Recently I purchased a Browning BLR Lightweight '81 chambered in .308 WIN. After taking it to the range with a few boxes of ammo, and my best friend, we discovered that it does not like any bullets heavier than the 158 grain. So once we found the bullets, it was time to dial in the sights. Now, to be fair, I am wanting to keep iron sights on this rifle and get as much range out of it as possible. It's a saddle/pack rifle and I do not want to put optics on something that is going to get bounced around a lot. I have found that I have an issue focusing on the factory front sight, which is not more than a small brass button. So I will be swapping that out for a green or orange fiber optic. However, the rear sight may need to be swapped as well. I would really like to hit a 6 inch target at 300 to 500 yards with this rifle. But if I can't swap out the rear sight, that may not be possible. The windage adjustment is extremely limited. Does any one know of rear sights for this? Or where I can start looking? I have crawled all over Midway USA, and even called Browning. Although I can find factory parts, I need to up grade them to better suit my needs. Other than these minor issues this is an awesome pack rifle. The deer around were I live here in Montana are pretty stupid. In fact, this next season I plan to kill one with my Ruger GP-100 and also with my .45 Colt Ruger Vaquero. Elk are a little more tricky, and we usually ride horses when hunting them. Hence the saddle rifle. I just need to get better sights. Any advice would be very helpful.