Cold bore shift - help

[nomoa]

First, I'm new to bolt rifles. So please go easy on me.. and I appreciate anyone taking the time to share their knowledge.

I am trying to sight in a new rifle for a cold bore, as the immediate use is for hunting. Hopefully some long range in the future. (Bergara HMR Pro - 300 Win Mag/Nightforce NX8 4-32).

My question is to ensure a cold bore, has anyone used a hand-held blower like the wolfbox (picture below) to blow air through a rifle to cool it quickly? I assume this is fine for the metal, as they heat up quickly so they can probably cool quickly as well..?

I am limited to an outdoor public range with 15min on/off Shooting and a 1.5hr time slot.. So every cold shot is critical. Not to mention i may only get there one more time before the season begins.

 

[spife7980]

I use a fan to cool my barrel in the down time, it’s worth it. Use it.
To get to true cold bore takes time, period. But the fan can keep you away from scorching.

 

[db2000]

Also decide are you going to come bore a clean barrel or have 10 or so shots fired through it when you take it hunting. Once you decide on the specific load or factory ammo you’re going to use you just have to have a true cold bore shot. Unless you’re shooting shit at 500+ yards don’t overthink it. You probably have a decent sized area to hit.

 

[nomoa]

I was not planning on a completely clean barrel. I would call it the equivalent of pulling a dry bore snake through it after a few rounds. Will keep it consistent.

Thanks for the advice. Im currently getting a 1/2" group with a hornady round. I tried a few, remmington and Winchester gave me a 1.5" group

 

[Supersubes]

First, I'm new to bolt rifles. So please go easy on me.. and I appreciate anyone taking the time to share their knowledge.

I am trying to sight in a new rifle for a cold bore, as the immediate use is for hunting. Hopefully some long range in the future. (Bergara HMR Pro - 300 Win Mag/Nightforce NX8 4-32).

My question is to ensure a cold bore, has anyone used a hand-held blower like the wolfbox (picture below) to blow air through a rifle to cool it quickly? I assume this is fine for the metal, as they heat up quickly so they can probably cool quickly as well..?

I am limited to an outdoor public range with 15min on/off Shooting and a 1.5hr time slot.. So every cold shot is critical. Not to mention i may only get there one more time before the season begins.

Have you determined that you have a cold bore shift to begin with?

 

[Baron23]

Chamber Chiller

Chamber Chiller - the ultimate rifle barrel and chamber cooler. Designed to prolong barrel life and help maintain your rifles accuracy potential.

www.chamberchiller.com

Works good and doesn’t make that high keening sound like many others.