Barrel bore measurement kits consist of handy push-through slugs made of soft lead. Due to their unique design and precise dimensions, you can easily push them through the barrels of your rifles and pistols using an ordinary cleaning rod. The rifling in your barrel will imprint onto the slug, allowing you to then measure the exact groove diameter of your bore(s). Knowing this information for each of your guns will allow you to order the perfect bullet size when buying bullets here at Mr. Bullet. We can also provide this service for you, for free, if you decide to set up an account with Mr. Bullet to order custom ammunition for your gun(s).
Similarly, our chamber casting kits allow you to make an exact chamber cast of your rifle or pistol, which you can then send back to Mr. Bullet for precise measurement. We can then use this information to design and build custom ammunition for your rifle or pistol that you can come back and order whenever you need. Just like the barrel bore measurement service, we can also do this for you, for free, if you decide to set up an account with Mr. Bullet to order custom ammunition for your gun(s).