RE: Alliant Pro 4000 MR in 300 Win Mag, 7 mm Mag??? Anyone Tried It?

[Veteran]

Seems like Alliant has a new magnum rifle powder out called Pro 4000 MR. I assume its newer but maybe some of you have used it.

It seems like it may be a small ball spherical not unlike and similar to Ramshot Magnum and Accurate Magpro. Does anyone have any experience with it in 300 Win Mag or 7 mm Mag? Is it gonna be temperature sensitive? Seems like I read only the longer stick extruded powders are better at being insensitive in temperature changes.

What do you think if you have tried it?

 

[jebel]

Power Pro 4000MR has been around for a few years. I tried it in a 7RM with 150gr bullet and it did fine. I did not test it for temperature sensitivity and I do not think any claims are made in that regard.

 

[venatic]

I too have used it for several years and it's a solid choice for 300 and 7mag especially with mid range weight bullets for those calibers.
It's also a stellar powder for top end velocity in the 6.5 Creedmoor with the heavier bullets. It's not too temperature sensitive and I did test it a few years back.