WILSON Rifle Max Case Length Gauge

WILSON Rifle Max Case Length Gauge


Rifle Max Case Length Gauge

SKU: RLWIL-Rifle Case Length Gauge Category: Tags: , , ,


L.E. Wilson has been making precision reloading tools for over 80 years. The Case Length Headspace Gage
allows reloaders to measure case length from the base of the cartridge
to the shoulder, as well as the maximum case length. This process shows
the reloader if ammunition is being produced within SAAMI specifications.

Technical Information

Material: Steel
Features: Precision Machining

  • This is a one-piece, non-adjustable cylinder-type gage for checking
    fired and resized cartridge cases for cone-to-head and overall length
  • Used to compare cartridges against the minimum SAAMI chamber dimensions
  • The item description will indicate if the headspace gage is Adjustable


  • Drop a fired case into the gage. Take a measurement on headspace.
    This can be done with either a depth micrometer or caliper (Depending on
    if the case is sitting high or low in the gage). If the case sticks
    out past maximum headspace the firearm probably has a larger than
    average chamber. The gage can still be used because it is being used to
    determine how much resizing is required.
  • Now once the initial measurement is taken, slowly dial in the full
    length sizer until there is a 0.001 to 0.002 drop in headspace. This
    will give the measurement to resize the case just below the chambers
    headspace in the firearm being reloaded for, giving a more accurate shot
    and saving brass by not causing it to be overworked.
  • Once the brass has been sized, set the brass in the gage and set the
    gage on a flat surface with the head side facing down. Now look across
    the top of the gage, this give the maximum and minimum for trim length.


Additional information

Weight N/A

17 Remington, 17 Remington Fireball, 218 Bee, 219 Donaldson, 219 Zipper, 204 Ruger, 22 Hornet, 22 Remington Jet, 22-250, 22 BR, 22 PPC, 220 Swift, 220 Wilson Arrow, 221 Remington Fireball, 222 Remington, 222 Remington Magnum, 223 Remington, 225 Winchester, 243 Winchester, 6mm-244 Remington, 6mm International, 6mm BR Long, 6mm PPC, 6mm Dasher, 6MM XC, 6X47, 6X47 Lapua, 25-20, 25-35, 250 Savage, 25-06, 256 Winchester Magnum, 257 Roberts, WSSM, 260 Remington, 6.5 Creedmoor, 6.5 Grendel, 6.5×47 Lapua, 6.5×55 Norma, 6.8 SPC, 270 Winchester, 270 WSM, 7mm TCU, 7mm IHMSA, 7mm BR, 7mm-08, 7X57 Mauser, 7mm WSM, 280 Remington, 6/6.5-284 Winchester, 7.62×39, 30-30, 300 Savage, 30/06, 30-40, 300 Ulrta Mag, 300 WSM, 300 RSAUM, 30BR, 300 AAC Blackout, 308 Winchester, 303 Savage, 303 British, 7.65 Belgian Mauser, 32-20, 32 Winchester Special, 8mm Mauser, 338 Lapua, 338 Federal, 348 Winchester, 357 Sig, 358 Winchester, 38-40, 35 Whelen, 35 Remington, 44-40, 50 BMG


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