Not if he had 1,000 rounds of ammo. That would be an entire CASE of ammo. Tijeras_Slim and I are discussing that now.
From the Colorado Springs Gazette - “A backpack worn by Murray held 1,000 rounds of ammunition for the rifle and two pistols he was carrying and several smoke grenades, police said”.
No shotgun mentioned until today.
Even a case of .223 isn’t light if you’re planning on moving quick.
The cops haven't been giving out info at all, until it appears they are certain. I think much of the "facts" such as rifle, helmet, body armor... are just rumor. It makes no sense that anyone would attempt to reload mags during such an assault, or carry such a qty of ammo during an assault.