Modular Headspace Comparator – Kit

(3 customer reviews)


This kit comes complete with 4 inserts of your choice, one long body, one short body and the stand. Please make sure you select 4 headspace or bullet inserts. Save $55.00 compared to purchasing individually!
*** Solid Bullet Inserts are for bullets similar to Cutting Edge Solids Lathe turned copper bullets utilizing the pressure ring***
*** Straight Bullet Inserts are for individuals loading magazine length or using small bullets that o-give sits very close to the case mouth of the cartridge***
Body (Long)
Body (Short)
Insert 1
Insert 2
Insert 3
Insert 4


Modular Headspace Comparator Kit

The Modular Headspace Comparator Kit come with the following items

  • Short Comparator Body
  • Long Comparator Body
  • 4 Inserts of your  choice
  • Comparator Stand

Each headspace comparator and bullet insert is machined from 17-4 stainless steel.  This material will prevent the inserts from wearing out over time.   What makes these comparators better from competitors kits, is their ability to maintain consistency in your measurement of either headspace or seating depth.  The comparator bodies are machined to give the inserts a little bit of “play” to ensure everything settles in nice when measuring your ammunition.

Our bullet inserts are machined to the bore diameter of the caliber you are reloading for. For example if you choose a .243″ (6mm) caliber bullet insert your bullet insert will have a .237″ bore hole to match the lands of your barrel.  Each bullet insert has a 3° lead machined into the mouth of your bullet insert to match the o-give of commonly used bullets.


Please Use This Compatibility List To Determine Which Headspace Comparator Is Right For You. The Headspace Comparator Model Is Listed First, The Compatible Cartridge Is Listed After.

204 Ruger

  •  204 Ruger

223 Rem

  • 223 Remington and 5.56mm NATO

  • 222 Remington
  • Wildcat Cartridges necked down from the 223 Remington

22 Cal x 28°

  • 22-250 Remington

  • Wildcat Cartridges necked down from the 22-250 Remington

22 Cal x 30°

  •  22 Creedmoor
  • 224 Valkyrie
  • 22 ARC

22 Cal x 35°

  • 22 GT (6GT necked down to 22 caliber)

22 Cal x 40°

  • 22 Dasher (Non-Alpha Chamber)
  • 22 BRA
  • 22-250 Ackley Improved
  • 223 Ackley Improved

22 Alpha Dasher

  • .22 Cal Dasher with an Alpha Legacy Reamed Chamber

6mm x 20°

  • 243 Winchester

  • Wildcat Cartridges necked down from the 243 Winchester