061 T6 aircraft grade aluminum and cut with custom tooling to SAAMI minimum chamber dimensions. Ammo Checkers are available in three designs covering most common handgun and rifle calibers. One gauge will work with a variety of calibers. Just drop your loaded rounds in the ammo checker, and if the round fits into the gauge, it will fit in the gun's chamber. Each caliber is clearly engraved on the gauge. Bright orange anodizing makes them easy to find on your reloading bench.

Handgun Gauge:     380 Auto, 9mm Luger, 38 Super, 40 S&W, 45 ACP, 38/357, 44 Mag/Spl, 45 Colt

Small Rifle Gauge: 204 Ruger, 22 Hornet, 223 Rem, 22-250, 300 AAC Blackout, 7.62 x 39

Large Rifle Gauge: 243 Win, 270 Win, 30-30 Win, 308 Win, 30-06, 300 WSM

Select Gauge:

Lyman MSR Ammo Checker MSR Ammo Checker Block - NEW

Lyman MSR Ammo Checkers are machined from solid blocks of 6061 T6 aircraft grade aluminum and cut with custom tooling to minimum chamber dimensions. Their black anodized finish matches your favorite "black" rifle. Check the quality and consistency of both loaded rounds and purchased ammo. A must for any AR shooter. You can't afford mis-feeds, so get the easiest "Go" gauge available for modern sporting rifle calibers.

7833003 (MSR Gauge)

- Covers 223/5.56, 6.5 Grendel, 6.8 Rem. SPC, 7.62x39, 300AAC Blackout, 450 Bushmaster, 458 SOCOM and 50 Beowulf - CNC machined to minimum chamber specs - Confirm ammo will chamber smoothly

56.50  50.85 ea. MSR Gauge
Lyman Single Caliber Ammo Checkers Lyman Single Caliber Ammo Checkers Single Caliber Ammo Checkers

Lyman's multi-caliber Ammo Checkers have proven to be extremely popular with reloaders since their introduction last year. Ammo Checkers are gauges that verify the quality and consistency of both reloaded and factory ammo. They are machined from solid aluminum and cut with custom tooling to SAAMI minimum chamber tolerances. Just drop your cartridge into the gauge and if it fits, it will chamber in your gun.
This year, Lyman is expanding their line of Ammo Checkers into other calibers that are not included in the multi-caliber blocks. Each gauge is clearly marked for caliber and is an- odized in a bright orange color so that they will be easy to spot on your reloading bench.

Select Caliber:

Calipers & Micrometers

Lyman Stainless Steel Dial Caliper 7832212 7832212 Stainless Steel Dial Caliper

Accurate measurement at an affordable price

This precision tool will deliver unfailing .001" accuracy long after the best reloading dies have worn out. Comes with storage case.

52.50  47.25 ea. 
Lyman Electronic Stainless Steel Caliper 7832218 7832218 Electronic Stainless Steel Caliper

Stainless Steel Caliper with an easy to read digital display

Digital caliper features high tech stainless design with direct digital readout. Switch back and forth from inches to millimeters with the touch of a button. All new hold setting plus on/off switch. Accurate to .001"/0.1mm. Comes with handy storage case.

49.95  44.96 ea. 
Lyman Reloaders Micrometer 7832230 7832230 Reloaders 1" Micrometer

A precision micrometer at an affordable price

Traditional vernier micrometer offers precision at a very affordable price. Reads to .0001" on a Vernier scale. With spindle lock and friction thimble. Padded storage box included.

29.95  26.95 ea. 

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