Peterson Cartridge

Peterson Cartridge's 6mm GT brass is engineered for reloaders who demand consistency from case to case. This 50-round pack of match-grade rifle brass is sized right for competitive shooters and precision hunters working up loads for the 6mm GT platform. Peterson's small-batch production and rigorous quality control mean less sorting and prep work on your bench—more time shooting groups that count.
The 6mm GT is a relatively new cartridge that's gaining traction in precision rifle circles, and Peterson's commitment to match-grade standards shows in case uniformity, wall thickness, and primer pocket concentricity. Whether you're building ammo for competition or fine-tuning a hunting load, consistent brass is half the battle toward repeatability downrange.
One critical detail: Peterson's SRP (small rifle primer) 6mm GT brass features a 0.060" flash hole—smaller than the 0.080" found in large rifle primer cases. This means you'll need an X-small or undersized decapping pin when resizing and depriming. If you're new to reloading the 6mm GT or swapping from another cartridge, factor that into your setup. It's a one-time tool investment that ensures clean, efficient depriming without damage to the case.
Peterson Cartridge


Peterson Cartridge's 6mm GT brass is engineered for reloaders who demand consistency from case to case. This 50-round pack of match-grade rifle brass is sized right for competitive shooters and precision hunters working up loads for the 6mm GT platform. Peterson's small-batch production and rigorous quality control mean less sorting and prep work on your bench—more time shooting groups that count.
The 6mm GT is a relatively new cartridge that's gaining traction in precision rifle circles, and Peterson's commitment to match-grade standards shows in case uniformity, wall thickness, and primer pocket concentricity. Whether you're building ammo for competition or fine-tuning a hunting load, consistent brass is half the battle toward repeatability downrange.
One critical detail: Peterson's SRP (small rifle primer) 6mm GT brass features a 0.060" flash hole—smaller than the 0.080" found in large rifle primer cases. This means you'll need an X-small or undersized decapping pin when resizing and depriming. If you're new to reloading the 6mm GT or swapping from another cartridge, factor that into your setup. It's a one-time tool investment that ensures clean, efficient depriming without damage to the case.