I'm not deliberately trying to be knobbish here, but is there potentially a problem with your employer's employer liability insurance (etc.) if something happens with one of your handloaded rounds?
Unless your boss is paying for the kit, you will be a very long time clawing back your money in reloading kit- the only place I make statistically significant savings is in my .44 loads (lightly loaded lead bullets), and shotgun slug (components bought in in bulk from Italy). .308 target ammo might now come in a fair amount cheaper than factory but again, I've bought components in mega bulk and some parts from the continent.
TBH it's probably quicker, cheaper and less hassle to ask your boss for larger batches of ammunition to be supplied (I would think he'd be agreeable to that as it's less time spent going back and forth to the gunshop and far less time you spend reloading "on the clock")- if necessary apply for an increase in your expanding ammunition allowance as well. Looking at Section 4.7 amd 13.30 of the guidance 500 rounds of expanding may not be an unreasonable allowance in your case.