N135 question

[Wellington]

I have 3 kg of N135 in 3 containers, all different lots. One of the bottles has Premium written on it, is this the exact same product. I would like to mix them all together and then divvy them up again.

 

[Laurie]

Yes. Viht changes its labels' appearances pretty regularly these days. There was a year or two where it became 'Premium', but has now changed again. Viht powders change usually little over time and you rarely if ever have to retune loads with most cartridges. I have N165 covering around 16 years worth of lots and simply use them in oldest to newest orders in my 284 Win. (I have seen short-range BR PPC shooters occasionally post 'wanteds' for a particular lot though. This is the current appearance that replaced 'Premium'

 

[Zero333]

I can only speak about Vihtavouri powers for 9mm Luger I've been loading for many years, and I've never had to adjust my load no matter how many times they changed the label !
I use N-320 and N-330. Give good fill ratio for a pistol cartridge and they dispense very consistently/accurately through my Dillon XL-650 powder drop... considering they are stick extruded powders, I was amazed how precisely they dropped from the dispenser.