Name the Cartridge

[mountainman]

300 rum and 7wsm?

Nada

[biggfish]

300 weatherby mag 270 wsm

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[mountainman]

In correct

[Oh Mah]

7mm-08 left .243 wssm right

[jkononen]

.223 left. 221 fireball right?

[mountainman]

7mm-08 left .243 wssm right

Nope

[mountainman]

.223 left. 221 fireball right?

Incorrect, but on the right track😉

[b23]

204 Ruger or 222 mag on the left and something off of the 221 case on the right, maybe 17FB

[Oh Mah]

.17 javelina on the right.

[mountainman]

204 Ruger or 222 mag on the left and something off of the 221 case on the right, maybe 17FB

Yes up! Good job!
204 and 17 fireball

[Oh Mah]

That was a good one. 

[mountainman]

That was a good one. 

Was a little tricky with no reference to size😊

[b23]

Some of these will be fairly easy and some maybe not quite so much.  Some, are wildcats, but non of them are exotic wildcats.

[Heiny]

17 hornet, 260,?,?

[b23]

17 hornet, 260,?,?

#1 17 Hornady Hornet is correct, but none of them are a 260 or even anything based off of the 243/260/308 case.