Which calibers are short action?

A short-action rifle has an action that is loosely based off of the overall length of a . 308 Winchester cartridge.
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Some other common calibers that are a short-action are as follows:

. 243 Winchester.
. 260 Remington.
6.5 Creedmoor.
7mm-08 Remington.
. 308 Winchester.
. 338 Federal.
. 358 Winchester.

What is the best short action caliber for long range?

270 Winchester one of the best all-purpose, short- and long-range cartridges of all time. The 27 Nosler bests the . 270 Winchester by about 400 fps with 150-grain bullets. Now, you might think this cartridge is new and unproven.

Is a Remington 700 270 a short action?

A . 270 would be classified as a long action cartridge.

Is 6.5 short or long action?

It's a short action case with a longer than short action maximum cartridge overall length. Kinda sits in between a short and long action in overall length. In a short action you give up 0.155" of the brasses powder capacity with heavy for caliber bullets. Max length of 6.5PRC is 2.955".