Preferably with out looking it up. What is meant when I say that is an "Over Bore" and what factors contribute to that condition.......?
Pop-Quiz Question, as it relates to firearms, What is Overbore...?
Preferably with out looking it up. What is meant when I say that is an "Over Bore" and what factors contribute to that condition.......?
It refers to loading a shell with more powder than is needed to try and get more velocity
I Wonder Who was the first person to look at a cow and say, "I think I'll squeeze these dangly things here, and drink what ever comes out?"
I don't have a clear definition.....and I didn't look that up.Originally Posted by Sourdough
Your very close, your not wrong, but there is more to it than that.
Un-related question (Bonus question). What is a quarter Bore.......?
A person who still has a chance of becoming interesting unlike the Over Bore who'll bore anyone to death?
A person who still has a chance of becoming interesting unlike the Over Bore who'll bore anyone to death?
Good thing you got legs........
If I remember right it's also not being able to releas all the pressure or something to that effect but I'm not 100 percent sure if that's right. So I didn't add that to my original answer
I Wonder Who was the first person to look at a cow and say, "I think I'll squeeze these dangly things here, and drink what ever comes out?"
It is having more powder in the load than can be burned in the barrel before the bullet exits the muzzle.
The case of the 7.62 Russian being shot in a carbine is classic. The load is normal for the rifle but "overbore" for the carbine, creating a massive fireball, muzzle flash and loud report due to the powder burning outside the confides of the barrel. Same for the 5.56 out of the M4 instead of the longer M16 barrel the cartridge was designed for.
The trick is to choose the appropriate powder and just enough of if to completely burn in the specific barrel, giving one top velocity.
almost all our modern rifles are "overbore" with our preference for 20"-24" barrels. Most specs rate velocity and gague performance in a 26" barrel.
This is why you lose velocity when you cut barrel length and finally reach the point where a 16" .300 mag gives less power than a 24" 30-30.
Inversley underbore is a condition such as using a 30" barrel on a .22lr. That cartridge develops all the available power in the first 13" of barrel and everything else is friction slowing the bullet before it leaves the barrel.
Now you are thoroughly bored to the point of being overbored.
Last edited by kyratshooter; 08-02-2010 at 05:07 PM.
If you didn't bring jerky what did I just eat?
kyratshooter, I would say you hit all of the points, well done.
That's must be why I can't get a short barrel version for my 7 mag.
It was explained to me that Mag loads use a slow burning powder to push the bullet to max speeds, so a shorter barrel would cut down on that velocity.
That sound about right?
Geezer Squad....Charter Member #1
Evoking the 50 year old rule...
First 50 years...worried about the small stuff...second 50 years....Not so much
Member Wahoo Killer knives club....#27
I'm not overbored but you just tied a knot in my brain.
Show OffI knew what it was but couldnt explain it like you did Thanks
I Wonder Who was the first person to look at a cow and say, "I think I'll squeeze these dangly things here, and drink what ever comes out?"
Comes from 30 years of school teaching. Ask me what time it is and I'll give you the history of the watch and how to make three different versions. My daughter used to claim I was going to make her brain pop!Show Off
Yes H63, if you cut a 7mag down to 18" you might as well be shooting a 7x57, a 7-30 or .284. And either one would last longer. Rifles that are designed overbore, or any magnum for that matter, tend to have short barrel life.
If you didn't bring jerky what did I just eat?
That happens a lot when New York folk try to communicate with us backward KY hill folk.I'm not overbored but you just tied a knot in my brain.
If you didn't bring jerky what did I just eat?
Well now I know who to PM when I need an answer
I Wonder Who was the first person to look at a cow and say, "I think I'll squeeze these dangly things here, and drink what ever comes out?"
We are so backward, that we seem forward only to ourselves.
Poking fun at New Yorkers has been a big part of my humor life for the past several years. My wife's family was from Binghamton, NY. Half of them moved to KY for jobs. The other half scattered from NY to AZ.
My SIL had been here 25 years and was always talking about "In NY we had better this, that or the other". I think I was the first person that had ever looked at her and said; "Why arn't you still there?"
Her husband, from Connecticut, immidiately replied "Taxes, taxes and stupid gun laws!"
My wife had spent her early years in Texas, her teen years in NY and her adult life in KY. I always told her she was the only woman I ever met that could shoot a long rifle like a KY pioneer, cooked like a Texan and talked like a yankee.
You folks arn't all bad, I have proof. The best wife I ever married was from NY.
If you didn't bring jerky what did I just eat?
Then there's hope for the rest of us, KRS.
I am a transplant though so the roots don't run deep enough to take anything New York related too personally.
So.....what was the purpose of the pop quiz?
Tracks Across the High Plains...Death on the Bombay Line...A Touch of Death and Mayhem...Dead Rock...The Griswald Mine Boys...All On Amazon Books.
Posting Permissions
Reply With Quote
Bookmarks