Cold bore zero versus (very) Hot bore zero “test”

[nm.otter]

to extend barrel life they use a little battery powered air duster with a hose and a nozzle that fits in your chamber. They just run them when they check targets to cool everything down from the inside. I’m interested in that idea

Someone suggested these here last year so I bought one. After adding a brass hose barb and a bit of tubing, it gets the job done.

 

[journeyman713]

 

[Hurley88]

I dont think anyone is going to debate shooting a lot with a piping hot barrel is going to result in less barrel life than slow firing and never letting a barrel get hot as has been historically advised for hunting rifles.

True 30 shot strings would result in more mirage than i'd want to deal with before getting to 30 with a suppressed hunting weight rifle/can.

Oh yeah. Cardboard was used.

 

[Hurley88]

Sorry guys I’ll not detail the thread further. I had three of those barrels so they got picked for most of my testing. Didn’t really have a purpose for the third so it just got put in the rotation to test for barrel life. If she goes up into 2000-2500, it’ll impact my shooting for sure. But we’ll see.