These 4” square cork coasters have a variety of cartridges presented life-size and in most cases also 3.5” tall.
The standard set includes: 9mm, .45ACP, 5.56, .308, 12GA, and .22LR
If you'd like a different caliber, just let me know in the comments at checkout. I have upwards of 50 calibers accurately drawn to life-size.