Patterns can change significantly as various choke tubes are tried, even making minor changes (sometimes just a few thousandths). Really good patterns often take a fair amount of experimentation.
There are some basics that will reduce flyer pellets: Reducing deformation of pellets is one big key. That is done by using the hardest shot available, choosing a wad that holds the entire shot charge, using a relatively slower burning powder to accelerate the ejecta relatively more gradually, and keeping velocity low. The latter will greatly reduce felt recoil also. He may even want to consider steel shot if it's permissible. A relatively slower powder also will keep pressure higher at the gas bleed hole, giving some help to cycling the action.
I realize he may not want to reload, which will make things harder. However, the basic elements above will very likely be found in the shell that he finds produces the best controlled patterns. It is very likely it will not be a cheap or promotional load. A good live bird (pigeon) load, 1 1/4 ozs shot over 3 1/4 dram equivalent powder, hard (and often plated) shot would be a good place to start. W-W and Fiocci make these to my certain knowledge, among others around the world.
If he does want to reload, look into Tom Roster's loads developed in search of 100% patterns for waterfowl. Some use shot buffer, which may or may not be ok for the game's rules.
Last edited by Fred; 11/08/06 11:29 AM.
