Gallager?

[Joe G from Md]

Found these in Williamsport Md. I think they are Gallager's but not sure, could use a little help.

 

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[Davers]

I have never Dug one (I don't think) but from my book they look close .

Should be .50 cal, & the Book says Should have a 'Cone Cavity' The middle picture looks like it has a 'Small Cone ' the one on the right looks a little bigger.

I'm goon guess these bullets were fired or burned.
My opinion they look like Gallager bullets, just not 100% ....but close.