
See here for details...
http://www.6mmbr.citymaker.com/catalog/item/1433308/1167497.htm
Check it out guys, very cool and useful, and made by a geat guy

I have the BR-25 version so i can set up my record rounds for all three distances involved in local groundhog matches --5 records shot each @ 100, 300, and 500,or 200M, 300M and 500M at Shippensburg)
All i have to do is refil the siters when they get low

Cheers,
JB