Seasoned lifters often develop cranky shoulders and lose the ability to press overhead without pain. While dumbbells are a fine alternative, there's just something special about pushing a barbell overhead.
Try the seated sliding strict press, sometimes call the scrape-the-rack press:
It's similar to the Smith machine OHP, but even better. Here are the major benefits:
If you love overhead pressing, but the traditional military press hurts, use this variation to build some boulder shoulders.