As I comprehend it, H4350 and Varget are literally created by an Australian business. They may be bought underneath a different identify there (I think AR2209 and AR2208), but I’m unsure should they’re a hundred% identical.
I then applied the Prometheus Gen II Powder Scale to toss all charges. I've checked the Prometheus various moments on the substantial-conclusion Sartorius analytical scale, and each time it confirms what I currently know: the Prometheus is exact down to an individual kernel of powder! The Prometheus isn’t cheap (starts off all-around $three,800), but if you reload up to I do, it may possibly help save lots of time, and will allow me to go to the selection as opposed to sitting down all around loading all day long.
For prolonged-range function, all that actually matters is if our bullet impacts the focus on downrange. Precision and velocity impact that, but so do many other things! So this text is just like the grand finale and ranks which ammo offers us the ideal odds of connecting with long-vary targets.
To view how nicely the Enduron Technological know-how decreased buildup of copper fouling while in the bore, I looked inside the bore in advance of and just after taking pictures IMR-4955. The barrel was totally soaked and cleaned with Gunslick’s Foaming Bore Cleaner right up until a Lyman Borecam Electronic Borescope showed it had been entirely free of copper fouling. Visuals with the cleanse bore were taken at eight, 13 and 19 inches in from your muzzle. Following firing 25 cartridges loaded with IMR-4955, I mopped out the bore with citrus cleaner to remove powder fouling and once more took pictures at the identical 3 intervals.
In reality, on occasion We have now noticed an inversion with the powder temperature – muzzle velocity relationship for a specific wide range of powder where by the muzzle velocity truly diminished given that the powder temperature elevated.
Just one assumed. The jump from ambient to hot is exactly where powders definitely vary. Retaining ones ammunition out of the Sunshine is pretty clear-cut. The chilly to ambient can be much more (but not entirely) agent of keeping ones ammunition in the bag in excess of the cause of each day.
That is an excellent issue. Some months in the past, I shot a hundred rounds IMR 7977 by way of three chronographs: the LabRadar, MagnetoSpeed, and Oehler 35p. I meant to create a publish about that, but just under no circumstances have. So I’ll attempt to give A fast synopsis. The LabRadar and MagnetoSpeed tracked very in the same way. They weren’t off by much more than a few ft per next on Anyone studying. The LabRadar picked up all around ninety five% with the shots, whilst the Magneto Pace picked up one hundred% on the shots. Taking pictures in the Oehler may have impacted the LabRadar’s capacity to monitor the bullet, so should you didn’t have that before it You may have received all one hundred shots. Even though the Oehler 35p was my go-to chronograph and viewed as the gold standard For many years … it wasn’t wonderful as compared to the other two.
IMR not too long ago unveiled a fresh line of powders “with Enduron Engineering,” which can be also promoted to own “Intense temperature balance.” … Sounds familiar! These new powders need to contend specifically Using the Hodgdon Extreme Series, which supplies shooters much more powder possibilities to consider.
But, the LabRadar is two times as high-priced (close to $600 final I saw), so it just depends on what income indicates for you. For those who have The cash, I’d advise the LabRadar. Even so the MagnetoSpeed is really a killer price. I’m certain no chronograph on the market can give the value the MagnetoSpeed does for the value.
Exciting factors … but I’m receiving velocities of 2840 fps with 130 Hybrids using H4350 IMR 7977 in my 22″ 6.5 Creedmoor. You can find Definitely no indications of pressure. I’m not the dude who pushes to obtain eek out that very last little bit of muzzle velocity with a “sizzling” load. That appears to not align with the theory, but there are numerous things that imr enduron powders Perform into it (like the person barrel attributes) that it’d be difficult to draw conclusions from modest sample measurements.
Cal, I deeply enjoy the operate which you do. I planned to weigh in on the LabRadar and MagnetoSpeed conversation. So far as accuracy I'd personally believe that the MagnetoSpeed is the more exact measure of the Velocity of your bullet because it exits the barrel.
It’s even worse When the temperature will get genuinely very hot, because the guys who formulated a “warm” load with a temperature delicate powder will start out blowing primers … or worse. If they were being currently near max force whenever they created the load, then any boost in temperature can become a harmful problem.
The principle capabilities in the Enduron sequence are copper fouling eliminator, insensitivity to temperature modifications, ideal loading density and getting eco-friendly.
7mm Rem Mag is a Very fashionable looking cartridge, and for good motives! Using this type of cartridge you receive more velocity when compared with three hundred Win Mag, and less recoil at the same time.