I'm looking at buying a new Ruger GP100 in .357 to use as a house/truck gun and as a companion for outdoors excursions. I'm not sure whether I should get fixed or adjustable sights. Adj. seem nice, but the models with them are quite a bit heavier than those with fixed sights - not a huge issue becasue this isn't a carry gun. Plus, the sight picture with the fixed sights isn't too bad. I'll probably be shooting a LOT of .38's through it at the range, along with a box or two of hot .357's every now and then. Let me know what you think.