First off, I've been off of here for a while because some little oxygen theif wrote yet another virus that found my computer. I'm still not as often getting online because I have to use a library computer.
Okay, tell you what I do about this M1 vs BAR debate. I own a Garand and like it very well. My Granddaddy (Mom's daddy) carried and used both the M1 Garand and BAR in the Pacific in WW2. He told me when he got a chance to set the BAR down, he did and picked up an M1 Garand.
Now, M1/03/03A3 vs. K98k. I also own a K98k and can't tell much difference between 8x57JS and .30cal. M2 ball. So... I'm also reminded of a couple of shows about the 1st Special Forces (aka the Devil's Brigade) and 10th Mountain Division and one of those outfits trained with German weapons as well as US-issued. I recall where they told that they ran out of ammo during their advance, so they picked up German stuff and kept advancing.
The question of where are you gonna get ammo for a K98k? Think about it. If you must use the enemy's weapon, you probably have his ammo. If you must use the enemy's ammo, you most likely have his weapon too. Any time you kill or capture an enemy, you appropriate his stuff. Problem solved.