INSTRUCTIONS Straight & Curved O.A.L.
The initial distance a bullet travels is critical to an accurate handload. Any loss of alignment, as the bullet travels from the cartridge case to the rifling, will affect accuracy. Minimal changes in clearance (free-travel), between the bullet and the rifling will often yield substantial improvements in accuracy. The O.A.L. Gauge is an easy-to-use precision tool. It allows the user to (1) determine maximum overall cartridge length (O.A.L.
with the lands. The most preferred method is to use the bullet adjustment rod in one hand and a wooden dowel inserted through the muzzle in the other hand, “sandwiching” the bullet.This allows a positive feel as the bullet contacts and releases from the rifling. Remember to use the same pressure or “tapping technique” on the bullet adjustment rod each time you use the tool. Keep in mind that you can “drive” the bullet into the lands as much as .025" by using excessive pressure or a “heavy-handed” approach.
loads. There are no short cuts in this area. However, once the optimum freetravel is determined with one brand of bullets, this same freetravel dimension will most often be preferred with other bullet brands or weights. Remember, if other bullet models or weights are chosen, they will have differently shaped ogives, which will require that you repeat the O.A.L. Gauge process with the new bullet.
SENDING BRASS FOR FACTORY MODIFICATION Your brass cases can be sent to the factory for modification. This includes all sizes of centerfire style cases, from 17 caliber to 50 caliber BMG, including WILDCATS and IMPROVED brass (Caseheads smaller than the 223 REM family will require a “Hornet Adaptor” which allows you to attach these small cases to the O.A.L. Gauge). We prefer that you send brass that has been fired (fireformed) in the gun that you want the brass to fit.
Modified Cases Available 17 REM 17 HORNET 218 BEE 221 REM 222 REM 223 REM 222 REM MAG 22-250 REM 220 SWIFT 6MM BR REM 243 WIN 6MM REM 250 SAV 257 ROB 25-06 REM 6.5 GRENDEL 6.5 CREEDMOOR 260 REM 264 WIN MAG 6.8 REM SPC 270 WIN 7MM BR REM 7MM-08 REM 7X57 MAUSER 284 WIN 280 REM 7MM REM MAG 30-30 WIN 30 TC 308 WIN 30-40 KRAG 308 MARLIN EXP 30-06 SPRG 300 RCM 300 WIN MAG 300 WBY MAG 7.62X39 303 BRIT 32 WIN SPL 8X57 MAUSER 8MM REM MAG 338 MARLIN EXP 338 RCM 338 WIN MAG 340 WBY MAG 35 REM 35 WHELEN 350 REM MAG 9.
