I bought my daughter the savage axis .243 and the thing kicks like a mule, I'm a big guy and it surprised the hell outta me. My buddy says it shouldn't kick that hard but when he watched me shoot it and how much it kicked back he was surprised as well. He gave me this stuff to pour inside the stock since it's hollow and very light but it's like concrete and I'm not sure I want to use it. I don't want anything permanent in there in case it doesn't really work, has anyone added weight to a stock and had good results? I've also tossed the idea up about buying her a Boyd's stock instead. She shot it once and doesn't like how bad it kicks.