The current update includes some French-American hybrids.
Important Note: Some of the percentages may seem overly precise, which may be a result of simple math. One of my blends was 2/3 Merlot, 1/3 Bordeaux Blend (equal poundage of 4 different grapes). Calculating percentages I came up with 67% Merlot and 8.25% of each of the other 4 grapes. In this case, it's my best guess as to the percentages; I didn't measure out 8.25% of any wine.
Treat the following blends as starting points and use your own taste testing to fine tune the final blend.
Red Grape
Alicante Bouschet
Alicante Bouschet 80%, Zinfandel 10%, Barbera 10% (Tullamore)
Alicante Bouschet 60%, Muscat 40% (tullamore)
Alicante Bouschet 54%, Grenache 50% (distributor)
Alicante Bouschet 50%, Barbera 25%, Petite Sirah 25% (distributor)
Barbera
Barbera 90%, Petite Sirah 10% (tullamore)
Barbera 85%, Petite Sirah 15% (tullamore)
Barbera 81%, Sangiovese 13%, Petite Sirah 6% (Mac60)
Barbera 80%, Sangiovese 15%, Aglianico 5% (CDrew)
Barbera 80%, Sangiovese 15%, Petite Sirah 5% (tullamore)
Barbera 75%, Sangiovese 20%, Petit Verdot 5% (Mac60)
Barbera 60%, Dolcetto 30%, Nebbiolo 10% (tullamore)
Barbera 54%, Grenache 46% (Joe B)
Barbera 40%, Zinfandel 40%, Alicante Bouschet 20% (Clammypollack)
Cabernet Franc
Cabernet Franc 85%, Merlot 5%, Carménère 5%, Alicante Bouschet 5% (Nebbiolo020)
Cabernet Franc 50%, Cabernet Sauvignon 30%, Merlot 20% (McGregor Winery – Rob Roy)
Cabernet Sauvignon
Cabernet Sauvignon 85%, Merlot 10%, Cabernet Franc 4%, Petit Verdot 1% (Mark Ryan Winery - Dead Horse)
Cabernet Sauvignon 80%, Cabernet Franc 10%, Merlot 10% (winemaker81)
Cabernet Sauvignon 80%, Merlot 16%, Petit Verdot 4% (Mac60)
Cabernet Sauvignon 80%, Petit Verdot 12%, Tannat 8% (Mainshipfred)
Cabernet Sauvignon 79%, Cabernet Franc 11%, Merlot 10% (Justin Vineyards – Isosceles)
Cabernet Sauvignon 79%, Merlot 9%, Cabernet Sauvignon 8%, Malbec 2%, Petite Verdot 2% (San Acacia Cellars – Caballo Muerto)
Cabernet Sauvignon 78%, Merlot 8%, Cabernet Franc 8%, Petit Verdot 4%, Malbec 2% (Guasto-IS)
Cabernet Sauvignon 75%, Merlot 25% (distributor)
Cabernet Sauvignon 72%, Merlot 28% (Kitchen)
Cabernet Sauvignon 70%, Merlot 20%, Cabernet Franc 10% (DistanceRunner)
Cabernet Sauvignon 60%, Shiraz 40% (Red Head - Red Sedan)
Cabernet Sauvignon 59%, Merlot 39%, Petit Verdot 2% (Snafflebit)
Cabernet Sauvignon 57%, Petite Sirah 43% (kitchen)
Cabernet Sauvignon 51%, Merlot 26%, Syrah 13%, Sangiovese 10% (NCWC)
Cabernet Sauvignon 50%, Merlot 30%, Syrah 20% (Meadini)
Cabernet Sauvignon 50%, Primitivo 50% (Tenuta - Albrizzi)
Cabernet Sauvignon 25%, Cabernet Franc 25%, Merlot 25%, Sangiovese 25% (Clammypollack)
Carignan
Carignan 50%, Syrah 25%, Mourvèdre 25% (Charles Cros)
Carignan 24%, Zinfandel 25%, Alicante Bouschet 24%, Petite Sirah 25% (distributor)
Carménère
Carménère 50%, Malbec 50% (Chuck E)
Chambourcin
Chambourcin 90%, Merlot 10% (winemaker81)
Grenache
Grenache 76%, Mourvèdre 8%, Petite Sirah 8%, Syrah 8% (winemaker81)
Grenache 70%, Syrah 20%, Carignan 10% (Cabalié)
Grenache 67%, Shiraz 28%, Mourvèdre 5% (Colloca)
Grenache 62.5%, Syrah 37.5%, Mourvèdre 12.5% (winemaker81)
Grenache 50%, Syrah 35%, Carignan 10%, Mourvèdre 5% (Domaine de la Presidente - Cotes du Rhone)
Grenache 50%, Syrah 25%, Merlot 25% (Meadini)
Grenache 40%, Sangiovese 40%, Zinfandel 20% (distributor)
Grenache 25%, Zinfandel 250%, Alicante Bouschet 25%, Muscat 25% (distributor)
Malbec
Malbec 60%, Cabernet Sauvignon 40% (BMarNJ)
Marechal Foch
Marechal Foch 75%, Leon Millot 25% (VinesnBines)
Merlot
Merlot 95%, Cabernet Franc 5% (Tentation de Dalem – Fronsac)
