Front Squat 6-23-10

Front Squat - 185x3, 205x2, 225x2, 250 dumped it at the bottom. Was planning on trying for 295 as a PR. My left hamstring is feeling hinky. Felt it in the 225 set but did the set anyways. On 250 felt it more. At the bottom the hamstring was tingling and felt like it was ready to pop. Weird feeling that I haven't felt before. Didn't want to risk it so called the workout there. Frustrating, but gotta listen to your body and live to fight another day.