It will be fascinating to determine if any of The brand new RL powders start finding some recognize and use. RL16,23 and 26 are supposed to be temperature stable.

Wow, Blaine. I could certainly see a modify of level in between loads, however the muzzle velocity happening as temperatures go up is one thing I haven’t viewed. The idea is bending my intellect a bit. Is it possible to inform me a bit more in regards to the specifics of if you saw that?

He enjoys writing and telling his stories, and not only about firearms, but he also writes for a number of travel Web sites.

So I made a decision to take a look at four diverse powders that are suitable For almost all of calibers Employed in prolonged-selection, PRS-style matches:

……”overlooked the importance of a temperature stable primer.” You fellas just blew my brain! Also appealing that Varget did superior at lessen temps. When H4350 was much better in the upper locations.

Looks like I chose correctly. A lot of the men and women over the “6.five Creedmoor” Internet site also use H4350. It’s not generally straightforward to find, even within a metropolitan spot like ‘Vegas with lots of gunshops.

Benchresters do load about the vary and match but with reference to powder prices the are usually not awfully applicable ,most use volumetirc Harrells BR powder evaluate i can be suprised when they demand a lot better than +- 0.

(2) Assuming RocketmanOU is accurate, it is Terrifying to think the sample normal deviation suggests practically nothing with regard to the normal deviation of your population even assuming the likelihood density function of your population is thought.( Even so your observations about SD for ten and 50 shot groups provides comfort and ease.)

The opposite thing is a question: Was the two fps reading through big difference With all the Magnetospeed continually greater for that Labradar? 5 or 6 many years ago, a retired radar engineer who had manufactured a Doppler unit for his own use shared some output from it with me that he’d produced shooting a 40 S&W pistol. Its output was a ongoing velocity vs. time plot rather than velocity vs. distance. It confirmed a thing Harold Vaughn had demonstrated which has a magnetometer rig in his ebook, Rifle Precision Points, about fifteen yrs right before him, and that is that more than the primary few calibers of bullet travel beyond the muzzle, muzzle blast even further accelerates the bullet slightly.

Many thanks for sharing your thoughts, for the reason that I hadn’t even thought of the worth of having a linear marriage. It’s click here an interesting perspective.

The same is correct for LabRadar which is to arrange to the correct or still left from the rifle, Consequently it's at an angle towards the bullet route. I think which the readings with the LabRadar had been a bit lower when compared to the readings with the MagnetoSpeed.

A quick Notice with a remark you produced about H4350 and Varget. The rifle utilized had a 22″ barrel which is why the velocities with Varget ended up larger than that with H4350. Varget has the ideal burn up level for that barrel size. H4350 is healthier with 24-26″ barrel lengths because it is a bit slower and is also in turn a better powder for your for a longer period barrel.

As most reloaders know, you'll find powder weights that make both equally precision and minimal SDEV and also weights that make just one or one other. When ES/SDEV are not consistent, they have a tendency to distort the standard MV measured. Just questioned if this affected the outcome posted.

And perhaps annealing befor resizing could aid a little bit to uniform neck pressure, even on the primary reloading. Maybe overkillt for “standard” match ammo, but for people sort of exams… who nows.