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adg cartrige company.

They are very good cases. Be sure to heed their warning of backing off on max loads. Work up carefully and you will be very pleased .
 
I bought 250 for a 7mm Sherman Short Mag. The case necks had to be turned down to 12 thousandths neck wall thickness to fit the chamber cut from my reamer. I weighed the completely prepped cases to see how close they would be. The HIGHEST weight variation for about 25 cases was no more than 3/4 grain! Measuring the shoulders with a Shoulder Bump Gauge from Whidden produced variations of less than 1 thousandths! I have not shot them yet, as my rifle has not been completed. However, Tom Holbrook, a good friend of mine, stated he took one case and started out at a max load for a 7mm SAUM A.I. and slowly went up. At over 1 grain OVER max, he shot it several times and the primer pockets remained as tight as virgin! With these standards, I would think that it is as good as Lapua. However, once I start shooting them, I will determine just how good the brass is! But it is very promising!
 

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