• OPTICAL BOOSTERS
  • Booster #1
  • Booster #2
  • Booster #3
  • Booster Lenses
• Tips/FAQs
• Testimonials/Links
• About
• News/Forum
• Camp Stand Down
• Contact
• Wholesale/Distributors
• Home

We ship U.S. Postal Service Air Freight to anywhere in the world. Rate calculated automatically at time of purchase.

Adjustment Instructions & Tips for Best Performance

for the BulzEyePro ORIGINAL Optical Boosters

Properly Installing Your Booster

Release eyepiece lock ring and screw lock ring clockwise until end of threads. Now turn eyepiece clockwise and screw to lock ring. Install Booster as per package directions, by screwing on Booster #1 to finger-tight, or slipping on Booster #2 and #3 to eyepiece stop (approx. 3/16-inch from booster lens).

Adjusting Your BulzEyePro Booster for Best Performance

After proper installation, place scope or firearm into a steady rest. Looking through the scope at light or white background 50 yards or more away, turn eyepiece out (counter-clockwise) until the crosshairs become solid and dark. Now adjust your focus or parallax to a clear crisp picture and start again with the eyepiece. Bring it out and in until the picture is clear and crisp. Then return to your focus or parallax adjustment and refocus that.

Continue to go back and forth until you are satisfied that you have a clear, crisp picture/crosshair with zero parallax. Lock the lock ring to eyepiece finger tight and you're ready to shoot. You do not need to adjust eyepiece for different distances. You will need to adjust parallax/focus for each different distance. If you are over age 38, you should check your eyepiece adjustment each year or whenever your crosshairs/picture is not perfectly clear. (See presbyopia information.)

How to Become an Expert with the BulzEyePro Optical Boosters

Adjusting to Zero Parallax

Place your firearm into a rest that will hold your firearm without movement. Adjust your rest so that your crosshairs are on the bulzeye of your target. While adjusting your distance focus, bob your head up and down. You will see your crosshairs moving up and down on the target. When you are at zero parallax, as you bob your head up and down, the cross hairs will NOT move on the target. Proper adjustment of parallax ensures that you are pointing your firearm at the exact same spot every time, at the exact same distance. When the distance changes so will the adjustment of parallax. Unless otherwise specified, scopes without parallax/focus adjustments are set at the factory for zero parallax at 150 yards. Any other distance will automatically have parallax issues. You can alleviate this parallax issue by drawing your eye away from the scope until you have a tiny hole to see from through your eyepiece (the eyepiece gets dark from the outside and closes in until there is but a tiny hole to see through). This technique insures that your eye is centered each time you site your target.

"Kentucky Windage" and "Mirage"

At short distances, wind flags can be helpful but difficult (if not confusing). At long distances, the wind will change long before you can read all the flags and get a shot off. The answer... In the old days it was called "Kentucky Windage". Today we add Kentucky Windage (prevailing wind) to mirage. Different densities (temperatures) of air have different affects on wind drift and bullet drop. Learning these differences and their affects will enhance your ability to "Hit The BulzEye" at longer distances.

The BulzEye Pro Advantage

It took us years to design a lens that would at least lessen the effects of mirage on the target. While doing so we discovered a unique quality of a certain polymer manufacturing technique that would place a fine black line on the leading edge of each layer of mirage. Then we were able to enhance this polymer so that it would, first, disperse the target moving effects of mirage. Second, allow us to see the leading edge of each wave of mirage (so that we could see wind speed and direction). And third, discover the differences in air densities throughout the mirage (adjust for bullet drop). This last enhancement has become "the cats ass" to long-range shooters.