I don't know how many thousand rounds of Blazer Brass in 9mm that me, my son and friends have shot through my various handguns, but it's been a bunch. For range ammo it's one of my favorites as it's affordable and has always given decent results. Repeat that it has been affordable, which is the reason I bought my first thousand rounds of it years ago.
All mine date from pre-pandemic times as I had loaded up on ammo Big Time before the 2016 election which I expected the ugly hag to win. She didn't, so I have enough 9mm of various brands to last a good while.
My neighbor goes shooting with me most range trips and has recently bought several hundred rounds of Blazer Brass locally and ordered another thousand through SGAmmo. His looks and shoots the same as my pre-pandemic rounds, so not sure what is off about your own.
For what it's worth, if I put a Blazer Brass round down beside a round of some of my other affordable range ammo brands like Sellier & Bellot and ask a shooter to pick one based on looks alone I'm certain most would pick the S&B round. It simply
looks better. But in my own hands the performance on target is about the same or only marginally better than Blazer Brass. Not enough to matter for range ammo. I don't reload 9mm so can't opine on the brass for home loads. At this time Blazer Brass and S&B are exactly the same price per thousand at SGAmmo.
SGAmmo.com, bulk ammo sold by the case at the best lowest prices for sale anywhere online
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Buy 1000 Round Case - 9mm Luger 124 Grain FMJ Sellier Bellot Ammo - SB9B online at SG Ammo. Bulk ammunition at wholesale prices. Fast shipping, best prices guaranteed. Premium ammunition for sale.
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Hope the Blazer Brass shoots well for you since you've invested in a couple hundred of them.