(2 customer reviews)



The Shepherd 3-10X40 P1A rifle scope has a reticle designed for the flattest shooting guns on the market today.  It is far and away the best moving target acquisition rifle scope system available and is a must have for the avid shooter as an addition to their hunting or tactical gear.  The P1A has Shepherd’s patented reticle range finding system designed specifically for modern rifle platforms.  It also features Shepherd’s One Shot Zero allowing the user to dial in the gun in a single shot.  The 310-P1A Shepherd rifle scope gives shooters the fastest, one step, target range estimator and ballistic drop calculator in the world.  This unique rifle scope allows even an inexperienced shooter the ability to just “Fit and Fire”.  The 310-P1A rifle scope features Shepherd’s PVD multi-layer coated HD optics which deliver a crystal clear image through the entire field of view.  The model 310-P1A has 18” range-finding circles for use on large targets including deer and military silhouettes.  The circles can be adjusted up for flatter shooting rounds or down for rounds with a bit more drop.  The 310-P1A rifle scope is ideal for the .257 Weatherby Magnum, 7mm Weatherby Mag, or 300 Weatherby Mag.  The bullet drops match up almost perfectly for the 300 Weatherby Mag Select Plus Barnes TSX 180 Grain or the Nosler Partition 150 Grain.  The weapon sight is ideal for rounds with a muzzle velocity of 3,200 feet per second to 4,000 feet per second.  If you want to check the fit of this reticle to your gun/round please visit our scope finder.  This is definitely a must have hunting or tactical accessory for anyone using high powered flat shooting rifles.  This rifle scope is extremely accurate at all distances out to 1000 yards.  You can purchase this rifle scope here by selecting the “Add To Cart” button or find a dealer or store near you using the locator at the top of the page.  


 Magnification 3x - 10x
 Field of View (FOV) @ 100yds, ft 41.5 - 15
 Relative Brightness 175 - 16
 Eye-Relief, in 3 - 3.5
 Weight, oz 17
 Length 14
 Tube 1"
 40mm Adjustable Objective 25' - infinity
Drop Figures For P1A Reticle
Range in Meters3004806007008009001000
Bullet Drop in inches-10.1"-39.6"-71.0"-107.0"-153.1"-212.0"-286.1"
Drop Figures for use in comparing the P1A reticle to bullet drop on a ballistic calculator
Range in Yards1002003004005006007008009001000
Drop in inches0-2.10"-8.24"-18.80"-34.40"-56.00"-85.40"-121.00"-166.00"-224.00"


  • One Shot Zero
  • High Transmission Optics for Excellent Low Light Performance
  • World's Fastest and Easiest Passive Range Finder and BDC
  • Argon Gas Filled, Waterproof, Shockproof
  • Visual Confirmation of Wind and Elevation
  • Instant Range Finding and BDC
  • Instant Visual Verification of the Original Zero
  • 1/4 M.O.A. Clicks on the Ranging Circles and Friction Adjustments on the Crosshairs with 0.001 M.O.A.
  • Patented Dual Reticle System
  • P1A Reticle with 18" Circles Useful for Deering Hunting and Military Silhouettes
  • Flat Black Finish
  • Lifetime Warranty

2 reviews for SHEPHERD 3-10X40 P1A

  1. Shawn Morris

    This is a awsome hunting scope. The range finding is just awsome and works on any power. And the brightness is great better than I have ever seen in a scope. The one shot zero works great. The only con. Is I can’t afford to put one one every rifle I own

  2. lynn pettit

    I put one on a Remington 300rum and went to Africa and got 6 large animals with 6 shots out to 400yds in the brush. the outfitter could not believe how well the scope worked!! on this gun it will shoot 1/4 moa out to 1000yds.

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