Re: Spindrift Calculation??
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Brown Dog</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowlight</div><div class="ubbcode-body">TF, nobody is saying it doesn't exists, it most certainly does... </div></div>
I think the fellow with the photos is arguing that it doesn't exist
As I said, If your cards don't have it; don't use it.
I stick to my point; naysayers decry it <span style="font-weight: bold">because they don't have the data on their cards</span>.
Let's not lose sight of the fact that the original post was asking how to calculate it - not 'should I shouldn't I?'
and then of course the thread is confused by low bandwidth individuals who keep popping up in with Monty Pythonesque determination screeching 'it doesn't exist, it doesn't exist'.
Speaking of which;
jwp,
I simply can't be arsed to explain this any more; if your level of ballistic understanding is such that you think a tube fired spin stabilised artillery projectile acts under different Laws of Physics to a spin stabilised bullet then you will never be able to conceptualise any of this...your posts here -and on LRH clearly demonstrate your lack of scientific knowledge and inability to argue from any theoretical standpoint other than <span style="font-weight: bold">what you think </span> 'Shawn told me' (which given his level of understanding certainly means you failed to understand his explanations) or 'ring Mr Perry' to find out what you misunderstood from him too? As the maxim goes 'empty vessels make the most noise'.
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I know for a fact that artillery adjust for spin drift. For you to take a personal shot at my intelegence and to say that learning from Mr. Peryy is meaningless shows your total lack of understnding in learning. Everyine learned from someone, inluding you.If real world shooting shows one no need to adjust for spin drift then why do it?
I guess that you also missed this post
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lowlight</div><div class="ubbcode-body"><span style="font-weight: bold">Well I know several years of shooting all different locations I have never shot alongside anyone who used it and they all still managed to hit well. I never noticed one competitor at any of our annual matches use it either, but I could be mistaken.</span>
Also, I still contend it's different for a zeroed rifle compared to a PBZ'd rifle, which I think is were the problem comes into play.
I<span style="font-weight: bold"> know I watched Jeff Badley make a first round hit in West VA on a 1997 yard target with a 7WSM and he didn't use it, George, Myself and Jeff were the top 3 guys using nearly identical dope, no one ever mentioned 3 xtra clicks of anything and we shot past 1000 yards... maybe I'm just a left leaner. </span>
No wind to measure it, well good luck with that.
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From what I have seen from the info that you posted (10+ inhes of spin drift correction for a 30 Cal 155 grain bullet) I would certainly take the word of Shawn and Gerald Perry of Pery Systems over your BS