That’s wonderful, William. I hope this Web site evokes others to try and do similar exams. The setup was rather straight-ahead. You only will need regular ammo and a great way to evaluate muzzle velocity, so that the powder is the only real variable. Best of luck to you personally!

Measuring personal effects certainly is intellectually exciting. Understanding individual impact might have a realistic benefit in that far more likely to know diploma of applicability to other rifle-ammo-sight-System techniques.

Since the IMR Enduron powders cover the entire array of Heart fire calibers, it would not be reasonable to simply decide on just one powder for testing.

sixty eight fps for IMR 4451 appears diverse but if the error bar with the rounds analyzed displays A variety of modify that's overlapping for The 2 powders, then it is just sound rather than real distinction.

In truth, from time to time We have now viewed an inversion in the powder temperature – muzzle velocity partnership for a particular lots of powder wherever the muzzle velocity really reduced given that the powder temperature elevated.

I utilize the Strelok application as my ballistic calculator and it has powder temperature enter, but I don’t understand what it’s adjustment variable is or if it may be manually set to the 0.21 fps/File that you just measured. I’ll consider it and see if I'm able to refine the calculations for greater predictions.

I realize that this is important details for initially round hits, nevertheless the situation I'm much more thinking about is: what takes place for those who hearth 6 shots (or maybe more) in fast succession, to stroll your rifle in at a whole new zero length, then chamber a round … it's possible fiddle Along with the scope for a long time … change your bipod … look forward to the wind to die down, then shoot.

It’s worth noting imr enduron powders that In this particular situation Varget is about 2 times as stable as The remainder, who in turn are essentially equal. Just an observation. Thanks once again for an excellent blog site. Christian

This might impacted the centeredness from the team.Once more no mention of magnitude from the result like a functionality of temperature. As to benchresters handloading on working day of meet it trapped in my brain when I examine the write-up but do not know of your supply.

Cal, you may have gone higher than and over and above imr 7977 in stock using this type of weblog. I didn’t understand how to attain out Aside from publishing this. I'm just entering into lengthy selection capturing, I've a Ruger Percision in 308, I would love any information your ready to give on starting out.

Description Additional facts Opinions IMR 7977 (0) Production of IMR Enduron 7977 powder dates again above 200 yrs when the business was at first Started by E.I DuPont. Available for use in lots of reloading applications, the IMR series of powder is trust by reloaders all around the world.

The purpose of this check was to quantify the temperature stability of the 4 powders we’re thinking about. To do this we’re gonna measure the muzzle velocities of load ammo for a wide range of temperatures. Allow me to promptly run with the setup of how the test was performed.

Quite a few achieved shooters put an enormous emphasis on employing a temperature secure powder, but could we as shooters have ignored the value of a temperature steady primer

Would you indicate SD with respect on the group Middle? If that's so which is a person measure of precision. Or would you mean SD with respect to the intention issue?