General Help with animation

Hey people, i reached this forum looking for help and i hope that it will help me.
My problem is the next: Now im trying to do a shotgun reload animation and i put the standby pose in the initial and in the final keyframe, now everything is ok; the problem comes in the moment that i start to do the second pose for example in the 12 keyframe and when i finish it i went to have a look at the hole animation for now to see how is it going but in the first and last keyframe the stadby pose is completly deformed, any solution for this? The uploadedphoto is the standby pose

It would help to be able to see what you’re having trouble with. Can you post some images? Or your .blend file?

uploaded…

your link???