yeah same action and all. Im betting the kodiak stock is hollow. What are you adding to your stock to make it heavier? I just did a paper test on my x-150 after i removed the inside paint and very little material and it floats right down to the first lug. I cant wait to shoot it again and see if theres a difference. Number one thing on my list is replacing those plastic sights i put on it, the front is moving around on me a little i noticed. But hell for $20 i needed them that season and they worked. But tell me what you're doing to make the apex heavier lol.