"This isn't really true though.

Here's the thing. The Geneva convention. The military is required to use full metal jacket ammunition, which when not properly placed doesn't do a whole lot of damage. Luckily civilians aren't limited to full metal jacket ammo.

The M855 military round has to penetrate I think 5 inches or so (in gel) to make a wound cavity, so that basically means you have to hit bones or vital organs for the round to really get in there and do some damage.

But, we can buy whatever bullets we want. You can set up 5.56 to do just about anything. If you want to fight unarmored targets you can get 36-40 grain super fast frangible or hollow point bullets that will all but explode the second they hit flesh. This is what a lot of your varmint / coyote hunters use. And I mean explode, look for videos of the .223 Barnes varmint grenade bullets.

Check this out for example:
http://www.ebaumsworld.com/video/watch/224049/

Not all 5.56 rounds can be grouped into the same category."

"Pfft, you people and your 308's 556's and 357's... I'll stick with my 303 British."

"I like the SMLE, but the .303 british is very hard to come by around here. I also rarely see.312 projectiles for reloading around here either.
So I would generally have to mail order any ammo or compopnents I would need.

Now, an SMLE re-barreled and chambered for . 308 or 7.62x39 might be kind nice to have."

"Ironically, I was just looking at that on Wolverine supplies webpage. I sorta want to get one."