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SK rifle match bc?

It is the same bullet than with Lapua Center X or Midas, but BC is highly velocity dependant.
I was measuring with radar up to 100m and 0,174 correspond to velocity drop pretty well. However even on 150 and 200m the 0,132 was much more correct for both drift and elevation.
Guys at FinAccuracy did an extensive test for longer ranges 300 and and 350m where 0,122 was better match. It is worth checking their section devoted to 22LR trainer.

So, for medium distance, we use the 0.132 as overall best average.
 
It is the same bullet than with Lapua Center X or Midas, but BC is highly velocity dependant.
I was measuring with radar up to 100m and 0,174 correspond to velocity drop pretty well. However even on 150 and 200m the 0,132 was much more correct for both drift and elevation.
Guys at FinAccuracy did an extensive test for longer ranges 300 and and 350m where 0,122 was better match. It is worth checking their section devoted to 22LR trainer.

So, for medium distance, we use the 0.132 as overall best average.
Thanks for this. Using the 0.132 BC per Strelok and LabRadar chrono data, I found my Wolf Match Extra (Lapua/SK sourced, reportedly same as SK Rifle Match) had to be trued by almost 70fps (1066 actual chrono, 1133 trued) at 50 degrees F. While I have not trued by varying BC instead of velocity (yet - rifle is new and I had a match yesterday), this BC / trued velocity combination works. Yesterday's match consisted of 60 targets (20 each at 50, 100, and 150 yards). The smallest targets at each range were 2MOA or slightly less in smallest dimension. I cleaned all three ranges except for a single 100-yard "challenge" target, and I'm pretty sure I twitched just enough on that one to miss.

My point is, the 0.132 BC clearly works at 100-150 yards. I have shot larger (3MOA) targets at 300 yards and get consistent hits there as well.
 
SK Match=Lapua Club=Wolf ME. Same lines, same machines, different boxes.
I’ve got the email from Lapua on an old desktop somewhere.
.120 worked for my 1712 to 100m at 2500DA to 100m and close enough to get real dope for me out further.
 
Reviving old thread. Can anybody advise what group size I should expect at 100 and 200 yards with SK Match? Or I picked up some Lapua Center X and RWS Special Match, so if you have used them, please post it up.
My reading in the posts above is that BC = 0.132 should give me my 100 and 200 elevations from a 50 yard zero?

Rifle is a Tikka T1x.
 
Reviving old thread. Can anybody advise what group size I should expect at 100 and 200 yards with SK Match? Or I picked up some Lapua Center X and RWS Special Match, so if you have used them, please post it up.
My reading in the posts above is that BC = 0.132 should give me my 100 and 200 elevations from a 50 yard zero?

Rifle is a Tikka T1x.

You should expect 1 MOA groups out to 100 yards in good conditions. The BC of .132 should be close, but keep in mind the BC means very little for Rimfire subsonic shots and velocity is much more important to have accurate.
 
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sk long range rifle match I use .172 bc then use actual mv
out to 100 yards dead on after that I Use drop scale function every 50 yards out to 300 I found much easier to set and more accurate.