BOSS Settings For 338 Win Mag?

Fairlane66

September 16, 2011 17:21

I'm sighting in my Win Model 70 Stainless Classic tomorrow and will be using Winchester Fail Safe ammo with the 230 Grain bullet. Rifle is equipped with a BOSS, but I don't have the card showing the recommended settings. Can anyone tell me the recommended setting for this bullet or where I can find the BOSS info. Appreciate any help. Thanks.

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  DAMMITDON

  September 17, 2011 01:49

  Boss ave. sweet spot is 5.25 for win 230 gr.

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  nononsense

  September 17, 2011 08:26

  Fairlane66,
  
  These charts are available online:
  
  http://www.winchesterguns.com/customerservice/qna/detail.asp?id=273
  
  Best.

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  Fairlane66

  September 17, 2011 20:26

  Thanks folks, I used 5.25 and the rifle grouped really well when the wind wasn't gusting to about 30 MPH. What a day on the range! Unfortunately, today was my only free day to sight in before the season. I can't say the gusty winds helped my confidence, but I got what I needed.
  
  As an aside, I was again amazed at how easy the BOSS-equipped 338 WM was to shoot. I sighted in two identical Model 70s, the BOSS-equipped 338 and my backup gun w/o BOSS in 7MM WSM. It might have been my imagination, but I swear the 7mm WSM kicked harder than the 338 WM. I know some claim the WSMs give move of a push than a kick, but it sure felt like a kick to me! The muzzle blast from the BOSS was certainly hard to top, but for shootability, the 338 won hands down.
  
  Again, thanks for the data. I remember searching for the BOSS chart on the Winchester site months ago and couldn't find it. Glad to know it's now there.

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