Buying F size lead shot instead of Gamo 22 lead balls

[45flint]

I read that Gamo 22 round balls are really .215, thus maybe explaining why they roll out the barrel of my Haenel 22 pistol. Did some research and found F shot is 22 cal. You can buy it by the bag.

http://www.midwayusa.com/product/584...hot-f-8-lb-jar

Anyone ever try this, before I order 8 lbs of shot that could be a bust? Calculates out to 3500 rounds! Lol