Best Arrow Setup for the Bowtech Proven 34 (2025)
Short answer: a 300–340 spine shaft cut to 29" back-of-point, a 100 gr point and a 16 gr insert — about 410.3 gr finished at 12.3% FOC, leaving the Bowtech Proven 34 near 291 fps. That is at 28" of draw and 70 lb. Six draw-length and draw-weight combinations are tabulated below, all of them inside Bowtech’s published range.
The Proven 34 is two bows wearing one name, and if you skip that fact you will buy the wrong arrows. Bowtech ships it with a Med cam or a Long cam, and they have different brace heights, different speed ratings and different draw-length ranges.
The recommended starting build
Every number below came out of the same engine that runs The Forge, at 28" of draw and 70 lb — the middle of this bow's published range. Nothing here is typed by hand.
- Shaft: Easton Axis 4mm Long Range, 300 spine, 9.3 gpi (.166 inside diameter; .229–.244" outside — archers shop by ID, so that is the one listed first)
- Cut length: 29" — draw length plus one inch, measured back-of-point, the Easton BOP convention
- Point: Field Point 100 gr
- Insert: Easton Axis 4mm HIT Insert, 16 gr
- Nock: Easton Axis Nock 4mm (.166), 5 gr
- Fletching: 3 × AAE Hybrid 23, 5.7 gr each, 3° offset
- Adhesive: 1.5 gr insert epoxy + 1 gr fletch glue — counted, because your scale counts it
- Total weight: 410.3 gr
- FOC: 12.3% — inside the Recommended Hunter Range (11–15%)
- Launch speed: 291 fps real-world (291 fps rated)
- Kinetic energy: 77 ft‑lb · momentum: 0.53 slug‑fps
- At 40 yards: 275 fps, 69 ft‑lb retained, 34.2" of drop
The spine is charted. The mass, FOC, speed, energy, momentum and drop are derived. See the note under the next table for what that distinction costs you.
Spine and build at three draw lengths
Three draw lengths inside the Bowtech-published 25"–30" range, at two draw weights, all on the same reference shaft. Arrow length is draw length plus one inch, measured back-of-point, which is the convention the Easton chart's length axis uses.
| Draw length | Draw weight | Arrow length | Effective draw weight | Spine window | Total weight | FOC | Speed: rated / real-world (fps) | KE (ft‑lb) | Momentum (slug‑fps) | 40 yd drop |
|---|---|---|---|---|---|---|---|---|---|---|
| 26" | 60 lb | 27" | 56.5 lb | 340–400 | 364.7 gr | 13.9% | 270 / 270 | 59 | 0.437 | 39.9" |
| 26" | 70 lb | 27" | 66.5 lb | 300–340 | 391.7 gr | 12.9% | 278 / 278 | 67.5 | 0.484 | 37.4" |
| 28" | 60 lb | 29" | 63.5 lb | 340–400 | 381.3 gr | 13.2% | 283 / 283 | 67.8 | 0.479 | 36.2" |
| 28" | 70 lb | 29" | 73.5 lb | 300–340 | 410.3 gr | 12.3% | 291 / 291 | 77 | 0.53 | 34.2" |
| 30" | 60 lb | 31" | 70.5 lb | 300–340 | 428.9 gr | 11.7% | 283 / 283 | 76.2 | 0.539 | 36.1" |
| 30" | 70 lb | 31" | 80.5 lb | 250–300 | 444.4 gr | 11.3% | 296 / 296 | 86.7 | 0.585 | 32.8" |
Charted versus derived, plainly. The spine window is charted: it comes
out of recommendSpineFromInputs, which reproduces Easton's published hunting selection
chart to 98% and Victory's to 89%. Effective draw weight is that chart's own intermediate
term. Everything else — total weight, FOC, speed, kinetic energy, momentum, drop — is
derived from the component sheet and a ballistics model, and derived numbers carry more error than
charted ones. Drop is computed for an arrow released level with no sight elevation, which is a
comparison figure between rows, not a hold-over.
