Craig Boddington was the senior contributing editor of our modern gun and ammunition caliber dictionary. Craig was involved in the development and testing of many of these and writes from first hand experience. This dictionary was written exclusively for Wholesale Hunter with unique information found nowhere else.
GUN CALIBER DICTIONARY
Rifle
300 OSSM
The 300 ossm is a once wildcat, now commercially offered by olympic arms in an ar 15 type upper which fits an ar15 lower.
The 300 ossm is essentially a 25 wssm necked up to .308. — LG Outdoors