Alliant 300 MP Power Pro Powder
Every container of Alliant Smokeless Powder is backed by a century of manufacturing experience and the industry’s most stringent quality control procedures. To ensure consistency, the chemical composition, grain shape and size, and overall density are constantly checked and tested in a ballistics lab.
Superior velocity and lot-to-lot uniformity are provided by the Power Pro 300-MP. Power Pro Alliant 300 MP powder is a spherical powder designed for magnum pistol calibers. It has improved velocity and density for easier metering. Because it is designed for specific cartridges and applications, reloaders will be able to create a load that is similar to factory loaded ammunition. 22 Hornet loads are used as secondary loads.
Warnings from the Manufacturer:
- Do not exceed the loads displayed in the reloaders guide.
- Never mix any two powders regardless of type, brand, or source.
- Never substitute any smokeless powder for Black Powder or any Black Powder substitute.
Joe Gordon –
When I first tried this, it was for a 5″ Ruger GP100 357mag. I started low and worked up, and noticed the velocity reached a plateau where an increase in charge gave no increase in velocity. I was getting about the same velocity as other powders (H-110 and N-110) but with no pressure signs. I then decided to try working up loads for my 16″ Rossi 92 and there I saw a linear increase in velocity right up to the max charge. I settled on a load that was slightly less than max, where I saw 1800fps with a 158gn XTP. Accuracy was great, too. A plus is that I can use regular primers, and see absolutely no high pressure signs. I later tried loads in 44mag for both a 20″ rifle and a 10″ Blackhawk revolver, both worked very well. I believe this powder really shines in longer barrels.
James Porter –
I was using Alliant 410 for my skeet loads and ran out of powder. Went to the local supply store and all they had was a 1b and 8lb can of 300MP on the shelf. Alliant lists a skeet load for the 410 using 300MP so I purchased the 1lb can to try out. I have enjoyed using this powder for it burns clean, does not seem to burn the ends of the hulls as much as 410 and I can obtain 6 good reloads out of my hulls. It is a little more expensive to load requiring more grains of powder than 410, however, the reloads it makes are really impressive. I went back to purchase the 8lb container but it was gone. I will purchase some more once supplies start to comeback.