Bounty Hunter QD II, Garrett Ace 150 & 350, Fisher ID Excel, Fisher coinstrike, Fisher Cz6, Fisher Gemini II, Garrett AT Pro, Garrett GTI 1500,Teknetiks omega 8000, Nokta Fors Gold
Cant get much without something to show size of it but with it having a full casing like that I feel comfortable saying its not very old,meaning a 100 years or less. Need more details to give a better response
Bounty Hunter QD II, Garrett Ace 150 & 350, Fisher ID Excel, Fisher coinstrike, Fisher Cz6, Fisher Gemini II, Garrett AT Pro, Garrett GTI 1500,Teknetiks omega 8000, Nokta Fors Gold
Funny that the 35 rem was mentioned, I own a marlin lever action 35 Remington and upon looking at the cartridge its looks like it..rounded bullet tip(since they sit nose to tail in tube magazine) but as I said before without something to compare size cant be 100% but id say a lever action rifle cartridge