Bryan particularly cited Hodgdon Intense Series powders as on the list of minimum temperature delicate powders he’d made use of. He also designed it very clear that no powder is completely insensitive to temperature.
I’ve witnessed quite a few shooters opt for a load employing one of several Alliant Reloader powders, simply because it gave them the very best muzzle velocity. But, a lot of have discovered Individuals powders to get very delicate to temperature. It’s regrettable once you see a shooter at a match that is apparently hammering targets dead center early each morning, but since the working day heats up they start missing Increasingly more targets.
Sorry I did not indicate to imply there is one thing Erroneous with IMR 7977. I am only stating be cautious identifying a setting up load for it and don't base your starting load on H1000.
White Hots are cleanse burning, so cleaning concerning pictures is not really expected. Right after capturing, a soaked patch gets rid of nearly all residue and doesn't have any rotten egg smell or residual scent.
If we might have incorporated powders like Alliant Reloader and Many others, which are notorious for giant swings with temperature … you should see much larger figures on this graph. We didn’t contain These, simply because Actually … we’re only Individually thinking about employing powders which might be temperature stable.
It’s appealing that at every match I’ve been too, I’ve never ever heard about any individual using Winchester primers. (Take note: Hodgdon and IMR look like sister companies of Winchester Powders, to make sure that might have motivated their choice.)
Yeah, Rick it seems like we expect a good deal alike! I do shoot at temperatures which might be distinct than I zeroed, although I Test my zero rather frequently … so I assume that limitations that to some extent. I typically shoot at fifty five-ninety five degrees imr 7977 in stock ninety% of some time, but when I’m searching that would be as little as 10 levels or in a summer season-time match, I would shoot in temps as substantial as 105.
IMR not too long ago produced a fresh line of powders “with Enduron Technological innovation,” that is also marketed to own “Extraordinary temperature security.” … Seems common! These new powders should really compete specifically Along with the Hodgdon Extraordinary Sequence, which gives shooters additional powder alternatives to take into consideration.
I have an interestng BDC turret wrap design imr 7977 in stock and style from my scandinavian friends and it spans from -twenty to +twenty for Lapua military services sniper ammo any variation is staggering after you get past 500m or so.m
Interesting points … but I’m acquiring velocities of 2840 fps with a hundred thirty Hybrids utilizing H4350 in my 22″ 6.five Creedmoor. You will discover Totally no indications of tension. I’m not the man who pushes to acquire eek out that last little bit of muzzle velocity by using a “incredibly hot” load. That appears to not align with the theory, but there are so many factors that play into it (together with the individual barrel features) that it’d be difficult to attract conclusions from modest sample sizes.
Description Additional information and facts Reviews (0) Production of IMR Enduron 7977 powder dates back again more than two hundred yrs when the organization was at first Started by E.I DuPont. Available for use in many reloading programs, the IMR number of powder is believe in by reloaders all around the world.
Effectively, Mike. It’s most likely not as big of the deal as you believe. Think about the velocity variances inside the chart I posted in the opinions. That male chopped a barrel down a person inch at any given time, and recorded muzzle velocities. Recognize that a imr enduron powders 22″ barrel was just fourteen fps slower than a 27″ barrel.
That huge of a extend of 7mm Remington Magnum circumstances on the initial firing has more than likely excessively stretched the scenarios at the world wide web and ruined them.
Thanks for the reference. Demanded reading. A paradigm changer. I would've added two more conclusions and restate one summary”