This allows as many as 4% much more powder Area in the situation and in many loads yields a lot more velocity than regular 7828. This kind of masses are marked with the asterisk in the info to indicate wherever regular 7828 will not suit. Grain form is extruded (stick)
IMR 7828 SSC is often a magnum rifle powder with the exact same burn up price as common IMR 7828 and makes use of exactly the same info. However, because of the Tremendous brief kernels, metering is almost pretty much as good as a spherical powder.
But excessive compression can bulge the case just under the shoulder since many of the compression takes put in the very first fifty percent-inch underneath the bullet. You may not have the ability to absolutely chamber a bulged circumstance, and it will probably adhere within the chamber if you do. Ball powders (H-450 and AAC-7800) don’t have this problem. If you compress them bit by bit sufficient to allow the balls to realign on their own, the compression will probably be distributed uniformly all over the circumstance.
I contacted Hodgdon about this a few yrs in the past. Their reaction was that it was far more temperature steady than some, although not in the exact same league because the "Severe" powders.
All points being equivalent double foundation powders are effective at higher energies at equal tension and solitary base powders are more likely to give the tightest Excessive distribute numbers.
Earlier testing has proven that this salvaged powder may differ an excessive amount from good deal to good deal to get predictable. With one ton, the stress gradient, the modify in pressure for each transform in quantity of powder, was dangerously high.
For the history, if you obtain each Dober AND Bob telling you a little something is good, then get a bunch of it and don't glance again
Compressing the powder a bit as you seat a bullet received’t damage A great deal. That crunching seem you listen to with extruded powder is just not, to any extent, powder granules getting damaged. Prior screening has demonstrated that, In most cases, the powder granules are just being dented. Whilst broken granules burn off more quickly, and therefore raise the burning velocity, there aren’t enough of them to generate a useful variation.
WARNING: This solution contains substances recognized towards IMR 7828SSC the Point out of California to lead to cancer and delivery defects or other reproductive damage.
Vihtavuori powders Use a status for staying several of the cleanest burning powders accessible. Quite a few aggressive shooters utilize them for that motive, Along with fulfilling their other demands. Another detail Vihtavuori powders are recognized for is their precision.
So I have been playing with 7828SSC in addition to Federal 210 gold medal match primers. Extreme spreads are quite a bit higher than I'd love to see. Which primer(s) have you been men applying with 7828SSC for the best final results? Cartridge is 280 AI.
IMR powders proceed to be produced in the identical plant and Together with the same exacting efficiency requirements as well as top quality assurance criteria that shooters have come to expect.
I’m confident it would work for those weights, but likely a better with 150’s as it is really a slowish powder. I considered it a few years back but went down the vintage H4831SC route very first.
Stress was a gentle fifty five,000 psi. If you’re satisfied with lower than highest imr 7828ssc in stock velocities, this should be your to start with option. We don’t see how you can find into difficulties with it. It’s tough to load possibly too much or as well minor. No trouble with Secondary Explosion Outcome (this phrase is defined in the subsequent part of this text), and no want for the strain transducer. Our Ranking: Inexperienced persons IMR 7828SSC Choice, Superior for experts, way too.