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newbie needs help

 
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  #1  
Old 07-25-2011, 05:33 PM
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Join Date: May 2011
Location: North Idaho
Posts: 71
newbie needs help

Hi Guys, I could use some help with my new set-up.
I am new to long range shooting and am experiencing "lack-of-experience" issues.
I am shooting a 300WSM HS Precision which is new. I topped it with a Nightforce NXS 5.5-22 scope on a 20 moa NF base.

I dialed in the scope to shoot zero at 100 yds... nice 3/4 inch groups with Winchester supreme 180 gr. e-tips, shooting off a back-pack on a four wheeler for a rest. I decided to give a long range shot a try.... backed up to 450 yds, using a ballistic FTE calculator on my iphone it showed a bullet drop of -33 inches. So, I dialed my scope up 28 clicks or 7 MOA.. I torched off six rounds and got a 8 inch group that had a POI eight inches high....... What did I do wrong besides NOT following the well written article on setting up a new outfit found on this site? All comments are welcome including the smart-alec type....... Thank you


For clarification, I am not concerned about the grouping, but rather why the group at 450 yards was high by so much, I have never used a scope with tactical turrets and am concerned since I got a decent group but too high POI I did something wrong??

Last edited by regularjoe; 07-25-2011 at 09:07 PM.
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  #2  
Old 07-26-2011, 04:17 PM
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Join Date: Jan 2011
Posts: 109
Re: newbie needs help

I suggest you measure the speed of your bullet. Go to a chronograph and see if you are getting the speed that is advertised for your particular load. In many cases the speed will be different from the advertised velocity and you will need to adjust for that in your ballistic program.
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Old 07-26-2011, 04:22 PM
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Join Date: May 2011
Location: North Idaho
Posts: 71
Re: newbie needs help

Thanks lightwind,
I dont have a chronograph. The box of ammo said MV of 3010. I wondered if that was for a 24 inch barrel?? I have a 26" barrel.
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Old 07-26-2011, 04:31 PM
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Join Date: Jan 2011
Posts: 109
Re: newbie needs help

Try going to their web site and see if they post their testing conditions. If you don't have a chronograph, you might go to your favorite gun shop and ask if they have any contacts that might go out and measure your speed with you. My gun range used to have a chronograph but someone shot it up too many times so now we have to find someone with one or buy our own. You will run into this problem every time you get different ammo and also if you load your own so I would recommend finding someone to help you out. This is a common problem with ballistic calculators when you plug in standard numbers. They are great if you get the numbers right but can really cause a problem if you don't. The bottom line is to practice (as you are doing) before hunting season.
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Old 07-27-2011, 04:59 AM
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Join Date: Dec 2010
Location: Central Ohio
Posts: 132
Re: newbie needs help

Well, you know by actual shooting that your rifle hits higher than expected so just adjust your scope accordingly. The test barrel the ammunition manufacturer used to get the load data is no doubt different than yours to say nothing of other factors such as ambient temperature and humidity.
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Old 07-27-2011, 10:13 AM
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Join Date: Jan 2011
Location: Spokane, WA
Posts: 2,279
Re: newbie needs help

Where in north Idaho? If you're interested in the chronograph angle I might be able to help. If it shoots well go with it, but if you chronograph at the end you're going to go with what your sights tell you anyhow. If you were reloading you might make adjustments to your loads based on what feedback a chrono gives you.
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Old 07-27-2011, 10:29 AM
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Join Date: May 2011
Location: North Idaho
Posts: 71
Re: newbie needs help

Quote:
Originally Posted by HARPERC View Post
Where in north Idaho? If you're interested in the chronograph angle I might be able to help. If it shoots well go with it, but if you chronograph at the end you're going to go with what your sights tell you anyhow. If you were reloading you might make adjustments to your loads based on what feedback a chrono gives you.

Harperc,

I live in Post Falls and could use all the help I could get. Let me know if were close. Thank you
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