EvilGenius
Member
Hey guys I need help zeroing the diopter iron sights on my PTR91 for ranges in yards.
I understand the process of zeroing sights in general. The problem I am having here is that most of the ballistics data I can find for .308 (specifically HSM 168gr BTHPM) is all in yards. The 0-100, 200, 300 & 400 settings on the rear sight on my rifle are for yards. So while I could zero any one of those for yards. It'll throw off all the other distances.
I don't expect hunting accuracy from the irons on this rifle and I think the 300 & 400 meter settings are a bit optimistic, but I'd like to at least have the 200m setting close.
I can find tables that will tell me the distances in meters, but 100 meters is the shortest distance listed I can find and this rifle has not been zeroed before and I know the sights are off. I need to get it close on paper at 25yds first before taking it to a longer range.
I understand the process of zeroing sights in general. The problem I am having here is that most of the ballistics data I can find for .308 (specifically HSM 168gr BTHPM) is all in yards. The 0-100, 200, 300 & 400 settings on the rear sight on my rifle are for yards. So while I could zero any one of those for yards. It'll throw off all the other distances.
I don't expect hunting accuracy from the irons on this rifle and I think the 300 & 400 meter settings are a bit optimistic, but I'd like to at least have the 200m setting close.
I can find tables that will tell me the distances in meters, but 100 meters is the shortest distance listed I can find and this rifle has not been zeroed before and I know the sights are off. I need to get it close on paper at 25yds first before taking it to a longer range.
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