The .45 Colt cartridge, a venerable round with a rich history, enjoys renewed popularity thanks to its potent stopping power and suitability for a range of firearms, including the ever-popular Ruger Blackhawk and other Ruger revolvers. However, understanding the nuances of .45 Colt ammunition, particularly concerning "Ruger Only" loads, is crucial for safe and effective shooting. This in-depth guide will explore what constitutes a Ruger Only load, why they exist, and how to choose the right ammunition for your Ruger firearm.
Understanding .45 Colt Cartridge Variations
The .45 Colt cartridge's versatility stems from its relatively large case capacity. This allows for a wide range of powder charges and bullet weights, resulting in significant variations in pressure. Understanding these variations is key to safe handling.
Standard Pressure Loads
These are the most common .45 Colt loads and are generally safe for most firearms chambered in .45 Colt. They adhere to the standards set by the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI). Many manufacturers offer a wide selection of standard pressure loads with varying bullet weights (from 200 grains to 300 grains and beyond) and bullet types (lead, jacketed, hollow point).
+P Loads
"+P" indicates a load exceeding SAAMI pressure specifications. These loads offer increased velocity and energy but should only be used in firearms explicitly rated for +P ammunition. Using +P ammo in a firearm not designed for it can lead to damage and potential injury. Many Ruger revolvers are not rated for +P .45 Colt.
Ruger Only Loads
This is where things get specific. "Ruger Only" loads are a special category of .45 Colt ammunition. These loads are designed to function reliably in Ruger's older, stronger .45 Colt revolvers, particularly those with the characteristically stronger Ruger actions. They often utilize higher pressures than standard pressure loads but remain below the levels that would damage a properly functioning Ruger revolver. The crucial point is that these loads may not be safe for other .45 Colt firearms from different manufacturers due to the potential for exceeding pressure limits within those firearms.
Why Ruger Only Loads Exist: Strength and Safety
Ruger designed many of its early .45 Colt revolvers with robust frames and actions capable of handling higher pressures than many competitor's firearms. These older Rugers were built to handle the heavier loads historically associated with the .45 Colt. Therefore, Ruger Only loads take advantage of this increased strength. However, this comes with a critical safety caveat: Using Ruger Only loads in a firearm not designed for them can result in significant damage, including:
- Cylinder bulge or rupture: The excessive pressure can cause the cylinder to expand or even fail completely.
- Frame cracking: The revolver's frame may crack under the stress of the higher pressures.
- Barrel damage: The barrel may suffer damage, affecting accuracy and possibly leading to dangerous malfunctions.
- Serious injury or death: Malfunctions resulting from improper ammunition usage can cause serious injury or even death to the shooter and those nearby.
Identifying Ruger Only Loads
Unfortunately, there isn't a single, universally recognized marking for "Ruger Only" loads. Many manufacturers may use descriptive language on the box indicating suitability for stronger actions. Always refer to the ammunition manufacturer's website or contact them directly if you're unsure. It's crucial to always check the ammunition's packaging for any warnings or limitations.
Choosing the Right Ammunition for Your Ruger
Choosing the correct .45 Colt ammunition for your Ruger depends on several factors:
- Model of Ruger: Not all Ruger .45 Colt revolvers are created equal. Consult your owner's manual to determine the manufacturer's recommendations for ammunition types and pressure limits.
- Age of the revolver: Older Rugers are generally more robust, but even older guns have limits.
- Intended use: Are you target shooting, hunting, or using the firearm for self-defense? The appropriate load will vary based on the intended purpose.
Table 1: Example .45 Colt Loads (Note: Pressure ratings can vary significantly between manufacturers)
| Load Type | Manufacturer | Bullet Weight (gr) | Approximate Velocity (fps) | Pressure Level | Suitable for Ruger Only? |
|---|---|---|---|---|---|
| Standard Pressure | Winchester | 250 | 850 | SAAMI | No |
| Standard Pressure | Hornady | 255 | 800 | SAAMI | No |
| Higher Pressure | Buffalo Bore | 300 | 1000 | Higher than SAAMI | Possibly, Check Manufacturer's info |
Note: This is not an exhaustive list. Always consult the ammunition manufacturer's data for specific pressure ratings and recommendations.
Conclusion: Safety First
Selecting the appropriate .45 Colt ammunition for your Ruger is paramount for safety and proper function. Never use ammunition that exceeds the pressure limits specified by the manufacturer of your firearm. Always verify the ammunition's suitability for your specific Ruger model before firing. If in doubt, choose standard pressure loads. Prioritizing safety ensures years of enjoyable and safe shooting with your Ruger .45 Colt revolver.