Compound Discs

Tunnel Shot

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Putt & Approach
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The Tunnel Shot is a putt and approach disc rated 2/4/-1/1. A single point of turn against a single point of fade suggests a slow, neutral putter flight that drifts a touch right and settles softly, the shape its name promises for tight, straight lines. It is not the mold for a hard left finish.

It was the second certification for Compound Discs, the small Georgia brand whose five certified molds, in the PDGA record as of the 2026 export, are all putt and approach discs: the PDGA approved it on 8 April 2024, three weeks after the Barb. No brand site or shop copy for it surfaced in the sources traced for this page as of August 2026.

TryDiscs holds no plastics rows for it yet as of August 2026.

Flight

Source: Compound Discs

Arm speed

NoviceIntermediatePro
SpeedHow hard the disc must be thrown to fly as designed. Putters are 1 to 3, the fastest drivers 14 and up.
2
GlideHow long the disc stays in the air. More glide means more distance from the same throw.
4
TurnHow much it drifts right early in flight (right-handed backhand). More negative, more drift.
-1
FadeHow hard it hooks left as it slows down (right-handed backhand). Higher, stronger hook.
1
StabilityTurn plus fade. Negative drifts right and is easier for beginners. Positive finishes left.Turn + Fade
0

Dimensions

Source: PDGA
DiameterHow wide the disc is, edge to edge. Almost every disc is 21 to 22 cm.
21.1 cm
HeightHow tall the disc is lying flat. Putters are usually the tallest.
1.7 cm
Rim DepthHow deep the rim is underneath, where your fingers grip. Putters have the deepest rims.
1.1 cm
Rim ThicknessHow wide the rim is. Wider rims make faster discs that need a stronger throw.
0.9 cm
Rim Inside DiameterThe width of the flat middle, inside the rim. Bigger usually means a slower, easier disc.
19.4 cm
Rim Depth/Diameter RatioRim depth as a share of the disc's width. Higher means a deeper rim for its size.
5.2%
Rim ConfigurationA PDGA score for the shape of the edge. Low is sharp, like a driver. High is rounded, like a putter.
68.25
BeadA small ridge under the edge of the rim, mostly on putters. It changes how the disc feels in hand.
No

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