Most efficient cartridge?
 

What is the most efficient cartridge out there? My vote goes for the 22 Rimfire. Any other opinions?

RE: Most efficient cartridge?
 

What do you mean by efficient? Do you mean velocity to powder ratio or possibly which cartridge generates the most foot pounds with the least amount of powder?

RE: Most efficient cartridge?
 

...I think the .22 is the most popular! Efficient??? ....<img src=icon_smile_big.gif border=0 align=middle>

Hunt Safe!

Jack

RE: Most efficient cartridge?
 

If you mean efficient in price...a 22 is probably cheapest. However...it you have to shoot a black bear 783 times to kill it with a 22, it'd probably be more &quot;efficient&quot; to use another caliber, not to mention more intelligent.

RE: Most efficient cartridge?
 

By effecient, I was meaning powder versus velocity ratio.

RE: Most efficient cartridge?
 

P.O. Ackley did not have access to todays cartridges. But according to his test the 7x57mm was the most efficient. Only one better at the time,7x57mm ackley improved.
Some of the short,fat cartridges or PPC's or other Benchrest cartrdges may be better than that now days.

RE: Most efficient cartridge?
 

So many of the cartridges on the market are &quot;over-bore&quot; and that doesn't help efficientcy. The 25-06 is even over-bore.

RE: Most efficient cartridge?
 

That said Corey,
I don't know just which one but one in the close to straight walled cartridges would have to be it.
For example, a 30-30 with a 170 grain bullet is not as fast as a 32 special with the same weight of powder and a 170 grain bullet.
A 30-06 and 150 is faster than a 270 and 150 bullet but the 270 is flatter trajectorywise because of the aerodynamics of the skinnier bullet.
The length of the bullet is a big factor. The shorter bearing surface on the bullet is the path of least resistance. If someone could build a round that was perfectly straight it would win.
The 22LR is a lead bullet and has very little drag. The same is for other rounds loaded up with swaged lead bullets.

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RE: Most efficient cartridge?
 

I thought I read somewhere that the .22 short was the most efficient, because it only uses 2 grains of powder or something like that.

RE: Most efficient cartridge?
 

.222

RE: Most efficient cartridge?
 

Funny that you asked that guestion, I just read an article in last months issue of Guns and Ammo. The writer said the win 308 was one of the best cal. for efficiency. Just my $.02 which isn't worth much!
Zeak

RE: Most efficient cartridge?
 

I remember reading somthing about the .308 being very efficient at turning a smaller amount of powder into lots of velocity. The article was comparing big game hunting rounds and did not mention .22 rimfires.

Just my $.02 (Canadian) which really isn't worth spit these days.

RE: Most efficient cartridge?
 

My .50BMG is more efficient in killing anything I was to aim it at...'nuff said.

RE: Most efficient cartridge?
 

Hk45USP,
Good answer.
I hope to find out soon how efficient the 6mm BR Remington is.

Rem. 222

RE: Most efficient cartridge?
 

If you're figuring in powder vs wieght with speed figured in...I would think that one of the 22 caliber cartridges would be right up there. Maybe a 223 or 22-250 or 220 swift...something like that.