Boomstick's and shooty shooty bang bang's - The GUN Thread!

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Idiot here. Why is this rifle barrel so thick? This gun is 5x heavier than the bolt action and I want to know why. The bolt action seems to larger bullet size, so what gives? Can't imagine anyone running around the woods carrying this thing. It would almost certainly have to be resting on a table or a tripod or something. Gramps said he made it, so I'm guessing he bought a kit and assembled it? No idea what make or model the big rifle is. He also said that it takes unique ammunition that you can't buy off the shelf.

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Idiot here. Why is this rifle barrel so thick? This gun is 5x heavier than the bolt action and I want to know why. The bolt action seems to larger bullet size, so what gives?

Heavy barrels are more accurate because they resist warping better, soak up heat better, and the increased mass stabilizes recoil. This is even more true with older firearms because their metallurgy is inferior to modern ones.

Also yes, there is an entire category of specialized rifles where carry weight is not a factor at all, because they're made to be fired from bench rests purely as recreational/sport marksmanship. Bench rest rifles like that are *almost always* custom built by their shooters from pattern kits, and they often fire customized hand-loaded rounds as well.
 
do you remember what he told you it was?

He didn't say much about his guns at all. We tried fitting it in various cases but it didn't fit in any of them. He thinks he may have forgotten its case at the gun range. Measured it and found that it was 45 inches long and 11 inches wide, now just need to get a new case for it.
 
No idea what make or model the big rifle is. He also said that it takes unique ammunition that you can't buy off the shelf.

As Stephen said, it's a Winchester falling-block. Those were made in a huge variety of calibers, and on top of that the sheer strength of the single-shot falling block action makes it a very popular choice for experimentation with homemade "wildcat" rounds, especially when combined with a heavy barrel.

In other words, your grandfather could have simply meant it was in a caliber that isn't available as factory production anymore, or it he could have meant it was custom modified for a wildcat cartridge.
 
If you want further help figuring this out, measuring the bore diameter and if possible at least the approximate chamber length would be helpful.
 
Idiot here. Why is this rifle barrel so thick? This gun is 5x heavier than the bolt action and I want to know why. The bolt action seems to larger bullet size, so what gives? Can't imagine anyone running around the woods carrying this thing. It would almost certainly have to be resting on a table or a tripod or something. Gramps said he made it, so I'm guessing he bought a kit and assembled it? No idea what make or model the big rifle is. He also said that it takes unique ammunition that you can't buy off the shelf.

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5rXDsOf.jpg

That's a bull barrel.


A lot of people don't realize this, but firearm barrels are not flex-free. They have a lot of wobble when viewed in super-slow motion, some more than others.

If you've ever seen what an AK-47 being fired in slow motion looks like, then you know that they look wobbly like they're made of rubber:





At full speed, the wobble is basically imperceptible:



A thicker profile, heavier barrel helps defeat these unwanted harmonics and improve accuracy, at the cost of being substantially heavier.
 

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