I got some 12x75 mm rubber stoppered Vaccutainer tubes from Allied Shooters , a site sponsor, some time back. Wanted to get more ,but have trouble contacting him. These are perfect size for ppc and BR rounds.....not too full so as to spill powder when twisting off the stopper.
Been searching E-bay, without luck....seems the glass vials have been replaced by plastic. I don't think Vaccutainer catalogs this item anymore.
Plastic has a tendency to attract static, leaving kernels clingling to tube....NFG.