If they are really 3 grains with one size and two with a large core you should put the ones with the larger core at the nozzle end. The three smaller cores would be on top.
-Rob
My 75mm AMW M-1350 grains were not numbered and the instructions say
> the order is important when stacking them in the liner.
>
> 3 have a smaller (and equal) diameter core and 2 have a larger (and
> equal) diameter core.
>
> What would be the correct way to stack these grains?
>
> Thanks!
>
> Jim