If 10' from your muzzle is working for yourself - go with it. If you start observing velocities, ES, and SD quantities not really uniform I have discovered on some calibers where by ten' just is just not enough distance given that the muzzle blast was performing some Unusual points Along with the velocities.
You could possibly attempt sixty three grains of Retumbo Along with the 168 Hunting VLD Nosler brass and possibly a WLR or Mag. primer is determined by the temp in which you'll be searching in ? That should get you really darn near to what you need out from the 280 AI.
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I do not know why I received the pressure signs, but I've finished some exploration and located this appears to be at times the case a lot more with "mid length" cartridges. I see even On this thread Yet another .257 bob concern and have study of Other people with 7x57 and 6mm Rem also.
The kernels have been shortened to boost metering and required things ended up included to make it insensitive to scorching or chilly temperatures.
As an Intense extruded propellant, it shares the high-quality good quality of insensitivity to cold and warm temperatures, and also excellent uniformity from good deal to great deal.
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Not expressing that powders is just not likely cranky in it, just that when You begin off with a notorious situation; probably not the powders fault.
I've operate the loading sequence by way of my mind quite a few times, And that i haven't any superior clarification. 150grNBT
- At what distance before hybrid 100v the muzzle will you be setting your chrony, and are you presently backing that distance out with a ballistic calculator to catch up with to the accurate muzzle velocity?
Did a little something equivalent recently. Worked up the load obtained to excellent accuracy. Went to lunch. Came back again loaded a handful of a lot more to double Check out the precision. The second a person did not sound correct And that i bought somewhat blow again. Needed to conquer open up the bolt and the brass was nonetheless fused nto the tip on the bolt.
My present load is quickly hybrid 100v powder and exact even so the bolt carry continues to be much more than what i want and will most likely back down One more fifty percent grain and take a look at.
H4350 is definitely an extruded propellant inside our hybrid 100v Excessive sequence that has been amongst our most favored powders with shooters for decades. All through that point, Hodgdon has modernized H4350 by shortening the grains for enhanced metering and making it insensitive to cold and hot temperatures.