Mystery Brass

[RugerFan]

I found an unusual piece of brass at the range the other day. In the pic below, the one of the left is a .300 BLK, the one in the middle is the mystery brass, and the one on the right is a .223 Rem.

The head stamp on the mystery brass says .223 Rem, so it's obviously been reformed. The overall length is 1.550" and the mouth appears the be .30 cal.

A longer version of the .300 BLK? Anyone know what this is?

https://i.postimg.cc/hjGjmVx6/Mystery-brass.jpg (https://postimages.org/)

[Dieselhorses]

May be 8.6 Creedmoor.

[Sparky141]

if the case is .24" longer it is probably a 300 Hog HamR from Wilson
300 BLK Out case is 1.368" max
300 HamR case is 1.602" max
both can be made from 223 brass

[RugerFan]

if the case is .24" longer it is probably a 300 Hog HamR from Wilson
300 BLK Out case is 1.368" max
300 HamR case is 1.602" max
both can be made from 223 brass

After Googling "300 HamR" I think you are right. This brass may have just been trimmed a tad short, but otherwise it makes sense.

[Steelshooter]

7.62x40 Wilson combat, just a hair shorter than the ham'r

[lefty o]

agree with the above, thats too short for the ham'r.

[RugerFan]

That’s another cartridge new to me. Yes with a case length of 1.565” that’s even closer.


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[Sparky141]

I forgot about the 7.62x40wt so that is probably the case since its a little shorter than the HamR