RIO PRIMERS

[Stan Hillis]

Originally Posted by Andrew Sacco

Yeah, except patterns don't blow you front hand off, pressure does.

Agreed completely, but note that I didn't say pressures should be ignored, just that the effects on patterns, of switching primers, shouldn't be ignored.

Said another way, while low pressures are beneficial to the life of a vintage gun, they don't guarantee fine patterns. Only pattern testing determines that.

[Mike of the Mountain]

Pattern testing will only give an indicator of point of impact. A 2D pattern does not give a true representation of a shot string in flight. It is fine for testing if you are shooting at a static target, such as a turkey head.