ALLIANT POWDER(Unique) vs IMR 4064 POWDER

[84mmcarl-gustav]

Hi,you know sometime is not easy to find the right powder all the time,so i want try different mixe.
Am shooting a lee enfield,303 brith cast bullet,i got this mixe load from a book..
Lyman bullet 200gr+Unique 10.5gr.I cannot find this type,so
i check the burn rate,and the closes one(store in my location) IS IMR SR4756 AND SR7625.
and what they said about those powder is for 12, 16, 20 and 28 gauge loads,handgun,
I use IMR 4064 36GR .5GR dacron filler bullet 190gr (for rifle)
what difference if i use UNIQUE 10.5 gr compare to IMR 4064 36gr
Thank for your info

Carl

 

[Ganderite]

The 4064 would be a powder for higher velocity. The Unique is a medium speed pistol powder. It makes nice lower velocity cast bullet rifle ammo.

Unique, 4756 and 7625 are all very similar pistol powders that make very nice and quite accurate cast rifle ammo.

4064 is excellent for jacketed ammo in your 303 and can be laoded mild for cast bulllets, but a faster rifle powder (like 4198) or a mid-speed pistol powder is usually better.

But if you don't have any pistol powder, 4064 will work well with heavy cast bullets.


Unique and 4756 are flake powders that do not meter well in some powder throwers. IMR7625 meters very well and is an excellent all-purpose pistol power andcast bullet rfle powder.

 

[84mmcarl-gustav]

Hi,thank a lot that help,now i have to make my choice