“The B-Series flanged blades sit on the same back-weighted, counterbalanced Heavy Putter platform for a steadier pendulum stroke. Mild toe hang suits a slight-arc stroke. Traditional shaping with a modern weight scheme.”

The Heavy Putter was mechanical engineer Stephen Boccieri's rebellion against 340-gram convention: launched at the 2005 PGA Merchandise Show out of Ridgefield, Connecticut, it paired a head of roughly 475 grams with a 250-gram counterweight under the grip, pushing the balance point about 75% up the shaft so the shoulders — not the hands — drive the stroke. The B-Series was the blade expression of that idea: CNC-milled stainless flanged blades (B1, B1-M matte, B3, B3-M), largely center-shafted and face-balanced, weighing near 900 grams all-in against a conventional putter's ~500. The company renamed itself Boccieri Golf in February 2006 as the putter took off, and the concept earned Golf Digest Hot List recognition three times in four years. Reception was genuinely polarized: TheSandTrap's B3 review praised short-putt stability but found mid-range feel 'surprisingly flimsy' and lag putts chronically short, concluding it could not be recommended — while owner reviews on GolfReview ran 4.7/5 across a dozen B3 write-ups, and GolfWRX threads still turn up self-described Heavy Putter loyalists years after production ended.

Three Golf Digest Hot List honors in four years, a real tour validation — Troy Matteson jumped from 110th to 8th in Nationwide Tour putting stats after switching and won the 2006 Frys.com Open — and long-running polarized GolfWRX threads mark a genuine dent in putter design; resale near $50 shows no collector demand followed it.

For a golfer with handsy, jabby tendencies or short-putt yips who wants the club's mass to enforce a slow, shoulders-led pendulum — it is close to a training aid you can legally game. Players with delicate touch-based lag styles, fast greens, or an attachment to traditional blade feel tended to hate it; the weight is a commitment, not a tweak.

• Stephen Boccieri came from nuclear and petrochemical piping engineering and had earlier developed a shaft flex/torque profiling system used by PGA Tour players before building the Heavy Putter.
• The patented weight system pairs a ~475g milled stainless head with a ~250g grip-end counterweight for roughly 900g total, moving the balance point about 75% higher up the shaft than a conventional putter.
• Troy Matteson climbed from 110th to 8th in Nationwide Tour putting statistics after switching to the putter and won the 2006 Frys.com Open with it — the brand's strongest verified tour result.
• Golf Digest Hot List honors came in 2007, 2009, and 2011 across the brand's line, which company announcements touted as three nods in four years.
• Period retail pricing clusters around $199 rather than a single universal figure, with some builds to $230; retailer listings also show slight variation in quoted head weights across B models.
• Boccieri Golf moved from Connecticut to a 9,000 sq ft Scottsdale, Arizona research and fitting center in 2012; that retail location has since closed and the Heavy Putter line is long out of production.

It arrived nearly a decade before counterbalancing went mainstream — Odyssey's Tank line and the counterbalance wave surrounding the 2013–2016 anchoring ban followed the same physics Boccieri was selling in 2005, just in milder doses. Against mid-2000s rivals like the Scotty Cameron Newport or Odyssey White Hot blades it was a radical outlier, roughly 400 grams heavier all-in.

Cheap to try and worthless to hoard: 2026 resale guides put B-Series blades like the B1-M at roughly $40–55, with private-party eBay and SidelineSwap examples in the same range and graded-retailer trade-in credit running lower still. Buy one to test the heavy-pendulum theory, not as an investment.