Help identifying please identification

[jess_m]

Found this while out detecting for gold and from the other people I have asked it’s an air rifle pallet? But there was others saying no and I just can’t seem to find one exactly the same so still a bit unsure lol and if it is an air rifle pallet, year etc? If not any ideas on what it could be? Lol only one iv ever found. any info appreciated 😊 found in Victoria Australia

Ps sorry if this is a silly question, I’m very new to the whole identifying my finds other then gold lol

 

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[cudamark]

Lead?

 

[DanMcG]

Looks like 5mm or .20/ .22 caliber air rifle pellet. I looked but didn't find that exact one. Pellets typically have a flat hollow base though so I'm not 100% sure on my call.