Comprehensive testing with a range of widely-used reloading powders has demonstrated that 209 Premier STS primers, in comparison to other commonly-used primers, can reduce the high-to-low velocity spread in reloads by up to 40%. This enhancement in velocity consistency is a significant advantage for individuals reloading target loads for practice or competition.

The primer with unparalleled consistency and reliability in performance across diverse applications
Premier STS primers optimize ballistic consistency by reducing shot-to-shot velocity variations by up to 40% in reloaded ammunition
Premier STS primers are fully compatible with Remington's former 209 primers, allowing seamless substitution without necessitating alterations to existing reloading data or published formulas
The high-temperature, non-mercuric and non-corrosive mixture guarantees complete powder combustion and a clean barrel
Remington primers incorporate an all-brass primer cup and a brass-plated battery cup, featuring a covered flash hole for enhanced ignition reliability and performance consistency

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