After viewing
THIS THREAD in the Reloading Forum, I finally got around to pulling one of my MK262 Mod1 BLEM's from Cabela's apart.
Here is the bullet: A 77g. Sierra MatchKing Boat-Tail Hollow Point (not a true hollow point)...
The most obvious observation is that the MK262 Mod1 has a VERY MILD cannelure. This differs greatly from typical military bullets with a cannelure and I can see where this cannelure would have very little detriment to the famed accurate flight of these bullets. It also looks to keep the strength of the THIN copper jacket intact.
I also didn't notice any SEALANT on the bullet or the case mouth. But the grip on the bullet was TIGHT as the scrapes/scratches on the jacket during removal show. I didn't see any sign of traditional roll or taper crimp but the bullet was tight in the case. Maybe a BUSHING-type of crimp?
Here is the powder: Looks like TAC but much more spherical and smaller spheres. See link above for a very good powder comparison...
This round had 26.0g of powder. I tried to reclaim all of it from the puller. Only ONE round examined.
The case is a typical WCC '04 case. I don't know what primer is used. Primer is SEALED and CRIMPED.
Rmpl