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SK rifle match bc?
- Thread starter NorthWesterner
- Start date
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.
finnaccuracy.com
So, for medium distance, we use the 0.132 as overall best average.
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.
Long range 22LR trainer - how to get best out of it?
22LR rifles have always been very popular. Most of us have one sitting in safety. Some of us have also spent quite a bit hard-earned money to make their small rimfire feel and look similar to favorite big center-fire. All in sake of realistic low-budget training. It is also not too uncommon to...
finnaccuracy.com
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.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.
Long range 22LR trainer - how to get best out of it?
22LR rifles have always been very popular. Most of us have one sitting in safety. Some of us have also spent quite a bit hard-earned money to make their small rimfire feel and look similar to favorite big center-fire. All in sake of realistic low-budget training. It is also not too uncommon to...
So, for medium distance, we use the 0.132 as overall best average.
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.
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.
I stand corrected. My apologies, been out of the 22game for a while (aside from squirreling with my glenfield 60
).
Anyone shoot the federal gold medal match. My Vudoo loves it. Just picked up a bunch of it. Gotta true out my bc this weekend.
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.
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.
Listen to No BS BS part 3 podcast with Frank, Brian and Emil. Good 22 info there. Velocity is key.
