Some of you have asked about the numerous types of ammo available with SMA/RHS/ACE. I haven't taken the time as of yet to write this up, only because I haven't tested to see if any of this actually matters, however after some time in the virtual arsenal, there are some mild differences and effectiveness. See below: For the TL:DR Crowd, my choices are highlighted
Cartridge, Caliber 5.56 mm, Blank, M200 [Crimped tip with Violet lacquer seal]: 5.56×45mm training blank cartridge.
Should be pretty self explanatory. I don't know why this is included in RHS, but here we are
Cartridge, Caliber 5.56 mm, Ball, M855 [Green tip]: 5.56×45mm 62-grain FN SS109-equivalent ball cartridge with a steel penetrator tip over a lead core in a full copper jacket.
Used 1982 - Present. This round sucks because it maintains velocity after hitting soft targets, and pretty much sucks against modern ceramic armor so I skip it. Designed for 14.5" - 20" barrels
Cartridge, Caliber 5.56 mm, Ball, M855A1 Enhanced Performance Round [unpainted steel penetrator tip] (2010–Present): 62-grain bullet w/ a 19-grain steel penetrator tip over a copper alloy core in a partial copper jacket.
Lead Free Obama rounds. This round is the 'standard' when you pull a 5.56 SMA gun. This round also sucks against unarmored targets. It's okay against targets wearing armor. Designed for 14.5" - 20" barrels
Cartridge, Caliber 5.56 mm, Tracer, M856 [Orange tip]: 5.56×45mm 63.7-grain FN L110 tracer cartridge. Provides red visible light and lacks a steel penetrator.
Tracer 1982 - Present Designed for 14.5" - 20" barrels
Cartridge, Caliber 5.56 mm, Tracer, M856A1 [Red tip]: 5.56×45mm 56-grain Lead Free slug (LF) Tracer with similar ballistic performance to the M855A1 and improved trace to range consistency.
Lead Free Obama Tracer to match the M855A1 Designed for 14.5" - 20" barrels
Cartridge, Caliber 5.56 mm, Armor Piercing, M995 [Black tip]: 5.56×45mm 52-grain AP cartridge with a tungsten core.
Its Armor Piercing Designed for 14.5" - 20" barrels
Cartridge, Caliber 5.56 mm, Tracer, XM996 [Crimson tip]: So-called "Dim Tracer" with reduced effect primarily for use with night vision devices.
These are available in game as 'Tracer, IR'. It's a tracer you can only see with NODS Designed for 14.5" - 20" barrels
Cartridge, Caliber 5.56 mm, Special Ball, Long Range, Mk 262 Mod 0/1: 5.56×45mm 77-grain Open-Tipped Match/Hollow-Point Boat-Tail cartridge. Mod 0 features Sierra Matchking bullet, while Mod 1 features either Nosler or Sierra bullet.
Now we are getting somewhere. This round rocks in long and short barreled 5.56 guns. This is usually my go to Round. Designed for 18"-20" barrels, but the extra velocity and bullet weight make it perfect for up close in 10.5" guns. Okay against armor
Cartridge, Caliber 5.56 mm Ball, Enhanced 5.56 mm Carbine, MK318 MOD 0: 5.56×45mm 62-grain Open-Tipped Match Boat-Tail cartridge. Designated as Caliber 5.56 mm Ball, Carbine, Barrier. Also Called "SOST" and is available as an IR Tracer VERY NIIICE
This is my second choice. Barrier Blind round good for soft cover penetration. Good performance against armor and unarmored. designed for 10.5" - 14.5" guns
Cartridge, Caliber 7.62mm, NATO, Ball, M80 (United States): 147-grain (9.5 g) 7.62×51mm NATO ball cartridge.
Standard 7.62 NATO Ammo. Fairly good all around
Cartridge, Caliber 7.62mm, NATO, Ball, Enhanced Projectile Round, M80A1 (United States): 130-grain (8.4 g) M80 Lead Free (LF) 7.62×51mm NATO ball cartridge. 114.5-grain (7.4 g) of lead eliminated per M80A1 projectile.
Shitty Obama round, SMA standard
Cartridge, Caliber 7.62mm, NATO, Ball, Special, M118LR (United States): 175-grain (11.3 g) 7.62×51mm NATO Match-grade round specifically designed for long-range sniping. It uses a 175-grain (11.3 g) Sierra Match King Hollow Point Boat Tail bullet.
Great round. Heavy hitter, great for long range, gobs of power out of Short barreled guns too, at close engagement ranges
Cartridge, Caliber 7.62mm, NATO, Armor Piercing, M993 (United States): 126.6 grains (8.2 g) 7.62×51mm NATO armor-piercing round, black cartridge tip.
Cartridge, Caliber 7.62mm Special Ball, Long Range, MK 316 MOD 0 (United States): A 175-grain (11.3 g) round specifically designed for long-range sniping consisting of Sierra MatchKing Hollow Point Boat Tail projectiles, Federal Cartridge Company match cartridge cases and Gold Medal Match primers. The Propellant has been verified as IMR 4064 (per NSN 1305-01-567-6944 and Federal Cartridge Company Contract/Order Number N0016408DJN28 and has a charge weight per the specs of 41.745-grain (2.7 g)
Modern M118LR. Great all around choice
Cartridge, Caliber 7.62mm, NATO, Ball, Barrier, T762TNB1 MK319 MOD 0 (United States): 7.62×51mm NATO Enhance Behind barrier performance Enhance Function & casualty and muzzle flash requirements in short barrel carbines, 130 grains (8.4 g).
7.62mm Barrel Blind ammo, for soft cover penetration. Another good choice
Let me know if there are any questions