I've taken another look at them. I'm pretty sure the last 7 (with the exception of #7) in my guess were right. So that leaves me with #1, #2, #3 and #7 as questionable. I'm sure, of the first 3, one is the 358 Win and now I think one of the others is the 356 Win. So, I'm now going with

1) 308 Win
2) 356 Win
3) 358 Win
4) 350 Rem Mag (the belt gives it away)
5) 35 Whelen
6) 9.3x74R (long skinny case and rim gives it away)
7) 375 Win (bullet doesn't look big enough to be 40 caliber)
8) 444 Marlin (short flat bullet gives it away)
9) 45-70 Govt (rim gives it away)
10) 450 Marlin (belt gives it away)

So, my score now is..... ?

For what it is worth, if you like calibers along this line you should check out the 9.3x62 Mauser and the 375 H&H. I've got both and they are incredible calibers. I'd hunt anything in the world with either one.