You are going to be able to experience a snug fit of the pellet to the
rifling of your barrels and also know that you will be experiencing
higher impact and less lead residue with quality Beeman pellets.
For Olympic competition, you will want to have plenty of the Beeman H&N Match pellet wadcutter .177 in your arsenal. H&N standing for Haendler & Natermann, the leading pellet design with a flat head designed to cut a perfectly round hole in a paper target to aid scoring. You will be able to use the wadcutter for hunting because of its excellent impact and limited penetration.
Next, for long range shooting and maximum penetration you will want to have plenty or the Beeman Silver Arrow pellet .177 and plenty of the Beeman Silver Sting pellet .177 on hand. These will be the ones for your single-shot air guns and you may want to avoid them for your repeaters.