Peterson Has New Coating
Chamfering the mouths of casings, prior to loading them with a bullet, has been a topic of debate in the reloading community since reloading became popular with private consumers. Does it make a difference in accuracy or consistency of bullet seating depth? Does it make a difference in how accurate your handloads perform? Does it prevent the bullet from having its’ jacket scarred up when it is inserted into the casing?
On the surface, it makes sense to chamfer the mouths of casings to prevent any burrs (which were produced from over-all-length trimming at the factory) from catching on the bullet jacket during loading. Since, on the surface, that theory seems to make sense, when we first started producing casings for hand loaders, we decided it was necessary to chamfer the inside of the casing mouths prior to packaging and shipping them to our customers.