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Old November 26, 2019, 05:06 PM   #34
Paul B.
Senior Member
 
Join Date: March 28, 1999
Location: Tucson, AZ
Posts: 3,390
"In my experience shooting factory loads they are usually at least 100 fps slower than advertised in my rifles. Sometimes more."

That's true. A few years back I ran a test of some Winchester 180 gr.Power Point ammo over a chronograph. I ran three shots each from 22", 24" and 26" barrel and the results were interesting. The 22" rifle did almost exactly 2600 FPS, the 24" barrel 2635 FPS and the 26" barrel 2710 FPS. The only rifle that came close to advertised velocity was from the 26" Barreled Ruger #1B.

FWIW, I've used the "sight in 3" high at 100 yards" for so long and it has always worked just fine for me. I shoot either the 150 gr. Sierra Game King or Nosler Partition from my .270 sighted in that way and a hold center chest has always brought home the venison for me out past 250/300 yards.
Paul B.
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