.45-70 Specialty Ammo (#2991)

## About The Pull Request

Adds .45-70 Match ammunition to cargo, where it used to only be
available through R&D.

## Why It's Good For The Game

I love the Beacon but someone raised the very valid point that with
default ammunition it hits just barely harder than slugs out of a
shotgun. Giving it some options would allow it to fit its own spot on
the market and release more ammo from R&D hell.

## Changelog

:cl:
add: .45-70 Match ammunition added to cargo
/:cl:

code/modules/cargo/packs/ammo.dm

@@ -341,6 +341,12 @@
 	contains = list(/obj/item/ammo_box/a4570)
 	cost = 500
 
+/datum/supply_pack/ammo/a4570_box/match
+	name = ".45-70 Match Crate"
+	desc = "Contains a twelve-round box containing devastatingly powerful .45-70 caliber ammunition, that travels faster, pierces armour better, and ricochets off targets."
+	contains = list(/obj/item/ammo_box/a4570/match)
+	cost = 750
+
 /datum/supply_pack/ammo/ferropelletboxcrate
 	name = "Ferromagnetic Pellet Box Crate"
 	desc = "Contains a fifty-round ferromagnetic pellet ammo box for gauss guns such as the Claris."