Hornady 55 grain BT FMJ will pass for military M193,
But they shoot MUCH better.
I get between 5/8" and 3/4" groups through a NM barrel,
3/4" and 1" groups in most common barrels.
(Depends on how my eyesight is that day.)
If its just a paper punching day, these are what I drag out.
They feed really well in AR/other auto loaders,
Don't usually need a ton of crimp since they are pretty well uniform in size,
And the weight doesn't wonder around like other bulk bullets you can get for the same money.
Not that small weight differences matter too much @ 100 yards punching paper,
But its good to know you can reach out farther if you want to...
I find them VERY concentric, like another poster said, you can find cheaper,
But between diameter size differences, non-concentric, up to 2-1/2 grains up or down in weight,
I pay the $2 to $4 extra per 1,000 and get Hornady.
Three less things to check and/or worry about!
If you decide to go with something other than FMJ (varmint hunting?)
Switch to 55 grain V-Max (ballistic tip) and you will be pleasantly surprised.
Other than bullet seating depth, no other changes and they shoot great!
More expensive than FMJ, but for hunting/terminal performance, its hard to beat that V-Max round.