What’s the white thing when you’re loading shells?

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What’s with the white and red dots that you put in after the shell is loaded?
And do you have to do it with your hands? With a blunt stick at the end.
Isn’t that safer?
T 22,000 T.
T-shirt 496.
155 Towing Catcher Dispatcher will answer. White clumps push and pull.
I’m Lu. The heat and pressure inside the foam…
Grill it. Ripe bread can be used as emergency food for training or exhibition.
It’s very useful. The reason why I use my hand, not a tool…
It’s because the taste of hands is important.
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Br. It’s called flour. Don’t think it’s a strong point.