Wound’t magnetospeed readings be usually a little bit highter, as it measures the relative speed concerning exiting bullet and recoiling rifle, and never the relative speed amongst bullet and “earth”?
I’ve seen several shooters go with a load making use of one of many Alliant Reloader powders, simply because it gave them the very best muzzle velocity. But, quite a few have discovered those powders being very sensitive to temperature. It’s unlucky when you see a shooter in a match that appears to be hammering targets useless Heart early in the morning, but as the day heats up they start missing A lot more targets.
That’s a fascinating stage, Steve. I haven’t at any time listened to somebody point out that right before. I don’t assert to become a professional in metallurgy, so that can undoubtedly be the situation. And that i conveniently admit that Like every test, this wasn’t perfect. I listened to a knowledge analyst say a single time “
The self funding of Cal’s research and Trump’s candidacy seem to both of those be coming to their boundaries. Cal has supplied us tremendously from his life’s most treasured asset…his time.
Teams weren't recorded as I was trying to obtain the shots off as my timer went off quickly so that a “scorching chamber” or “this, that, and another” did not mess up the outcome. Thanks, Patrick
I assumed it absolutely was a fantastic short article. They went to some fantastic duration (like leasing a freezer truck) to test to receive it ideal. Which makes it a lot more frustrating which the IMR 7977 posting is lacking the charts and images. It looks like someone duplicate-and-pasted it in from One more source and the images weren’t provided.
For the close-person, according to his/her sought after accuracy in a given length or in excess of a presented variety of distances, these variations of precision and precision with temperature might or might not be related.
Cal Zant is the shooter/creator powering PrecisionRifleBlog.com. Cal is usually a existence-extensive learner, and likes to assist Other folks go into this Activity he is so passionate about.
That is just what exactly we have been looking to do listed here, and I couldn’t concur far more. I do surprise how Individuals more recent powders would do, but I guess I’m skeptical in Alliant’s quality at this point. But, it’d be fascinating to check out the information!
They suggest you location the Doppler beside the rifle, and imr 7977 in stock it looks as if they could account for that offset because they interpret the final results and correct for it. The middle from the system is often a lot less than twelve″ with the barrel, which isn’t A great deal after you’re discussing measurements taken 50-eighty yards down vary.
DuPont utilized to make a ton of powder during the US, and operated like forty some amenities at one particular time, However they had imr enduron powders been broken up after the government shut them down as a result of anti-have confidence in guidelines to halt the monopoly that they had. Hercules took over some of their factories, and IMR (Beforehand owned and commenced by DuPont) operated stand on your own for your little bit right before increasing into copyright.
That’s why I under no circumstances did a write-up over it. Really to achieve any universal real truth you’d need to have to test over many lots of Just about every primer and I just don’t contain the time to do this. It’s be One more intriguing experiment!
I shot The entire string of cold at once. The many hot. All the ambient. I waited 10 minutes among the strings. I had the timer set on my telephone so it absolutely was quite precise in my view
Len Levi: I've experienced for a long time your Lee traditional Solid breech lock push #90998.I've generally experienced truble with...