As I are aware of it, H4350 and Varget are literally made by an Australian company. They are bought beneath a special identify there (I do think AR2209 and AR2208), but I’m undecided whenever they’re a hundred% similar.

IMR 7828 SSC is actually a magnum rifle powder with the exact same burn level as regular IMR 7828 and utilizes the same facts. Even so, a result of the Tremendous short kernels, metering is pretty much nearly as good for a spherical powder.

Most likely major question is how many pictures to acquire fantastic data. Creating the 100yd precision is yet another make any difference. Standard wisdom says when Use a specific group centering This is a piece of cake. I am not so selected but may just be my ignorance. A detailed description of your methodology to establish 100yd precision with images can be a boon to me. 2nd ideal might be your suggestion of references. Several, a lot of thanks for the effort and time to carry out the experiments and touch upon my and various posts.

In reality, I even shoot very long array and have the LabRadar set up beside me. That’s especially valuable if you’re truing ballistics, simply because you determine what the precise muzzle velocity was for that bullet and drop. When you've got a extremely great rangefinder, you are able to do a really very good drop take a look at (at least nearly as good as possible for your fall test). Bryan Litz has talked about he’s also been very impressed with it, While he hasn’t posted any take a look at effects however.

(2) Assuming RocketmanOU is proper, it is Frightening to think the sample typical deviation claims practically nothing about the typical deviation on the population even assuming the likelihood density purpose from the populace is understood.( Nonetheless your observations about SD for ten and fifty shot groups brings consolation.)

And it truly is difficult to find. Extremely difficult to find. I essentially went on Gunbroker.com in advance of I posted this to try to find out if there was any obtainable, simply because I figured this submit could exasperate the challenge a lot more.

Vaughn. I guess you could potentially master a lot from the dude like that. That is definitely an interesting idea regarding the imr enduron powders article-muzzle acceleration, but it looks as if These guys might have corrected for that inside the application. Following time I see them, I’ll certainly inquire! You’ve received me thinking!

It’s well worth noting that Within this state of affairs Varget is about twice as stable as The remainder, who subsequently are basically equal. Just an observation. Thanks once again for a terrific blog site. Christian

It really tracks the bullet out to about 80 yards, having a lot of velocity readings along the way. The muzzle velocities collected proved to be quite related among the two products, which gave me lots of self-confidence in the data. Both of those of these gadgets seem to be way more correct and trusted than regular mild-based mostly chronographs. But to test to mitigate any prospective measurement errors, we averaged the velocities gathered for every shot from both equally units.

Try to remember these have been imr 7977 in stock all for the 22” barrel on our take a look at rifle, plus your mileage could differ. We also just picked Harmless loads for every powder, and didn’t do load progress to determine what velocities for every powder will be at max pressures.

Cal, I deeply appreciate the do the job that you choose to do. imr 7977 in stock I planned to weigh in within the LabRadar and MagnetoSpeed discussion. In terms of accuracy I'd personally imagine that the MagnetoSpeed is the more exact measure of the Velocity from the bullet mainly because it exits the barrel.

It's going to be intriguing to discover if any of The brand new RL powders commence acquiring some discover and use. RL16,23 and 26 are supposed to be temperature secure.

When we headed on the range for any exam, we randomly picked 20 rounds in Just about every caliber from the inventory. We chronographed the velocities having a Caldwell Ballistic High quality chronograph applying their Android cellular phone app.

Thank you, Sir. Following the direct of those people who are far more skilled than me has compensated off. I use H4350 completely and I need all the help I could get.