A guy I know has 30.06 bullets from WW2. Still good?
Don't know. I did have someone give me some .357 rounds one time that were 30 years old (about 100 - two boxes) and every single one shot without a hitch. If they've been stored in a cool dry place and are not rusty they are probably good.
Also, I bought a couple of large bricks of Vietnam era .308 military surplus ammo a few years back and they have all shot just fine.
Probably, I’ve fired older ammo. But the problem is that older ammo used corrosive primers, and a lack of prompt and thorough cleaning can lead to a badly rusted bore.
I’ve shot WW2 30-06 with no problems. Much depends on how the particular batch was stored. Your mileage may vary.
If they haven't been flooded, or overheated, they'll probably go 'bang' just fine. I have fired .30'06 and .303 ammo of that vintage. Had a few hangfires with the .303, but the '06 was fine.
Opened a case of 45 ball with date and lot numbers from frankfort arsenal dated 1934. My EOD team was conducting an ADR ammo destruct request on suspect lot numbers etcetera .... We “destroyed” one round at a time for a few cases ..... flawless function in our 1911A1’s...... Old ammo is not bad ammo IMO. Remember the 1600+/- rounds of russian tin containers full of 7.62X54R ? 1920’s era crap looked like it was loaded yesterday.