The 26 gram load at 980 fps sounds really light. No wonder Pete wasn't bothered the recoil, they have only 16% more muzzle energy than the typical .410-bore target load! (How come Winchester has to charge more for a shell that delivers less?)
ZUGG, forget the Aguila minishells and get some of these Winchester puff balls for your lady. If not available at your LGS, try
midwayusa.com