Ok, went and did some checking and weighing and measuring. The 458 Lott ultra lite by Bijou creek does weigh 5.3 lbs. It has an 18" barrell. I also have 2 other lightweights from B. Creek that also originally belonged to Safari Kid. I have a 6.5 lb 500 Jeffery, based off of a Win. M70 action with a 16 1/2" barrel, wood laminated stock. The third lightweight big bore is an 8.0 lb 600 overkill. I had but eventually traded a 4.3 lb lightweight gun in 416 remington. It was shot at a big bore shoot in Julip Texas about 4 or 5 years ago. All of theses guns came from Safari Kid. I would not have made the guns without a little more weight. There is a picture of the 600 overkill and the 458 lott together over on Acc. Rel. search "bijou Creek 458 lott" the 3rd post shows the picture. With the shorter barrels, you dont get full velocity of factory loads, but they still kick plenty, even for a guy that shoots alot of big bores.