CIL Copper Tip Expanding or Remington Bronze Point? How can you tell?

[Fox]

I have a bunch of loose copper coloured tipped bullets, 0.311 and 0.308. I assumed Bronze point until I learned about the copper tip expanding. Since these are in Ontario I bet they are CIL but is there any way to figure it out? Apparently the Bronze point blew up like a ballistic tip but the Copper Tip were more controlled.

I figure you guys would know, ha ha.

Thanks