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Picatinny Rail
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The rail can now be attached to the bases with two of the three 10-32 screws provided. The rear base screw is a flat-head screw, which is not fully tightened at this time. The other front screw is a 10-32 button-head screw, which goes in the slotted front hole. This allows the base to be moved from side-to-side at the front for exact scope reticle centering with the bore.

Picatinny Rail
Shown here is Holland’s solidly assembled Picatinny Rail Mount on a Remington Model 40X rifle with a Sightron 36X target scope and Accushot Picatinny Scope Rings. This scope/cartridge combination produced quarter minute groups with the 22 PPC cartridge and a Krieger barrel using both Sierra and Berger bullets.


Next, before mounting the scope on the rifle, center the scope reticle to center in the scope. This is accomplished by turning the reticle adjusting-knob until it reaches one end—R or L, and then count the clicks all the way to the opposite side. Divide the total clicks in half and set the reticle in this position to center it. Mount the scope on the rifle and align the reticle to the bore. This is also done for vertical reticle position at this time.

Picatinny Rail
This picture is proof that the Picatinny rail mount system can withstand the heavier recoil when mounted on a standard 700 Remington action shooting a 300 Winchester Magnum cartridge. These 10 five-shot groups were shot at 100-yards using a Sierra 150 gr. HP match and Berger 155 gr. VLD Match bullets. Groups averaged under 0.60 MOA. A 36X Leupold scope was mounted on the Std. Model 700 Remington action using NEAR rail mount and NEAR rings. The action is pillarbedded into a Bell & Carlson stock. The barrel is a Douglas Premium grade. This combination is part of a two-bolt switch barrel system made up by the author converting the 700 Remington to a single-shot action.


At this point, with the scope temporarily mounted and with the reticle coinciding with the bore, remove the scope, with rings attached, from the base. This is where the final rail base attaching screw comes into use. A hole is drilled and tapped in the extreme forward end of the front base for the final 10-32 flat head attaching screw. This hole is centered, drilled and tapped through the front hole in the rail and requires attention to detail for exact centering. The screw used is a 10-32 requiring a number 22 drill size. If you lack the ability to accomplish this task, seek help. This final screw, along with the other two holding the rail base, locks things solidly in position providing an essentially custom fit Picatinny Rail Mount on your rifle. Holland’s does recommend the use of a drop of Loctite to each screw after the thread surfaces are thoroughly cleaned. With this there is available a machinist’s Sine-Bar to hold the action for precise milling of the bases, but this was not required as I mounted the scope on one of my Model 40X Remington rifles. The Holland Picatinny Rail Mount system provides a very solid interface between scope and receiver.

Picatinny Rail
This full view shows three of the four rifles covered in the text used in mounting and testing three different Picatinny rail and scope ring mounting systems. From Top: Top: NEAR rail mount with NEAR scope rings mounted on a short action Model 70 Winchester Stealth II rifle. An 8X-32X Redfield Target scope is seen mounted here. The caliber is a 25 WSSM with a Broughton barrel. Center: Brownell’s Picatinny rail mount with Brownell’s Picatinny scope rings used to mount a 36x42 Sightron scope on a Remington Model 40X rifle in caliber 6mm PPC with a Bartlein barrel. Bottom: Holland’s Picatinny rail mount along with Accushot Picatinny scope rings used to mount a Sightron 36x42 target scope on a Remington Model 40X rifle. The barrel is a Krieger chambered for the 22 PPC cartridge. This rail mount system allows for a perfect pre-centered scope reticle before rail was finally attached.


In conclusion, I can readily recommend any of the three Picatinny rail mounting systems that I have chosen to install and evaluate on some of the most accurate rifles available. Granted, it may not always be easy to determine—with certainty—if making a change in something like a scope base will, indeed, improve accuracy of a rifle. But sound reasoning tells us if properly placed support is added to a mechanical structure, it will yield less to outside forces, thereby improving or maintaining precision. This does not mean I’ll be going out to change all my rifles to the more rigid rail system…not quite yet. Most of the properly mounted, better, conventional scope mounts perform at a near equal to, or at least perfectly satisfactory level to the rail mount systems. In both cases, mounting is critical. The choice of usage, therefore, must be well thought out and fit the intended need of each gun and its owner.

Contacts

Bell & Carlson Inc.
101 Allen Road
Dodge City, KS 67801
(620) 225-6688
bellandcarlson.com

Remington Arms Co. Inc.
870 Remington Drive
PO Box 700
Madison, NC 27025
(800) 243-9700
Sierra Bullets
PO Box 818
Sedalia, MO 65302
(800) 223-8799
sierrabullets.com

Winchester Repeating Arms
275 Winchester Avenue
Morgan, UT 84050
(801) 876-3440
winchesterguns.com

Leupold & Stevens, Inc.
14400 NW Greenbrier Pkwy.
Beaverton, OR 97006
(503) 646-9171

Holland’s Shooters Supply, Inc.
PO Box 69
Powers, OR 97466
(888) 875-0950
hollandguns.com

Brownell’s Inc.
200 South Front St.
Montezuma, IA 50171
(800) 741-0015
brownells.com

Sightron Inc.
100 Jeffery Way, Suite A
Youngsville, NC 27596
(919) 562-3000
sightron.com

Near Mfg. Inc.
PO Box 1677
Camrose, Alberta
T4V 1X6 Canada
(866) 608-2441
scopebases.com

Douglas Rifle Barrels, Inc.
5504 Big Tyler Road
Charleston, WV 25313
(304) 776-1341

Berger Bullets
4275 North Palm Street
Fullerton, CA 92835
(714) 447-5456
bergerbullets.com

Broughton Rifle Barrels
North Mfg. Co. Inc.
PO Box 1010
Campbellsport, WI 53010
(920) 922-4882
rifle-barrels.net

Krieger Rifle Barrels, Inc.
2024 Mayfield Road
Richfield, WI 53076
(262) 628-8558

Bartlein Barrels, Inc.
W208 N16939 N Center St.
Jackson, WI 53037
(262) 649-1574
bartleinbarrel.com



Precision Shooting magazine is one of the oldest continuously published firearms magazines in the US; its first issue was in May of 1956. While it if often thought of as "home" by Benchrest shooters as well as Highpower and Smallbore shooters, its subscription base is considerably broader. Other areas that are given frequent coverage include wildcat cartridges, military sniping, long range varmint shooting, accuracy gunsmithing and reloading, equipment reviews and firearms-related history. Its cadre of writers is unique and most of them write only for this publication.



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