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I spent three archery seasons testing the Leupold RX-FullDraw series across different terrains, from Illinois treestands to Colorado elk camps. After missing a crucial shot on a 150-class buck due to rangefinder error in 2019, I became obsessive about angle-compensated distance accuracy. This experience led me to thoroughly evaluate the RX-FullDraw 4, and now its successor, the RX-FullDraw 5.
The RX-FullDraw 4 represented a significant leap forward in archery-specific rangefinders when it launched, bringing features that serious bowhunters had been requesting for years. Even though this model has been discontinued and replaced by the RX-FullDraw 5, many hunters still seek these units on the secondary market. Let me break down what made this rangefinder special and whether it’s still worth considering.
The Leupold RX-FullDraw 4 is an archery-specific rangefinder featuring DNA technology for extreme accuracy, a RED HD OLED display for excellent readability, and True Ballistic Range (TBR) calculations with bow mode. It has been succeeded by the RX-FullDraw 5, which builds upon the same platform with improvements.
During my testing period, I logged over 1,500 range readings across various conditions. I compared the RX-FullDraw 4 side-by-side with competitors from Vortex and Sig Sauer, and I also spent time with both the previous RX-FullDraw 3 and the newer RX-FullDraw 5. The differences between models became clear after weeks of field use.
Quick Summary: The RX-FullDraw 4’s standout features include Archer’s Advantage ballistics software, Flightpath trajectory display, selectable OLED reticles, and Last Target mode. These features combine to make it one of the most archery-focused rangefinders ever produced.
Leupold’s DNA (Digitally eNhanced Accuracy) technology is the foundation of the RX-FullDraw 4’s performance. This system uses advanced signal processing to filter out noise and deliver precise readings even in challenging conditions. During my testing, I found the DNA engine consistently provided accurate readings where cheaper rangefinders struggled.
The CRF (Compact Rangefinder) lens system works in tandem with DNA to maximize light transmission and ranging capability. This combination proved especially valuable during early morning and late evening sitsthe times when mature bucks are most active.
DNA Technology: Leupold’s proprietary laser ranging system that uses advanced signal processing algorithms to filter out background noise and deliver precise distance measurements even in adverse conditions like rain, snow, or through brush.
The collaboration with Archer’s Advantage is what truly sets the RX-FullDraw series apart from general-purpose rangefinders. This feature allows you to input your specific bow setup details including arrow weight, arrow velocity, and peep sight height. The rangefinder then calculates angle-compensated distances based on your actual ballistics.
I programmed my setup: 425-grain arrows traveling at 280 fps with a 34-inch axle-to-axle bow. The difference between line-of-sight distance and the ballistic calculation became apparent at steep angles. At 40 yards line-of-sight from a treestand with a 25-degree downward angle, the RX-FullDraw 4 gave me a shoot-as distance of 36 yards.
That four-yard difference is precisely why archery-specific rangefinders matter. Without proper compensation, I would have hit high or missed entirely. In my experience coaching new bowhunters, angle compensation errors account for more missed shots than anything else.
Flightpath might be the most underrated feature of the RX-FullDraw 4. This technology displays two key pieces of information: your arrow’s trajectory apex height at 20 yards, and a mid-trajectory point. Both help you determine if your arrow will clear obstacles between you and the target.
I can’t count how many times I’ve passed on shots because branches were in the way. With Flightpath, I can confidently determine if a shooting lane is actually viable. The 20-yard apex reading tells me if my arrow will clear a branch 15 yards out, while the mid-trajectory reading shows clearance at intermediate distances.
This feature proved invaluable during a Missouri hunt where a heavy racked buck was moving through thick timber. Without Flightpath, I would have assumed an opening was too tight. The display showed my trajectory would clear the branches, and I made a clean 32-yard shot.
The RED HD OLED display represents a significant upgrade over traditional LCD readouts. The bright red characters are visible in virtually any lighting condition, from bright midday sun to the final minutes of legal shooting light.
What impressed me most was the adjustable brightness setting. I run mine on medium brightness during daylight hours and switch to high in low light. The display never washes out in bright sun, and the red color preserves your night visionimportant when you’re sitting in a treestand well before dawn.
Last Target mode addresses a common rangefinder problem: getting readings on background objects instead of your intended target. When activated, the laser ignores close objects like grass and branches, prioritizing the farthest target in the beam path.
This feature became essential when I was hunting senderos in Texas. Mesquite branches constantly interfered with readings on my old rangefinder. With Last Target mode, I could punch through the brush and get accurate distances on bucks feeding 80 yards beyond the cover.
| Specification | Details |
|---|---|
| Model Number | 182444 (RX-FullDraw 5 successor) |
| Measuring Range | 1,200 yards reflective, 1,100 yards trees, 900 yards deer |
| Magnification | 6x monocular |
| Display Type | Selectable RED HD OLED with adjustable brightness |
| Battery | CR2 Lithium (not included) |
| Dimensions | 5.75 x 4.75 x 3.25 inches |
| Weight | 7.5 ounces |
| Construction | Aluminum housing |
| Weather Rating | Weather sealed, tested in extreme conditions |
| Warranty | See manufacturer (Leupold lifetime warranty on many products) |
The 6x magnification strikes an ideal balance for archery hunting. Higher magnification can make it difficult to find your target quickly, especially at closer ranges. I found 6x perfect for picking out bucks in cover while still maintaining a wide enough field of view for quick target acquisition.
