On vacation a couple days. I spent all day yesterday shooting 50 rounds virgin brass all at 28 grains. Butchs, Eliminator and hundreds of patches. It stopped copper fouling around 30. Brought my fancy Teslong to the range. Shot all 50 in one hole at 100. Not so small a hole that is. Anyway this morning I did this OCW with the once fired brass. 200 yard because it was alittle windy. Brought my fancy new Labradar also. Best group, worst data! Why did I buy this chronograph? Mike