Rio Ammunition’s Star Team EVO STT328 is a competition-focused training shotshell designed to deliver consistent patterns and reduced felt recoil through component selection and load engineering. The load is offered for 12 gauge shotguns with a 2.75 inch case and a 1-1/8 ounce payload. This cartridge is positioned for dedicated practice and competitive shooting contexts where consistency and repeatable performance are priorities.
Key Specifications
- The cartridge line is Star Team EVO STT328 by Rio Ammunition.
- Designed for 12 Gauge shotguns.
- The case length measures 2.75 inches.
- The payload weight is 1 1/8 oz.
- The shot size is #8.
- Published muzzle velocity is approximately 1200 fps.
- Each box contains 25 rounds.
- There are 10 boxes per case.
- Brass length type is listed as Low.
- Shipping weight is listed as 2.32.
Purpose-built for shooters who prioritize accuracy and consistency during practice and competition, the Rio Star Team EVO STT328 offers a measured balance of velocity, shot payload, and reduced felt recoil to support repeatable performance. Its specification set makes it suitable for organized training sessions and events where dependable, uniform cartridges are required.





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