1. Genuine, original WWII K98 Sniper
2. M21 (Vietnam era sniper version of the M14).
3. A Montana or Blaser or other "boutique" level .375 H&H Safari gun.
4. HK 91 .308
5. HK 770 .308
I had to edit myself quite a bit to have such a short list.
Mauser Werke, Schmidt-Rubin, Colt, Walther, HK, Weatherby, Browning, Ruger, Beretta, Savage, Bushmaster, Marlin, Mossberg, Remington, PTR, Saiga, S&W, Sig Sauer....a few friends of mine