Got a bag of these that had 57 of them in it for $4.00. Figured they were worth it no matter what they were.
 
They are NOT Lapua 155gr Mega, which is what I figured they were. I have some of those and they are made differently.
 
These weigh 155.5gr, give or take a couple tenths. Measure .264"x 1.285ish. They are a "protected point" with a slightly resessed nose, like a tiny hollow point. They have a thick tapered jacket with a heavy solid base and a thin cannelure groove followed by what looks liked a tapered crimp groove for roll-crimping on a cast bullet, then another deeper one of these "crimp grooves" that is backward a little bit further back. They look like they'd be a "big game" style bullet, as I'd be surprised to find one of these expanded past that crimp groove area due to the thickness of the jacket there and overall bullet length.
 
Anybody recognize them? Norma Oryx or something?

Hi subsonic,

    They look a bit like a RWS bullet, so may I suggest that you take a look at the RWS bullets, I think you can do that online.

I looked at RWS's website and did not see anything that matched.
 
Any more ideas?

Well there is a South African outfit which makes some bullets similar. Now I need to either remember who they are or find the article!

I will also see if I can find my old RWS info as it still reminds me of one of thier bullets.

It's NOT South Africa:
http://gscustom.co.za/
Or this German:
http://www.lima-wiederladetechnik.de/index.html

It looks like an RWS "Evolution" or RWS "Dopperkern"*

*=Double Core.
Here is the PDF from RWS
http://www.rws-munition.de/images/geschosstabelle_de.pdf

Wolf

Thanks for the suggestions.
 
 
Still doesn't quite match the illustrations, but maybe they are very general?
 
The thing that throws me is the deep, tapered cuts in the jacket.
 
The pic I uploaded shows the jacket from the inside after being cut off of the core, above the other half of the jacket with the core still in it, core side down. It was obviously not bonded, since the jacket popped off of the core with little resistance, leaving a smooth, soft lead core that is easily marked with a fingernail.
 
My picture taking ability is not that great on close ups though.