I do know that. Here are some other things I know:ThaDoubleJ wrote:You might not know, but you can actually use a chronograph for things other than determining what rounds are subsonic in your gun.
1. OP asked about factory ammo. He doesn't reload.
2. OP isn't tuning any loads for a specific target velocity.
3. If OP doesn't already own a chrono, your advice would require him to buy one, and he would still have to buy and test the brands of ammo he listed.
4. The presence or absence of sonic crack is far less subjective than you seem to believe. And even if it was very subjective, what matters is OP's satisfaction with the noise level of his gun, which is a totally subjective endpoint.
5. Knowledge of the specific velocity of factory ammo does not guarantee it will sound good to OP.
Ergo, I conclude that:
1. Your advice will cause OP to spend at least $100 more than is necessary to answer his question, and will not stop him from having to buy, shoot, and listen to the same amount of factory ammo,
2. Objective velocity data is not needed to answer a subjective question, and
3. You are a glib smartass.