The EGW Winchester 70 scope base is a one-piece Picatinny rail mount engineered for Winchester Model 70 long-action rifles. If you're running iron sights and want to add a modern optic without gunsmithing, this base gives you a rock-solid platform while keeping your rifle closer to the barrel for a cleaner sight picture and faster target acquisition. It's precision-machined from 7075 T6 aluminum—the same material used in aerospace—and fits directly to the factory scope mount holes on receivers with .860 hole spacing on the front and rear rings.
The design is straightforward: no drilling, no tapping, just bolt it down and mount your rings. The one-piece construction eliminates the flex and play that separate two-piece bases can introduce, which matters when you're trying to land shots at distance or in the field. The full-width Picatinny slots are gauged to military spec (MIL-STD 1913, +/-.002 tolerance), so any quality Picatinny or Weaver rings will fit and hold zero. The mount is .100 inches lower than EGW's lightweight version, positioning your scope closer to the bore axis for a more ergonomic cheek weld and potentially tighter groups.
Installation is dead simple: the included socket head Torx screws and wrench get you started, and EGW specs 20 inch-pounds of torque with a drop of blue Loctite. This is a no-frills, heavy-duty piece that does one job extremely well—give your Winchester 70 a reliable, repeatable platform for any modern scope you choose to run.
Key Features
- One-piece Picatinny rail eliminates flex and improves return-to-zero consistency
- Direct fit to Winchester Model 70 long-action receiver with .860 hole spacing—no gunsmithing required
- Accepts both Picatinny and Weaver scope rings for maximum flexibility
- Machined from 7075 T6 aluminum for exceptional rigidity and durability
- MIL-STD 1913 specification slots ensure reliable ring fitment
- Lower-profile height keeps optic closer to barrel centerline for improved accuracy
- Includes socket head Torx screws, wrench, and torque spec guidance
Specifications
| Brand | EGW |
| Material | 7075 T6 extruded aluminum |
| Compatibility | Winchester Model 70 long action (.860 hole spacing) |
| Rail Type | Picatinny (MIL-STD 1913) |
| Ring Compatibility | Picatinny and Weaver |
| Installation | No drilling or tapping required |
| Recommended Torque | 20 inch-pounds |
| Recommended Sealant | Blue Loctite |
| Included Hardware | Socket head Torx screws and wrench |
Frequently Asked Questions
Will this mount fit my Winchester Model 70?
Yes, if your rifle is a long-action Winchester 70 with standard .860 hole spacing on the front and rear receiver rings. The base bolts directly to the factory scope mount holes—no alteration needed. If you're unsure of your hole spacing, contact us with your rifle's serial number or specifications.
Can I use this with any scope ring?
The Picatinny rail accepts both Picatinny and Weaver scope rings, giving you plenty of options. Make sure your rings are in good condition and properly torqued to avoid movement.
What's included?
The base comes with socket head Torx screws, a Torx wrench, and EGW's installation guidance (20 inch-pounds torque, blue Loctite recommended).
How is this different from a lightweight base?
This heavy-duty version is .100 inches lower than EGW's lightweight mount, positioning your optic closer to the barrel for a lower, more natural sight picture and potentially better accuracy potential. The heavier profile also contributes to overall rigidity.
