I had a rifle built on a Defiance Machine action with a Bartlein Barrel 1-9 twist finished to 26" chambered in 7mm SAUM. I was able to secure enough brass to last a while. I was able to shoot 1/2 MOA at 100 yards. Load Data: Norma Brass, COAL of 2.830", Berger VLD 168 grain, 59 grains of H4831sc. I recently shot a 235lb Boar in Texas from about 200 yards and he instantly dropped. I am looking forward to shooting at longer distances, but so far I am pretty happy with the results I have had so far. I have nothing but good things to say about 7mm SAUM.