What changes if you go heavier or lighter
One variable, four points, at 28" of draw and 70 lb on the same 300 shaft. Point weight is the lever most people reach for, so it is the one worth seeing whole.
| Point | Total weight | FOC | Effective draw weight | Spine window | Speed (fps) | KE (ft‑lb) | Momentum | 40 yd drop |
|---|---|---|---|---|---|---|---|---|
| 85 gr | 395.3 gr | 10.8% | 71.7 lb | 300–340 | 297 | 77.4 | 0.521 | 32.8" |
| 100 gr | 410.3 gr | 12.3% | 73.5 lb | 300–340 | 291 | 77 | 0.53 | 34.2" |
| 125 gr | 435.3 gr | 14.6% | 76.5 lb | 250–300 | 280 | 75.9 | 0.542 | 36.8" |
| 150 gr | 460.3 gr | 16.6% | 79.5 lb | 250–300 | 270 | 74.3 | 0.551 | 39.7" |
Read the columns against each other and the trade is obvious. Going from 85 gr to 150 gr moves FOC from 10.8% to 16.6%, costs 27 fps and 3.1 ft‑lb of kinetic energy, and gains 0.03 slug‑fps of momentum. Kinetic energy and momentum disagreeing is not an error — energy scales with the square of speed and momentum scales linearly with mass, so a heavier, slower arrow genuinely has less energy and more momentum. Momentum is the one that predicts penetration.
The direction that catches people out: adding weight at the FRONT weakens dynamic spine and pushes you toward a stiffer shaft — watch the effective-draw-weight column climb by 7.8 lb across that sweep. Adding weight at the BACK does the opposite, and at roughly half the magnitude. Heavier nocks, heavier vanes and a wrap all stiffen dynamic spine. A well-known spine calculator has that backwards; ours does not, and we show the working.
The 11–15% band is our Recommended Hunter Range for FOC. It is not a timid choice and it is not a compromise — it is where broadhead-tipped arrows recover from launch fastest without giving away the trajectory you paid for. Extreme-FOC builds have a place; a general-purpose hunting arrow off this bow is not it.
Speed: the rated number and the real one
Two speed columns run through this page and they are not the same claim. Rated is the IBO formula applied to Bowtech's published figure and adjusted for your draw length, draw weight and arrow mass — a bare bow's number. Real-world is that figure plus the measured gap between what bows of this model actually chronograph and what the formula predicts, which is where a rest, a sight, a stabiliser, a peep and a quiver all live.
There is no measured chronograph offset for this model. Our per-bow calibration file has no row for the Bowtech Proven 34, so the spine engine used the blanket accessory allowance of −11 fps for the bow-speed step, and the speed column is the bare IBO formula off Bowtech's published rating with no correction applied. That is why the rated and real-world figures in the table above are the same number for this bow. It is not a claim that this bow delivers its rating; it is an admission that nobody has measured it in public yet. If you chronograph yours, send it to sal@sparrowexpeditions.com.
At the reference build the two read 291 fps rated against 291 fps real-world — identical, for the reason above. Every derived number on this page — kinetic energy, momentum, drop — is computed off the real-world figure, because that is the arrow that leaves your bow.
Tuning notes for the DeadLock with Rotating Mod + FlipDisc
DeadLock, with the rotating mod and the FlipDisc. DeadLock is the best cam-lean system in production and I will argue about that: the cam moves laterally on a screw, with a scale, with no press, and it holds where you put it. It turns the single most-botched step in tuning into something you can do at the truck.
The order does not change, though. Cams chase the tail — you move the cam toward the direction of the tear, in small increments, and re-shoot. The rest moves an eighth of an inch, total, and that is a windage correction, not a tuning tool. A DeadLock screw makes it tempting to keep going. Don't; past a couple of turns you are compensating for a spine mismatch and the broadheads will tell on you at 40 yards.
What I would actually do
Pick your cam before your arrows. If you are between 25" and 30" of draw you want the Med cam and this page's tables are computed for it. If you are past 30" you are on the Long cam, and the brace goes to 7" and the speed rating drops — which softens the spine requirement slightly, while the extra arrow length you need stiffens it a lot more. Net: the Long cam wants a stiffer shaft than the Med cam at the same limb-bolt weight, not a weaker one.
Draw length and mods on the Bowtech Proven 34
Two questions come before arrows: what draw lengths does this bow cover, and which module do I need. The first is published, and it is the one that changes your arrow.
