I would say that youll be ok with the 400's. If you came into the shop I would have you buy 340's but that doesnt mean your bow wont efficently shoot 400's. The best thing to do is paper tune the bow and if the arrows are spongy or coming out like a noodle then it will show you in the paper. If tearing multiple tears then I would look into 340s. IF AND ONLY IF YOUR BOW IS PROPERLY TUNED!!!


All and all I feel like you should have no problem with the 400's because they are so close to one another just maybe leaning more on the 340 side. Still no problem.