It appears RD no longer has these seeds. You seem to be correct Jarofunk as Stone Mountain seems very much like Bubbashine. The only difference I have found (so far) is smell...although I' haven't puffed it yet. I grow organic, in soil so maybe that changed it a bit. I'll try and see if I can contact RD (and/or Scott) and let him know what I got.
STONE MOUNTAIN STRAIN INFORMATION
General Information
Type: Indica-dominant hybrid
Genetics: (Bubba Kush x DJ Short’s Blue Moonshine) backcrossed to the Bubba Kush mother
GeographicOrigin: Bubba Kush is thought to be an Afghani/Pakistani variety, while DJ Short’s Blue Moonshine is out of California — this cross was created by Scott of Rare Dankness Seeds, prior to the establishment of that company
Seed Company/Clone: Clone only, very rare
Description: Bred and selected for a very potent, Indica-dominant effect, it appears that the mission was accomplished. This strain really packs a punch and can send the user into sleep rather easily — very relaxing and narcotic in nature. The plant itself is stretchier than the Bubba Kush mom but has tighter buds. Blue-purple is the dominant color once it gets close to harvest… a very dark-colored and resinous plant.
History
Story: Created by Scott of Rare Dankness in an attempt to make an even heavier and more medicinal Indica than the Bubba Kush mother.
Awards: “Most Potent” at the 2010 Best Bud of Boulder cannabis cup
Growing Information
Flowering Time: 65 days
Preferred Growing Medium: Stretches more than the Bubba Kush mother. A long and thorough flush is recommended to bring out an array of fall colors, which normally get overtaken by purple as the plant finishes.
Patient Expectations
Scent: Very strong and musky, reminiscent mostly of the Bubba Kush mother with tinges of hashy sweet fruit
Flavor: Again, strong and musky, with some of the Bubba Kush dark tastes (coffee, chocolate, garlic) and just a slight sweetness that comes out at times
Effects: Overwhelming at times, Stone Mountain is very potent and hits strong with a direct Indica effect almost immediately. A deep, pervading sense of relaxation, strong muscle tension relief, and definite sleep aid properties at higher dosages. Recommended for experienced patients who can handle the potency and desire strong Indica-dominant relief — this one has shown great promise in relieving the side effects of chemotherapy and cancer including loss of appetite, pain, nausea, headaches, and muscle tension.