I just butchered a bunch of my Cornish X and had some for supper. The leg was the only thing we ate and it seemed really chewy, not at all like store bought. I was wondering if this is typical. The birds range during the day, were 10 1/2 weeks old, not real heavy ( 3 lbs 4 oz average). They did have quite a bit of yellow fat. I have had them at my house for about 2 weeks feeding them a mix of layer and finisher (they are housed with my hens) in addition to ranging. Prior to me getting them back the person that had them fed them mostly a locally purchased feed which looks like it is just ground up grains. I cooked the legs in bacon grease at a pretty high heat and cooked them well. They weren't dry just chewy. The chewiness reminded me of squirrel. Could one of the reasons be that it was fresh and hadn't aged or been frozen therefore not "tenderized" through muscle tissue breakdown.