Modular Headspace Comparator – Headspace Comparator Insert

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Description

Headspace Inserts for your Modular Headspace Comparator

***Requires Modular Headspace Comparator Body***

The Modular Headspace Body must be purchased separately and can be found at the Modular Headspace Comparator Body page.

New Modular Design for the most accurate cartridge headspace and bullet measurements available!

Newly designed Modular Headspace Comparator (MHC) is an updated version of our highly successful dedicated Headspace Comparator that we previously made out of 6061 aluminum.  We improved on its design allowing the new MHC to be used with cartridges up to 338 Lapua Magnum and more.

 Each bullet and headspace insert is precision machined out of 17-4 Stainless Steel for increased durability and corrosion resistance.

Modular Headspace Comparators will ship with your headspace comparator insert of choice by selecting the correct insert from the drop down menu.

Simply put, these are the highest quality headspace and bullet measuring tools available.

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 Model

  •  223 Remington and 5.56mm NATO

  •  Wildcat Cartridges necked down from the 223 Remington.

22 Cal x 40°

  • 223 Ackley Improved

  • 22-250 Ackley Improved22

22-250 Remington (22 Cal x 28°)

  • 22-250 Remington

6mm x 20°

  • 243 Winchester

  • Wildcat Cartridges necked down from the 243 Winchester

6mm x 30°

  • 6mm Creedmoor

  • 6XC

  • 6×47 Lapua

  • 6BR

  • 6BRX

  • 6mm Super LR

6mm x 35°

  • 6GT

  • 6mmx284 Win

6mm x 40° .275” Neck, .060” Neck Shoulder Radius

  • 6mm Dasher

  • 6BRA (6mm BR Ackley Improved)

  • 243 Ackley Improved

  • Any 6mm Cartridge with 40° Shoulder and a neck smaller than .275”

6mm x 40° 273” Neck, .060” Neck Shoulder Radius

  • 6mm Dasher

  • 6BRA (6mm BR Ackley Improved)

  • 243 Ackley Improved

  • Any 6mm Cartridge with 40° Shoulder and a neck smaller than .273”

Alpha 6mm Dasher

  • Alpha 6mm Dasher, .2755” Neck, .075” Neck/Shoulder Radius

25 Cal x 30°

  • 25 Creedmoor, 25 x 47 Lapua

  • 25 PRC, 25 SAUM

  • 25 SST

6.5mm x 20°

  • 260 Remington

  • 243 Winchester

6.5mm x 30°

  • 6.5 Creedmoor

  • 6.5 PRC

  • 6.5 SAUM

  • 6.5×47 Lapua

6.5mm x 35°

  • 6.5 WSM

  • 6.5 x 284 Win

6.5mm x 40°

  • 260 Ackley Improved

  • 6.5mm Wildcat cartridges with a 40 degree shoulder

6.5mm x 55mm Swedish

  • 6.5mm x 55mm Swedish

270 Winchester

  • 270 Winchester

7mm x 20°

  • 7mm-08

7mm x 25°

  • 7mm Rem Mag
  • 7mm STW

7mm x 30°

  • 7mm SAUM

  • 7mm Creedmoor

  • 7mm LRM

7mm x 35°

  • 284 Winchester

  • 7mm WSM

  • 7mm/300 WSM

7mm x 40°

  • 7mm-08 Ackley Improved

  • 280 Ackley Improved

7mm Sherman Short

  • 7mm Sherman Short, 40° Shoulder, .125” Neck/Shoulder Radius

30 Cal x 20°

  • 308 Winchester

  • Wildcat Cartridges necked down from the 308 Winchester

30 Cal x 30°

  • 300 SAUM

  • 300 PRC

  • 300 RUM

30 Cal x 35°

  • 300 WSM

30 Cal x 40°

  • 300 Norma Mag Ackley Improved

300 Blackout

  • 300 Blackout

30-06 Springfield

  • 30-06 Springfield

300 Winchester Magnum

  • 300 Winchester Magnum

300 Norma Mag x 20.5°

  • 300 Norma Mag

338 Cal x 20°

  • 338 Federal

338 Cal x 35°

  • 33 Nosler

338 Cal x 40°

  • 338 Lapua Magnum Ackley Improved

  • 338 Norma Ackley Improved

  • 300 Norma Ackley Improved

338 Lapua 20° 

  • 338 Lapua Magnum

  • Wildcat Cartridges necked down from the 338 Lapua Magnum

338 Norma Mag

  • 338 Norma Magnum

  • Wildcat Cartridges necked down from the 338 Norma Magnum

33XC

  • 33XC

37XC

  • 37XC

375 Cheytac

  • 375 Cheytac

  • Datum A .330″
    17 Remington
    204 Ruger
    221 Remington Fireball
    222 Remington
    222 Remington Magnum
    223 Remington
    220 Swift
  • Datum B .350″
    22 PPC
    22-250 Remington
    6mm PPC
    6mm Bench Rest Remington
    250-3000 Savage
    7mm Bench Rest Remington
    300 Blackout
    6.5 Grendel
    6mm ARC
  • Datum C .375″
    6mm Remington
    257 Roberts
    25-06 Remington
    270 Winchester
    7 X 57mm Mauser
    280 Remington
    30-30 Winchester
    30-06 Springfield
    300 H & H Magnum
    7.62 X 39mm, M43
    6.5 X 55mm Swedish
    7mm Winchester Short Magnum
    30-40 Krag
    6.5 Creedmoor
    6.5mm X 47 Lapua
  • Datum D .400″
    223 Winchester Super Short Magnum
    243 Winchester
    243 Winchester Super Short Magnum
    260 Remington
    270 Winchester Short Magnum
    7mm-08 Remington
    300 Savage
    308 Winchester
    35 Remington
  • Datum E .420″
    6.5mm-284
    284 Winchester
    7mm Remington Magnum
    7mm Remington Ultra Magnum
    300 Winchester Short Magnum
    300 Weatherby Magnum
    325 Winchester Short Magnum
    338 Winchester Magnum
    350 Remington Magnum
    375 H & H Magnum
    264 Winchester Magnum
    7mm Remington Short Action Ultra Magnum
    7mm Shooting Times Westerner
    300 Remington Short Action Ultra Magnum
    300 Winchester Magnum
    300 Remington Ultra Magnum
    8mm Remington Magnum
    338 Remington Ultra Magnum
    35 Whelen

Additional information

Weight 2 oz
Dimensions 4 × 3 × 1 in

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