Merlot 78.90%, Barbera 21.2% (StimVino)
Merlot 70%, Cabernet Sauvignon 25%, Grenache 5% (distributor)
Merlot 67%, Cabernet Sauvignon 8.25%, Cabernet Franc 8.25%, Petit Verdot 8.25%, Malbec 8.25% (winemaker81)
Merlot 65%, Cabernet Sauvignon 25%, Cabernet Franc 10% (Chateau Bellevue – Bordeaux)
Merlot 40%, Cabernet Sauvignon 30%, Petit Verdot 20%, Malbec 10%, Cabernet Franc 10% (Jbu50)
Merlot 40%, Zinfandel 40%, Cabernet Sauvignon 5%, Cabernet Franc 5%, Petit Verdot 5%, Malbec 5% (winemaker81)
Montepulciano
Montepulciano 85%, Petit Verdot 15% (StimVino)
Montepulciano 70.5%, Barbera 21.2%, Muscat 8.3% (StimVino)
Montepulciano 60%, Cesanese 40% (Antionio Federici - Roma Rosso)
Nebbiolo
Nebbiolo 90%, Petite Sirah 10% (justsgm)
Nebbiolo 70.5%, Barbera 21.2%, Muscat 8.3% (StimVino)
Petite Sirah
Petite Sirah 74%, Regent 26% (Hazelmere)
Pinot Noir
Pinot Noir 75%, Syrah 25% (StimVino)
Primitivo
Primitivo 60%, Syrah 40% (CDrew)
Primitivo 40%, Sangiovese 25%, Barbera 24%, Dolcetto 8%, Syrah 3% (Brutocao - Quadriga)
Ruby Cabernet
Ruby Cabernet 60%, Carignan 20%, Zinfandel 20% (distributor)
Sangiovese
Sangiovese 85%, Sagrantino 15% (tullamore)
Sangiovese 80%, Merlot 10%, Cabernet Sauvignon 10% (Jusatale)
Sangiovese 75%, Merlot 10%, Cabernet Sauvignon 10%, Alicante Bouschet 5% (justsgm)
Sangiovese 60%, Cabernet Sauvignon 25%, Merlot 15% (Meadini)
Sangiovese 60%, Merlot 20%, Cabernet Sauvignon 15%, Syrah 5% (tullamore)
Sangiovese 60%, Nebbiolo 20%, Alicante Bouschet 20% (mainshipfred)
Sangiovese 50%, Montepulciano 12.5%, Nebbiolo 12.5%, Nero D'avoia 12.5%, Sagrantino 12.5% (winemaker81)
Sangiovese 45%, Cabernet Sauvignon 35%, Merlot 15%, Petite Sirah 5% (Mac60)
Sangiovese 44%, Cabernet Sauvignon 40%, Merlot 10%, Petite Sirah 6% (Mac60)
Sangiovese 42%, Cabernet Sauvignon 21%, Merlot 26%, Syrah 5.5%, Petite Sirah 5.5% (NCWC)
Sangiovese 40%, Cabernet Sauvignon 40%, Merlot 20% (buzi)
Shiraz
Shiraz 80%, Zinfandel 20% (Amandla)
Shiraz 50%, Merlot 50% (CalabrianBlood)
Shiraz 47%, Cabernet Sauvignon 32%, Malbec 21% (Andean Vineyards - Waxed Bat)
Syrah
Syrah 50%, Petite Sirah 50% (distributor)
Syrah 33.3%, Petite Sirah 33.3%, Merlot 33.3% (winemaker81)
Tempranillo
Tempranillo 95%, Graciano 5% (Latitud 42 – Rioja Reserva)
Tempranillo 94%, Mourvèdre 2%, Petite Sirah 2%, Syrah 2% (winemaker81)
Tempranillo 34%, Syrah 33%, Zinfandel 33% (distributor)
Touriga Nacional
Touriga Nacional 35%, Tinta Roriz 25%, Syrah 25%, Alicante Bouschet 15% (Stone & Bones)
Zinfandel
Zinfandel 75%, Alicante Bouschet 25% (Dom1950)
Zinfandel 75%, Petite Sirah 25% (Chuck E)
Zinfandel 75%, Syrah 13%, Petite Sirah 7%, Merlot 5% (Mac60)
Zinfandel 70%, Barbera 30% (BMarNJ)
Zinfandel 50%, Barbera 50% (distributor)
Zinfandel 50%, Merlot 20%, Malbec 20%, Cabernet Sauvignon 10% (Kraffty)
Zinfandel 35%, Carignan 35%, Grenache 15%, Alicante Bouschet 15% (distributor)
White Grape
Chardonnay
Chardonnay 70%, French Colombard 20%, Viognier 10% (distributor)
Chardonnay 50%, Pinot Noir (white) 40%, Viognier 10% (BarrelMonkey)
Chenin Blanc
Chenin Blanc 67.70%, Sauvignon Blanc 33.3% (Kitchen)
Chenin Blanc 50%, French Colombard 50% (distributor)
Fernão Pires
Fernão Pires 70%, Branco Arinto 30% (El Campeon)
Gewurztraminer
Gewurztraminer 50%, Piesporter 50% (ratflinger)
Muscato
Muscato 78%, Alicante Bouschet 22% (Guasto-IS)
Pinot Grigio
Pinot Grigio 34%, Muscat Canelli 33%, French Colombard 33% (distributor)
Sauvignon Blanc
Sauvignon Blanc 50%, Chenin Blanc 40%, Malvasia 10% (distributor)
Semillion
Semillion 70%, Muscadelle 15%, Sauvignon Blanc 15% (Chateau Belingard – Reserve Monbazillac)