Good morning all, I was reading over some of the recent threads on here and it suddenly occurred to me that I had a very poor grasp on what, exactly, a "Big Bore" rifle is. I know the "Wikipedia definition" which is "large-bore refers to calibers with a diameter of .40 inches or larger." but what does that mean to you? For example when I decided to go to Africa for the first time last year I purchased a .375 H&H. Having never shot anything (in the civilian world, not counting the service) larger than a 300 Win Mag the .375 was most definitely a "Big Bore" to me! I thought that surly the minimum caliber acceptable to stop an elephant must be a big bore, but by the definition I was mistaken. I then purchased a 404 Jeffrey. Now I certainly had the "text book" big bore, but I have come to find that some do not even consider this, nor the 416 that would come after it, to be a "big bore" rifle. So I'm asking the community: What, to you, is a "big bore" and why? Is it bullet weight? Speed? Recoil? Sheer machismo and history? Please let myself and the others who may be wondering but do not want to ask know. As always, thank you in advance for your time and wisdom.