I havn't ever loaded anything with match brass but If I remember correctly they recomend lower your load with this brass ( I may be wrong).

I always do what Gunfighter suggested and buy brass with the same lot number.

If you want to match this brass then go through and weigh each case, choosing the ones that are closest in wieght. You should be able to find about 150 cases out of a 250 case bag that are very close to each other, then trim them all to exact same length, debur and chanfer, and you are ready to reload with cases that should be very close to each other in pressure.

" Anyone can be a father, but it takes a real man to be a Dad"