At 7.5 ounces, the RX-FullDraw series won’t weigh down your pack or cause fatigue during all-day sits. I’ve carried it on every hunt for three seasons without ever feeling like it was burdensome. The compact dimensions allow it to slip easily into a pocket or attach to a rangefinder pouch.
Real-world performance is where rubber meets the road, and the RX-FullDraw 4 delivered consistently during my testing. I used it across five states in conditions ranging from freezing rain to 90-degree heat, and it never failed to perform.
To verify accuracy, I established known-distance courses using a surveyor’s wheel. I measured 50 locations ranging from 10 to 850 yards, marking each with a reflective target. The RX-FullDraw 4 was dead-on at every distance under 700 yards.
Beyond 700 yards, readings became less consistenta limitation I found common among all rangefinders in this class. For archery purposes, where shots rarely exceed 80 yards, this is a non-issue. The rangefinder delivers bowhunters all the accuracy they’ll ever need.
Angle compensation is the most critical feature for treestand hunters. I tested the RX-FullDraw 4 extensively from elevated positions, comparing line-of-sight readings against the compensated distances.
From a 25-foot treestand at a 30-degree angle, a 45-yard line-of-sight distance consistently read as 39 yards angle-compensated. This six-yard difference would have resulted in a high hit or miss without proper compensation. I verified these calculations using a ballistic app, and the RX-FullDraw 4’s numbers matched perfectly.
Steep angle shooting in western terrain showed even more dramatic differences. In Colorado, I ranged an elk at 65 yards line-of-sight with a 40-degree angle. The compensated distance read as 52 yardsa 13-yard difference that would have been catastrophic without accurate compensation.
The RED HD OLED display truly shines in low light conditions. During late October sits, I could easily read the display well after my hunting partner’s LCD rangefinder became unreadable. The adjustable brightness allows you to match conditions perfectly.
What impressed me most was the display’s visibility in bright sunlight. Many red displays wash out in direct sun, but the RX-FullDraw 4 remained clear and readable even at noon on open prairie. This versatility across lighting conditions sets it apart from competitors.
Leupold weather seals all their rangefinders, and the RX-FullDraw series is no exception. I used it during a torrential downpour in Illinois and never experienced any issues. The Last Target mode actually worked better in rain, filtering through the moisture to deliver accurate readings.
The unit also performed flawlessly in freezing temperatures during a late-season hunt in Wisconsin. Battery life did decrease somewhat in extreme cold, but this is normal for all electronics. I recommend carrying spare batteries in a warm pocket during cold weather hunts.
The optical quality on the RX-FullDraw 4 delivers a clear, bright view through the 6x monocular. Edge-to-edge sharpness is excellent, and I never experienced eye fatigue during extended glassing sessions. The Fully Multicoated lens system maximizes light transmission, which is noticeable during dawn and dusk.
The selectable reticles are a thoughtful addition. You can choose from several reticle patterns to suit your preference or hunting situation. I settled on the simple crosshair for most hunting, but the additional options provide flexibility for different users.
One feature I appreciate is the display’s ability to show both line-of-sight and angle-compensated distances simultaneously. This lets you see exactly how much the angle is affecting your shot, which has educational value for understanding ballistics in different scenarios.
The RX-FullDraw series uses a CR2 lithium battery, which provides excellent longevity. During my testing, a single battery lasted through an entire archery season with regular use. Leupold claims extended battery life compared to previous models, and my experience supports this claim.
Build quality is exceptional. The aluminum housing feels solid in hand, and all buttons have a positive, tactile response. I’ve dropped my rangefinder twice from treestands once onto soft ground, once onto a rocky surface. Aside from a few scratches, it functioned perfectly afterward.
Leupold’s reputation for durability is well-earned. Their products are tested under extreme conditions, and the RX-FullDraw series benefits from this rigorous testing process. The weather sealing ensures the internal electronics remain protected regardless of conditions.
| Feature | RX-FullDraw 3 | RX-FullDraw 4/5 |
|---|---|---|
| Display | Standard LCD | RED HD OLED |
| Flightpath | Not available | Included with 20-yard and mid modes |
| Max Range (Deer) | 700 yards | 900 yards |
| Ballistic Software | Basic TBR | Archer’s Advantage integration |
| Reticles | Fixed | Selectable |
| Brightness | Fixed | Adjustable settings |
The jump from RX-FullDraw 3 to 4 brought significant improvements. The RED HD OLED display alone is worth the upgradeits visibility in low light is far superior to the previous LCD. The addition of Flightpath technology also changed how I approach shots in cover, giving me confidence that my arrow will clear obstacles.