- Draw length range: 25" – 30" (Bowtech published spec)
- Draw weights: 50, 60, 70 lb
Bowtech does not publish a public mod chart for this platform, and the rotating mod makes draw length adjustable in-cam anyway. Have a shop set it and verify it on a scale — the number stamped on the mod is a nominal, and your anchor is not.
Draw length is not a comfort setting, it is a spine input. One inch is worth roughly 3.5 lb of effective draw weight — about a third of a spine class — and it moves every sight mark you have. Run your real draw length through The Forge and the spine, mass, speed and FOC all move with it; the arrow spine calculator shows the method written out; the sight tape generator reprints the tape.
Bow specifications
| Spec | Bowtech publishes |
|---|---|
| Speed rating | 336 fps (Med cam) / 331 fps (Long cam) |
| Axle-to-axle | 34" |
| Brace height | 6.625" |
| Let-off | not published by Bowtech on the product page |
| Draw length range | 25" – 30" |
| Draw weight | 50, 60, 70 lb |
| Mass weight | 4.7 lb |
| Cam | DeadLock with Rotating Mod + FlipDisc |
Every figure above read from bowtecharchery.com — Proven 34 on 10 September 2026. If Bowtech revises them this page is wrong until we fix it — tell us at sal@sparrowexpeditions.com.
Common questions
What arrow spine do I need for a Bowtech Proven 34?
At 28 inches of draw and 70 pounds, with a 100 grain point and a standard insert, the engine's window is 300 to 340 spine on an arrow cut to 29 inches back-of-point. That window is charted against Easton's and Victory's published selection ranges. Change your draw length by an inch or your point by 25 grains and it moves, which is why this page prints six combinations rather than one number.
How fast does a Bowtech Proven 34 shoot a real hunting arrow?
About 291 feet per second with the 410.3 grain reference build on this page. The rated figure for the same arrow is 291 fps. They are the same number because nobody has published chronograph data for this model, so there is no measured offset to apply — the honest answer is that the real figure is probably lower and we do not know by how much. Your bow will not read exactly this. Nobody's does.
What FOC should I run on a Bowtech Proven 34?
Eleven to fifteen percent is our Recommended Hunter Range and the reference build lands at 12.3%. That band is where a broadhead-tipped arrow recovers from launch quickly without giving away trajectory. Chasing 18 or 20 percent buys penetration you can also buy with total arrow weight, and costs you drop at every distance you actually shoot.
Where do these numbers come from?
The spine windows come from the same function that runs The Forge, which reproduces Easton's published hunting selection chart to 98 percent and Victory's to 89 percent. Weight, FOC, speed, kinetic energy, momentum and drop are derived from the component sheet and a ballistics model. The bow specifications come from Bowtech's own published page, linked on this page, read on 10 September 2026. Nothing on this page was typed from memory.
Do I need a different arrow for broadheads on a Bowtech Proven 34?
No — you need the same arrow, tuned. Build the shaft on this page with field points, get it flying, then put broadheads on the same arrows and shoot them at 30 and 40 yards. If the broadhead group walks away from the field point group, that is your tune talking, not your spine choice. Fix it at the cam and the rest, in that order, and only then consider a different shaft.
Med cam or Long cam on the Proven 34?
Draw length decides it, not preference. Bowtech publishes the Med cam at 25"-30" and the Long cam at 27.5"-33", with a 6.625" brace on the Med and 7" on the Long. In the overlap (27.5"-30") either will work; the Med is the faster of the two and the Long is the more forgiving. The tables on this page are computed on the Med cam's published speed rating.
Shop this setup
- Shop all arrows & shafts →
- Inserts, half-outs and collars →
- Vanes and fletching →
- Check this 300-spine build in The Forge →
Not sure the 300 is right for your draw? Put your real numbers into the arrow spine calculator — it runs the same engine as this page and it will tell you when you are between classes rather than guessing for you. Then print the tape with the sight tape generator.
Nearby bows
- Best arrow setup for the Bowtech Alliance
- Best arrow setup for the Mathews Lift X 33
- Paper tune chart and the cam-lean correction table
Built by archnerds, for archnerds — The Forge by Sparrow Expeditions. Questions, corrections and chronograph data: sal@sparrowexpeditions.com.