I went thru Quantico in 1986. Model 13 with 3" barrel was the issue gun at the time. Policy was you were to carry the .38 158 grain SWCHP ammo in the gun (Winchester was issued to me), but could carry .357 ammo as your reload(s). I carried a personal M66 3" loaded with the 38's and had a Desantis 2x2x2 pouch filled with .357 rounds on my belt and Safariland speedloaders with .357s in the briefcase. Issue .357 ammo was Winchester 145 grain Silvertips.

Also, no airweight guns were authorized, steel framed J frames only. Colts were also banned, I believe Colts were verboten because there were no Colt qualified armorers left at the Gun Vault.