Right. I never shot them thru a 9-twist.I have a 30 SM with an X Caliber CFW barrel in 9 twist. Just wondered if the 205s could be stable in that 9 twist ? They say 8.5 minimum
Right. I never shot them thru a 9-twist.I have a 30 SM with an X Caliber CFW barrel in 9 twist. Just wondered if the 205s could be stable in that 9 twist ? They say 8.5 minimum
Ok was curious. I built mine for the 225/230s but not quite fast enough twist for the heavier monos apparently. I really like that 205 Badlands BD bulletRight. I never shot them thru a 9-twist.
You may or may not be happy. I'd feel more comfortable "over" spinning than under spinning monos for sure.I have a 30 SM with an X Caliber CFW barrel in 9 twist. Just wondered if the 205s could be stable in that 9 twist ? They say 8.5 minimum
Yep that's exactly what I'm thinking. An 8 would be better than a 9You may or may not be happy. I'd feel more comfortable "over" spinning than under spinning monos for sure.
Call Badlands, there real helpful with stuff like this.I have a 30 SM with an X Caliber CFW barrel in 9 twist. Just wondered if the 205s could be stable in that 9 twist ? They say 8.5 minimum
Why didn't I think of that. Thank you.Call Badlands, there real helpful with stuff like this.
Fill out the data at the bottom and you'll get a good idea.Yep that's exactly what I'm thinking. An 8 would be better than a 9
Ok was curious. I built mine for the 225/230s but not quite fast enough twist for the heavier monos apparently. I really like that 205 Badlands BD bullet
Berger"s stability only applies to lead bullets, not monosFill out the data at the bottom and you'll get a good idea.
Twist Rate Stability Calculator
Our newly updated Twist Rate Stability Calculator not only tells you what your SG is, but it also lets you know if you are reaching your optimized BC.bergerbullets.com
So why do they list their .375 caliber 379 grain and 407 grain VLD bullets?Berger"s stability only applies to lead bullets, not monos
Appreciate the advice but that calculator has let me down more times than I care to speak of.Fill out the data at the bottom and you'll get a good idea.
Twist Rate Stability Calculator
Our newly updated Twist Rate Stability Calculator not only tells you what your SG is, but it also lets you know if you are reaching your optimized BC.bergerbullets.com
Berger"s stability only applies to lead bullets, not monos
According to Phil's response, yes. Enter the required bullet parameters, and you're GTG.So why do they list their .375 caliber 379 grain and 407 grain VLD bullets?
Is the stabilization calculation not just a math formula?
Bryan Litz made a statement somewhere, I forget where I saw it though. He said that they tend to prefer to have monos at closer to the 2.0 sg rate than 1.5 with lead core bullets. I prefer not to ride the line of an unstable bullet which can lead to other terminal issues, it is pretty well known than a unstable bullet can do unpredictable things upon impact, so I just make sure I either use a bullet that is easily stable in my twist, or overtwist by about .5" if I'm building around a bullet.Where does it say that? Please share a reference. I know that is not as accurate in flat-based bullets. I asked Berger some time ago because I have seen too many unsubstantiated claims, and below is their response.
View attachment 372303
According to Phil's response, yes. Enter the required bullet parameters, and you're GTG.
I have seen posts with the >2.0 SG min recommendation for monos vs. >1.5 SG min for the lead core but none from a ballistician yet. Perhaps, I just missed it.
I vaguely remember that too but I could not remember it. LOL, I have been going 1" faster lately.Bryan Litz made a statement somewhere, I forget where I saw it though. He said that they tend to prefer to have monos at closer to the 2.0 sg rate than 1.5 with lead core bullets. I prefer not to ride the line of an unstable bullet which can lead to other terminal issues, it is pretty well known than a unstable bullet can do unpredictable things upon impact, so I just make sure I either use a bullet that is easily stable in my twist, or overtwist by about .5" if I'm building around a bullet.