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8.5 years, two differant outfits, had the greatest time doing armored work, just didn't pay enough.
Wells Fargo Armored, not connected with Wells Fargo Security or the bank, issued Taurus or Smith 38 4 inch. Mine was a Model 64, and at that time at that office, they were take home guns, no real storage space. Issue ammo was 158 grain LRN, but I brought in my own speedloaders in my bag with 110 grain Hydra Shoks. Near the end of my time, I brought my auto in the bag with full rig, as did my partner with his 1911A1. We'd leave the terminal, and the wheelguns would go in the bag, and the autos would go on. Also was driving a 1964 International Armored truck, this in 1989.
BTW, I won an IDPA style match with that Smith 64.
Armored Transport/AT Systems. I was the company Rangemaster and armorer. We still had some Smith Model 10s around, one with a factory jeweled trigger and hammer. We ended up turning in all the older wheelguns for new Smith 686 4 inchers.
BUT, you could carry any sidearm you wanted, as long as it was 9mm or 38 Special or bigger up to a 45 ACP. I used a Witness 40SW, as a matter of fact, turned out to be the very first Witness 40 ever imported to the US. Also, the company GAVE you a few hundred rounds of free ammo every year, in whatever single caliber you asked for.
And the poster about the days of "extra" firepower, absolutely spot on. During season, we used to put temporary racks in the truck in the drivers area, and throw up personally owned Ars, AKs, Mini14s, etc., as a visual deterrent. It worked. I had one guy show up to work one day with two Glocks,. one each side in thigh rigs, a Smith revolver in a shoulder holster, EAA Witness 40 IWB same side, and under the other shoulder was a slung AKM semi auto clone with 75 round drum and 37mm flare launcher. I alos know he carried a 38 derringer in his back pocket, ask me about the time he shot himself in the rump with it...but that's a different story.
I did make him store most of the hardware in the vault that day.
There IS one occaision a revolver is better for an armored truck, and that's shooting through the gunport - that first shot recoil will catch your front sight or slide during recoil at the top of the gunport, and you are very likely to have a jam. Sometimes I would have a revolver in the truck with me for just that idea, plus a snub concealed on me, as taking messengers hostage was an idea that was catching on.
I also LOVED the concept of the Bushmaster bullpup, with that high sight rail and short length could be great to use in a truck, with optics that could actually be used out the window above the gunport. Never got to try is, but I did try the Mini-14 through the gunport - that was interesting...