Ruger isn't going to sell something incapable of handling the factory loads as marked on the frame. You've got nothing to worry about.
The SS .45 flat-top is pretty interesting to me listed at 36 ounces but I'm not sure I can get quite the velocity I want and stay within its pressure limits. Also not sure any of our clown gun dealers in the area will special order.
The 36 oz ain't happenin'.
Have one in each length and they come in at 2.56 and 2.59 lbs respectively.
That's roughly 41 and 41.5 oz.
Pete
