Hornady Lock-N-Load HEADSPACE Comparator Kit



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Hornady Lock-N-Load HEADSPACE Comparator Kit

Lock-N-Load Headspace Comparator

The Lock-N-Load Headspace Comparator extends brass life, improves accuracy, and enhances safety. The gauge measures variations in brass before and after firing or re-sizing. It allows for headspace comparison between fire-formed brass and re-sized brass.

The five bushings that come with the Lock-N-Load Headspace Comparator provide the ability to check most bottleneck cases, from .17 Rem through belted magnums. Ackley Improved chambers use the same bushing size as the parent case. See chart provided or consult product instructions for cartridge/bushing size details.

Body with 5 Bushing Set Item #HK66

5 Bushings Only Item #HK55

 Determining the proper bushing diameter: If you add the neck diameter and the shoulder diameter and divide that number by two, use the bushing closest to that number.


F .188″ #F188
Bushing blank with .188 diameter hole
G .240″ #G240
17 Hornet
A .330″ #A330
17 Remington
204 Ruger
221 Remington Fireball
222 Remington
222 Remington Magnum
223 Remington
220 Swift
B .350″ #B350
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
C .375″ #C375
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
D .400″ #D400
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
E .420″ #E420
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


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