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Are there specific gun modifications needed for optimal use of 3.5-inch?

April 5, 2026

Quick Answer

Yes, specific gun modifications are needed for optimal use of 3.5-inch shells, including a longer barrel to handle the extra length and a stronger recoil system to manage the increased recoil forces.

Understanding the Differences Between 3-inch and 3.5-inch Shells

When it comes to using 3.5-inch shells in a shotgun, the key difference from 3-inch shells is the additional length. The longer shell requires a longer barrel to ensure proper chambering, loading, and ejection. A 3.5-inch barrel is typically recommended for use with 3.5-inch shells to prevent any issues with the shell not fully seating or not ejecting properly.

Gun Modifications for Optimal Use of 3.5-inch Shells

To handle the increased recoil forces associated with 3.5-inch shells, a stronger recoil system is necessary. This includes a heavier spring or a specialized recoil pad. Some shotguns, such as those designed for waterfowl hunting, may already have these modifications built-in. However, for other shotguns, additional modifications may be required to ensure safe and effective use with 3.5-inch shells.

Choosing the Right Shotgun for 3.5-inch Shells

When selecting a shotgun for use with 3.5-inch shells, it’s essential to consider the gun’s overall design and specifications. Look for a shotgun with a 3.5-inch or longer barrel, a strong recoil system, and a reliable action. Some popular shotgun models, such as the Remington 870 Express Tactical, are designed specifically for use with 3.5-inch shells and may be a good option for hunters who plan to use this type of ammunition.

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