JMJ2
Regular Member
imported post
Is 40 Cal considered a big bore caliber ?
Is 40 Cal considered a big bore caliber ?
Is 40 Cal considered a big bore caliber ?
It's more complicated than that. Based on bits and pieces I've learned over the years from articles about firearm recoil and on my understanding of classical mechanics, here's my understanding of how recoil works. This is the first time I've ever tried to write it down and I thought it might be interesting to try, so here goes:Recoil depends on two factors: power of the round and weight of the gun
Well, AFAIK, "big bore" moreso relates to big-game rifle cartridges.I consider any caliber that starts with a 4 to be "big bore"
this got a big debate on another gun forum...lots of people didn't consider the .357mag "big bore" either. I don't, but I do recognize it as a powerful beastnova wrote:Well, AFAIK, "big bore" moreso relates to big-game rifle cartridges.I consider any caliber that starts with a 4 to be "big bore"
And, the "4" rule excludes .357 magnum...
Then again, I guess that "big bore" technically would refer to the size of the round, not the power. A .223 is powerful, but certainly isn't "big" bore.imperialism2024 wrote:this got a big debate on another gun forum...lots of people didn't consider the .357mag "big bore" either. I don't, but I do recognize it as a powerful beastnova wrote:Well, AFAIK, "big bore" moreso relates to big-game rifle cartridges.I consider any caliber that starts with a 4 to be "big bore"
And, the "4" rule excludes .357 magnum...
One man's squirt gun is another man'sCannon and vice versa.[font="Verdana, Arial, Helvetica, sans-serif"]Definition for "big bore" [font="Verdana, Arial, Helvetica, sans-serif"]: In the US, this term is used to describe handgun cartridges of greater power than the .38 caliber, and rifles .30 caliber and greater. In the UK, this term is used to describe rifle cartridges .40 caliber and greater.
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That is an interesting point and one I considered but didn't feel like looking up the KE data to check and also the reason I left out 9mm in my comment. I figured someone would call me on that and look up the KE themselves to point out my omission and save me the trouble. Not exactly how it worked out, but I appreciate that you did it all the sameOne man's squirt gun is another man'sCannon and vice versa.[font="Verdana, Arial, Helvetica, sans-serif"]Definition for "big bore" [font="Verdana, Arial, Helvetica, sans-serif"]: In the US, this term is used to describe handgun cartridges of greater power than the .38 caliber, and rifles .30 caliber and greater. In the UK, this term is used to describe rifle cartridges .40 caliber and greater.
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Funny by this definition some 9mm loads (115gr.>1230fps)will be considered BIG BORE and some 45ACP, 44spl and 45LC (230gr<865fps, 200gr < 927fps, 240gr<846fps, 250gr<830fps)loads will not.
Based on gun, barrel length, ammo, if you use the ft-lbs of energy delivered.
Whilenot a Big Bore as far as bullet diameter the .357 magnum is KING in terms of defense shootings.
I used a 38spl+p load that delivers 383 ft-lbs from a 4in barrel as comparison.
Oh yeah, you guys forgot about the 41 magnum.
EDIT:
So no one ask for a cite this is my opinion and not a statement of fact.
didn't feel like looking up the KE data
Is 40 Cal considered a big bore caliber ?
Very cool! Thanks for the link.didn't feel like looking up the KE data
Made easy.
Go down to the graph input the known velocity & bullet weight(below the yellow bubbles next to the words velocity/mass)then click push, pop and draw current.
The graph and yellow bubble(ME) will display energy in ft-lbs it can also do/be used for power factor.
Under lined are the words Switch to Power Factor Calculator for this data.
http://www.zknives.com/bali/bvtengy.shtml