hutchey 147 Posted August 11, 2014 Report Share Posted August 11, 2014 Hi, I am trying to not get bogged down in this but curiosity has me looking. Berger bullets web site has some interesting data on stability of bullets which all the other bullet manufacturers don't go into. Eg a 243 with twist of 1:10 doesn't seem to have much at all that BB shows as Stable! Anyone else got any experiences of this sort of thing in practice? Cheers Quote Link to post
SportingShooter 0 Posted August 11, 2014 Report Share Posted August 11, 2014 Is it called "Ballistic Co-Efficient" by any chance? Only thing I can think of. Quote Link to post
Cushty mush 95 Posted August 11, 2014 Report Share Posted August 11, 2014 Chronograph + bullets +istrelok +app = sorted Quote Link to post
Born Hunter 17,763 Posted August 12, 2014 Report Share Posted August 12, 2014 Are you on about optimum twist rates for different bullet weights? Quote Link to post
hutchey 147 Posted August 12, 2014 Author Report Share Posted August 12, 2014 Yeah, going by the manufacturers info doesn't say much. Just wondered why some fair better than others on that calculatio? And why that calculation was invented if not used more extensively Quote Link to post
charlie caller 3,654 Posted August 12, 2014 Report Share Posted August 12, 2014 As a general rule the heavier bullets for calibre will have a better bc than light ones, Sierra do a bc chart for all their bullets too. Quote Link to post
hutchey 147 Posted August 12, 2014 Author Report Share Posted August 12, 2014 i thought that too CC but the berger bullets thing put them really low in efficiency. Quote Link to post
charlie caller 3,654 Posted August 12, 2014 Report Share Posted August 12, 2014 What put the heavier bullets lower? Hmmm never used Berger bullets, but that is generally not the case, certainly is not with Sierra. Quote Link to post
hutchey 147 Posted August 12, 2014 Author Report Share Posted August 12, 2014 its a ballistic tool ??? based on a calculation that works out twist rate versus bullet weight http://www.bergerbullets.com/twist-rate-calculator/ Quote Link to post
walshie 2,804 Posted August 12, 2014 Report Share Posted August 12, 2014 I looked at that site a few days ago. Doesn't seem to make sense. It said practically the opposite of everything I thought about twist vs bullet weight and one example I know for a fact is rubbish. Quote Link to post
hutchey 147 Posted August 12, 2014 Author Report Share Posted August 12, 2014 exactly, leaves me totally confused. guess its back to the try them all against a target and see whats what Quote Link to post
walshie 2,804 Posted August 12, 2014 Report Share Posted August 12, 2014 exactly, leaves me totally confused. guess its back to the try them all against a target and see whats what At least that way you KNOW what works, rather than what some theoretical figures tell you will or won't work. Quote Link to post
hutchey 147 Posted August 12, 2014 Author Report Share Posted August 12, 2014 True indeed my friend. Back to the targets 2 Quote Link to post
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