IMR 4350 is an extruded, medium-slow burning rifle powder sold by Hodgdon as they now own the IMR branding. It is an excellent older powder and has been used for generations to make accurate reloads.
This powder, along with many other legacy powders, still performs very well. While newer alternatives have been released with different benefits, namely temperature stability and better velocity in over-bore cartridges, IMR 4350 performs no worse than it did 50 years ago.
IMR 4350 made its name in being better in 30-06 reloads than the original military powder, IMR 4895. It delivers better velocity in all bullet weights and most reloaders find it more accurate with the heavier 165 and 180-grain bullets.
It can also be used .270 Winchester, most of the popular 6.5mm cartridges and the belted magnums as well.
And to be honest, most shooters don’t need extreme levels of temperature stability, though there is no downside in having it. Remember, factory ammunition is not tuned for hot or cold weather and doesn’t use the most advanced powders available. Still, large and small game are still ethically harvested with it every year.
If you know not to develop loads in the dead of winter or the blistering heat of summer, and this powder gives you excellent results, then use it. IMR 4350 didn’t develop its reputation in a vacuum.
IMR 4350 Powder
This can also be said for a variety of other older, extruded powders, including; IMR 3031, IMR 4895, and IMR 4064. If I were to accompany you to a sporting goods store and every powder imaginable was in stock and available for purchase, these probably wouldn’t be recommending these powders first. However, if you are getting good results with them, or can’t find newer alternatives, give it a try.
What is IMR 4320 smokeless powder used for?
Available for use in many reloading applications, the IMR series of powder is trusted by reloaders all across the globe. IMR 4320 short granulation and easy metering is perfect for the 223 Remington, 22-250 Remington, 250 Savage, and other medium burn rate cartridges.
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