What is the most underrated cartridge?

Since nobody has mentioned it I will add the 9.3X57. Very weak factory loadings and its perceived as a short range, mysterious and antiquated cartridge.
Put it in a strong action, crank up some stout hand loads and you have about the most efficient and manageable cartridge for nearly any game out to most real world hunting ranges. Serious power. 30-06 type recoil in very light and fast handling rifles.

in the old days the 9.3x62 was loaded to 9.3x57 speed. don't know why but the 286-293 grains of the 9.3x62 was only at 2200fps in loaded factory ammo. maybe the bullet was not as strong but Kynoch was already a good example of what a good bullet can be.

don't know why as we all know that the actual bullet can handle more speed.
 
in the old days the 9.3x62 was loaded to 9.3x57 speed. don't know why but the 286-293 grains of the 9.3x62 was only at 2200fps in loaded factory ammo. maybe the bullet was not as strong but Kynoch was already a good example of what a good bullet can be.

don't know why as we all know that the actual bullet can handle more speed.

The reason why is the heat sensitivity of older powders, which were peaking at high temperature. Same went for any belted Magnums prior the late '30's.

The 9.3X57 is a different story, though. The reason why it was never loaded to higher pressures (and about the same thing went for the 9X57) is the fact that the thiny shoulder was hard to manufacture with very precise headspace. That's not without reasons that H&H introduced the belted magnums; it's because it was much easier to produce rifles with tight headspace, seen the small distance and squarish angle of the top of the belt - vs an elusive "datum circle" at the shoulder of a bottleneck cartridge.
 
Having NOT yet read through this thread, I'll say the .22LR up front, and then I'll read the responses of others to see how many believe that the lowly .22LR is much more efficient and effective, within range, than the vast majority actually believe it is.

You know a native girl killed a trophy, world record grizzly with it, don't you. Our oldest son, living and working as a missionary for 20 years in Senegal became a legal big game resident hunter and killed more game with his single-shot .22LR than with anything else, including a couple dozen warthogs -- for which some believe a .375 H&H is about right!

Bob

www.bigbores.ca
 
Now this is probably more of a long forgotten cartridge than maybe an underrated round, but this Fall I am going to put some meat in my freezer using a dandy little Pre-64 Mod. 70 chambered for the 256 Newton...
Excellent combination Kevan - I will be using my original Newton Rifle in .256 this fall, as always. PM me if you would like to compare loads, my Granddads loads were developed for accuracy, primarily in this rifle of course, but could be worth a try in yours as well.
 
The venerable .30 WCF, aka .30-30 Win is pretty underrated.

It's capable of more than it's usually given credit for.

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NAA.
 
My vote will be anything either 6.5 mm or 8mm. The 6.5 has so much going for it, yet it seems to be often overlooked - the 8mm is the gap between 30 and 338 calls - big hole without silly recoil in most chamberings...
 
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