This plug was made by a company called Metric Unlimited, (http://www.metricsunlimited.com/

I got the info on this plug at Graygeard Outdoors. The plug works fine even though it came in looking really ruff. I shot it yesterday and have to say it works just great. I am almost totally happy with it with one exception. The 209 primers have a tendency to stick and this would make for an interesting situation in the woods getting a quick reload!

But the nice part is you can shoot BH209 powder with this plug. I am still in the process of testing different loads and primers. I started with Winchester 209 and CCI 209M primers. The Win 209 worked great. The CCi primers were really hard to remove from the plug. I still want to try Federal 209A primers.

So far the best load was my 300 gr. Hornaday XTP sabots and 85 grs. of BH209 powder. The more powder I used the greater the recoil and really no change in results. I was getting about 1.5" to 2.5" groups at 100 yds.