A buddy of mine dropped $80 on a "full tune" before elk season last year. New strings, new rest, the works. The kid behind the counter shot one arrow through paper, got a bullet hole, handed it back and said "you're dialed." My buddy believed him. Why wouldn't he? Bullet hole through paper, that's tuned, right?
Then he couldn't keep a broadhead on the target past 50 yards. Field points stacked. Broadheads flew like he was throwing them. He thought he had a form problem. He didn't. He had a bad tune that looked like a good one.
Most shop tunes aren't tunes. They're a paper test and a vibe check. And a clean paper tear at 6 feet hides more than it reveals.
The bullet-hole trap
Here's the thing nobody at the counter tells you: a bow can punch a perfect bullet hole through paper and still be out of tune. Paper at 6 feet only sees the arrow in the first fraction of its flight. The fletching hasn't even started steering yet. You can mask a rest that's off, a nock point that's high, a cam that's out of time — all of it — if your form is consistent enough to throw a clean hole for that one shot.
That's why paper is the last check, not the only one. A real tune confirms the bullet hole, then goes and proves it downrange where the fletching has actually done its job. If your shop's whole tune was one piece of paper, you didn't get tuned. You got a magic trick.
The tell: ask the guy what your bareshafts did. If he didn't shoot bareshafts, he doesn't actually know where your arrow is going. He guessed.
The five-minute things they skip
Cam timing is the big one. On a dual-cam bow, if the cams don't hit the stops together, your nock travel is garbage and no amount of rest adjustment fixes it. It takes 30 seconds to eyeball on a draw board and most shops won't put your bow on one unless you ask. If your bow groups clean at 20 and blows up at 40, that's almost never your form. That's cam timing, and the shop should have caught it before they ever touched the paper.
Center shot is another. The factory spec is a starting point, not an answer. I've seen bows come back from a "tune" with the rest sitting exactly where the manual says it should be — 13/16" off the riser — like that number is gospel for every shooter. It isn't. Your center shot is where your bareshafts say it is, and that's a couple of mils either way depending on your grip and your release.
Then there's the d-loop. A loop that's 1/16" too long or tied with the nock point a hair high will open your groups and you'll blame everything else first. Most shops tie it by feel and move on.
How to actually check their work
You don't need a draw board in your garage to audit a tune. You need a target, your broadheads, and about twenty minutes.
Shoot a fletched arrow and a bareshaft of the same spine at 20 yards. Then back up to 30, then 40. If the bareshaft tracks with the fletched arrow the whole way — same point of impact, no drift — your shop did the job. If the bareshaft drifts right, your arrow's reading weak and your rest or your point weight is off. Drifts left, it's stiff. That's the test the shop should have run and probably didn't.
Then the real-world one: screw in a broadhead and shoot it next to a field point at 40. They should land together. A broadhead exposes a marginal tune like nothing else because that fixed blade up front turns every little bit of arrow paradox into steering input. Field points forgive. Broadheads tattle. If your broadheads and field points don't live in the same group at 40, your bow is not tuned, no matter what the paper said.
This is exactly the gap my buddy fell into. His paper looked perfect. His broadheads were three feet off at 50 because his cam was out of time and the shop never checked. Twenty minutes of bareshaft work would have caught it. Instead he found out on a Colorado hillside with a bull at 47 yards.
What a real tune costs you to verify
I'm not saying never use a pro shop. Good ones exist and a sharp tuner is worth every dollar. I'm saying don't outsource your trust. The shop hands you a bow; you go prove it downrange before you believe it. A tune isn't a receipt. It's a result, and the result lives at 40 yards with a broadhead, not at 6 feet on a piece of paper.
If you want to know what your bareshaft should be doing before you ever pull it out of the quiver — what spine you're actually shooting, how your point weight is loading the shaft, where your tune should land — run your setup through the spine and tuning tools in The Forge first. Walk into the shop knowing your own numbers. Then you'll know in twenty minutes whether the tune they sold you is real.