Based on the 308 round model by is-serp, this round has a slightly muted tip to help prevent printing issues with a standard 0.4mm nozzle.

Use dummy rounds when practicing loading your rifle or magazine.

I print this with 3 walls with 40% gyroid infill at  .15mm layer height to ensure strength. Print with a brim to ensure stability due to height. Print in nice bright colors.

Take GREAT CARE not to jam the dummy in your chamber. Any jams need to be dealt with by a reputable gunsmith.