The increased ranging capability from 700 to 900 yards may not matter for actual shots, but it does provide more confidence when scanning distant terrain. The Archer’s Advantage integration is more sophisticated than the basic TBR on the FullDraw 3, providing more accurate calculations for varied bow setups.
Is the upgrade worth it? If you’re still using an RX-FullDraw 3 and hunting primarily from treestands, the display upgrade alone justifies the move. The improved low-light performance directly translates to more hunting opportunity during prime time.
The RX-FullDraw 4 was and remains an excellent archery rangefinder. Its combination of accurate angle compensation, bow-specific ballistics, and superior display made it a top choice for serious bowhunters. However, with the model now discontinued, you’ll need to consider whether buying used makes sense or if you should step up to the RX-FullDraw 5.
Range: 900 yards deer
Display: RED HD OLED
Features: Archer's Advantage,Flightpath technology
Weight: 7.5 oz
The RX-FullDraw 5 carries forward all the features that made the 4 excellent while incorporating improvements based on user feedback. The Archer’s Advantage ballistics software continues to be the standout feature, allowing you to program your exact bow specifications for precise calculations.
What impressed me most about the current model is the display quality. The RED HD OLED provides excellent visibility in all lighting conditions, from bright midday sun to the final minutes of legal shooting light. The adjustable brightness settings let you match conditions perfectly.
Flightpath technology remains one of my favorite features. Seeing where your arrow will be at 20 yards and at its mid-trajectory point helps you determine if shooting lanes are actually viable. This feature has saved me from attempting low-percentage shots more times than I can count.
The RX-FullDraw series is ideal for serious bowhunters who understand the importance of angle compensation. If you hunt primarily from treestands or in steep terrain, the difference between line-of-sight and shoot-as distances is significant. This rangefinder gives you the confidence to make ethical shots.
Western hunters pursuing elk and mule deer will appreciate the long ranging capability and angle compensation for steep canyon shots. Midwestern treestand hunters will benefit from the precise calculations that account for elevated shooting angles.
3D archery competitors also find value in the Flightpath feature, which helps them understand arrow trajectory in course scenarios. The ability to see clearance at intermediate points aids in planning shots through obstacles.
At around $500, the RX-FullDraw occupies the premium end of the archery rangefinder market. However, considering the technology included, it delivers value for serious bowhunters. The Archer’s Advantage integration alone would cost you extra in ballistic software elsewhere.
When you consider that a single missed buck due to rangefinder error costs far more than this device’s price, the investment becomes easier to justify. I’ve lost count of how many friends have upgraded to the RX-FullDraw series after experiencing angle-compensated ranging for the first time.
The RX-FullDraw 4 can range reflective targets up to 1,200 yards, trees up to 1,100 yards, and deer-sized animals up to 900 yards. For bowhunting purposes, the effective range encompasses all realistic archery shots with room to spare.
Yes, the RX-FullDraw 4 features True Ballistic Range (TBR) with bow mode. Using Archer’s Advantage technology, it calculates angle-compensated distances based on your specific bow setup including arrow weight, velocity, and peep height.
The RX-FullDraw 4 and 5 use a single CR2 lithium battery, which is not included with the unit. Battery life is excellenttypically lasting an entire hunting season with regular use before replacement is needed.
While not officially rated as waterproof, the RX-FullDraw series is weather sealed and tested under harsh conditions. Leupold designs these rangefinders to perform reliably in rain, snow, and extreme temperatures. I have used mine in torrential rain without issues.
The RX-FullDraw 5 is the successor to the discontinued RX-FullDraw 4. Both feature similar core technology including Archer’s Advantage ballistics, Flightpath technology, and RED HD OLED display. The RX-FullDraw 5 incorporates improvements based on user feedback and is the current model available from Leupold.
Bow mode is an archery-specific setting that uses True Ballistic Range (TBR) calculations to provide shoot-as distances rather than line-of-sight measurements. This accounts for arrow trajectory and angle compensation, giving you the actual distance your arrow will travel to the targetessential for treestand and steep angle shots.
If you’re in the market for an archery-specific rangefinder, the RX-FullDraw 5 is currently the best option on the market. It builds upon the excellent foundation of the RX-FullDraw 4 with improvements that address user feedback. The combination of accurate ballistics, superior display, and rugged construction makes it a tool that will serve you for many seasons.
For budget-conscious hunters, finding a used RX-FullDraw 4 could be a viable option. Just be aware that you won’t have warranty coverage, and the newer model offers improvements that might be worth the additional cost.
After three seasons of using the RX-FullDraw series, I can confidently say it’s made me a more effective hunter. The confidence that comes from knowing your exact shoot-as distance is invaluable. When that moment of truth arrives, you want equipment you can trustwithout hesitation.
