Also check out this funny coffee table book
GatFacts? The Book!: A satire of Firearms Myths https://www.amazon.com/dp/1511483717/ref=cm_sw_r_awd_z7nZvbJA4XBN9
That your home can be searched at any time if you own a suppressor.
Movies where snipers just put their cross hairs dead on a far away target without first making adjustment.
"Suitcase" sniper rifles where the scope is magically centered even after previously being disassembled.
That a...
The hotter it is, the greater the wear.
Water jackets greatly preserve barrel life.
Also he polymer barre jacket(can't remember the name, but they make a jacket for the mosin) also pulls heat away and reduces speed of erosion
For rifle, I always prefer the smallest and lightest capable of your standard rate of fire. Most mini cans sound the same to my ear as larger cans like the specwar.