shot conformation

[cdherman]

Perhaps I am a weirdo. I purchased one of the little red barrel coolers and don't fire the next shot until the chamber is 85* or cooler. I discovered early mornings I fire a shot and check the camber temperature and it is little more than ambient. Warm mornings like yesterday the temperature started at 67* and went up to 73*. I fired fifteen shots in a primer test. The test took over an hour and a half.

The barrel is a carbon fiber. I don't know if that makes a difference or not.

If anyone is interested in the results, I will post them.

For me the problem is that most of my hunting will occur under 40, perhaps 45 F. I tend to polish loads in Sept to Oct, then shoot a five shot string over 5 hours in Nov. I shot every hour or so, while working on some other project too. I only WISH I could follow my own advice and shoot once shot daily for 10 days.......

As for carbon fiber, I am confused at times. They say its conductivity for heat is better than steel. But how is that measured? Does the weight of the metal contribute, and since CF is so much lighter, it conducts heater better per unit weight? If that's the case (and I fear it is) the light carbon fiber outer jacket of CF barrel is actually conducting slower than a heavier steel barrel would. Perhaps per unit weight faster, but in the end slower. I would caution rapid shooting with a CF barrel......

Also, the specific heat (amount of heat) CF can absorb is less than steel, so even with superior heat conduction, it might still lag behind a big ole' heavy bull barrel that has lots of mass to absorb that heat.

 

[Mike Matteson]

Have you timed the minutes it takes to cool the barrel down?

Not long with a CO2 set up for cooling barrels.

 

[sendero72]

Two minutes in the summertime with the cold bar mops.

 

[RichCoyle]

Have you timed the minutes it takes to cool the barrel down?

I will try to get some numbers this Saturday, if the Lord wills.

 

[Mike Matteson]

To me cold bore shot are the most important shot. You need to know how it does You also need to know how the round does in the whatever weather you are in.
I don't think that the animal is going to wait around for you to warn up your rifle and ammo. So the first shot out of your rifle is going to be a cold bore shot and that has to count. I clean my rifle before going hunting. I will send a shot to foul the barrel. That it. If I have to travel a long ways. I'll reconfirm it zero in may camp sight if it's not right next to where I am going to hunt. I generally take very care with that rifle. I don't generally have a back up rifle with me.
Cold bore is what counts. If the rifle won't place that bullet on the money, it's no good for me.

 

[Eric H]

I will try to get some numbers this Saturday, if the Lord wills.

I'm sure you'll do well.