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.
- This is for the bushing only, the comparator body and that are required for the set to work are sold separately
- All bushings are interchangeable with the Comparator
- Must be used with Calipers.
- 5 bushings
Body with 5 Bushing Set Item #HK66
5 Bushings Only Item #HK55
Lock-N-Load® Headspace BushingsF .188"Bushing blank with .188 diameter holeG .240"17 HornetA .330"17 Remington204 Ruger221 Remington Fireball222 Remington222 Remington Magnum223 Remington220 SwiftB .350"22 PPC22-250 Remington6mm PPC6mm Bench Rest Remington250-3000 Savage7mm Bench Rest Remington300 Blackout6.5 GrendelC .375"6mm Remington257 Roberts25-06 Remington270 Winchester7 X 57mm Mauser280 Remington30-30 Winchester30-06 Springfield300 H & H Magnum7.62 X 39 British6.5 X 55mm7mm Winchester Short Magnum30-40 Krag6.5 Creedmoor6.5mm X 47 LapuaD .400"223 Winchester Super Short Magnum243 Winchester243 Winchester Super Short Magnum260 Remington270 Winchester Short Magnum7mm-08 Remington300 Savage308 Winchester35 RemingtonE .420"6.5mm-284284 Winchester7mm Remington Magnum7mm Remington Ultra Magnum300 Winchester Short Magnum300 Weatherby Magnum325 Winchester Short Magnum338 Winchester Magnum350 Remington Magnum375 H & H Magnum264 Winchester Magnum7mm Remington Short Action Ultra Magnum7mm Shooting Times Westerner300 Remington Short Action Ultra Magnum300 Winchester Magnum300 Remington Ultra Magnum8mm Remington Magnum338 Remington Ultra Magnum35 Whelen