Sierra 130gr HPBT MatchKing

[Second]

Little more info from Sierra.

I continued the conversation with Sierra and regarding to the reply from Sierra that I posted earlier, I asked this:
"So basically, the TMK is the GK with a resin tip?
And the new MK is a ?new? bullet?"

The reply from Sierra:
"No, not really.
We designed the TMK to get a higher BC than the GK.
Later we saw we could make a few more changes to get an even higher BC, so we brought out the New MK this year."