I never give my weapons to my companions because they always seem to degrade, I bought and anit-material rifle for 6000 caps, gave it to Boone, 30 minutes later, Boone switches back to his own rifle because it degraded down to 10%
Enemies keep hitting the gun with their attacks. It's the one, and only, way a weapon will loose CND in follower's hands. AMR, LMG, Minigun, Missile Launcher and Super Sledge are all weapons with large model sizes that are bullet magnets. Now give Boone a Marksman Carbine and 1000 rounds of surplus ammo and it'll hardly lose any CND.
Gotta slap this myth down every time it pops up. :brokencomputer: