ashcroft Posted June 7, 2020 Report Share Posted June 7, 2020 I was fortunate to attend a day's shooting with Richard Utting last year and he talked about the above using Strelok pro data to produce figures for my rifle to consider heavier bullet options For the life of me I can't remember what figure i should be using. I recall above 1.5 been a minimum but thought there was a higher number to stay under also Can anyone in the know offer advice? Quote Link to comment Share on other sites More sharing options...
Popsbengo Posted June 7, 2020 Report Share Posted June 7, 2020 https://bergerbullets.com/the-state-of-the-art-in-rifle-bullet-stability/ This should explain everything and their calculator is excellent Quote Link to comment Share on other sites More sharing options...
Akeld Posted June 7, 2020 Report Share Posted June 7, 2020 https://arxiv.org/ftp/arxiv/papers/1410/1410.5340.pdf Quote Link to comment Share on other sites More sharing options...
ashcroft Posted June 7, 2020 Author Report Share Posted June 7, 2020 Thanks chaps, so basically reading those it is to stay between 1.5 and 2 with theor being no indication If anyone is better as long as in that banding. Thanks Quote Link to comment Share on other sites More sharing options...
Popsbengo Posted June 7, 2020 Report Share Posted June 7, 2020 over 2 is ok (but not optimum) as long as the bullet can withstand the forces Quote Link to comment Share on other sites More sharing options...
VarmLR Posted June 9, 2020 Report Share Posted June 9, 2020 Litz's Appied Ballistics for LR shooters has a very useful and comprehensive table of gyroscopic stability factors in the tables within the book. It lists advocates anything 1.4 and above is good. Above 2 with some bullets you can run into problems with jackets coming apart in the barrel depending on bullet construction, so as pops says it'll depend on the bullet. Quote Link to comment Share on other sites More sharing options...
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