BRO Tube Diana Grade 28G Improved Modified Choke

The Black Rain Ordnance Diana Grade 28G Improved Modified choke tube is engineered for hunters and sport shooters who demand precise, consistent patterns from their 28-gauge shotgun. Built from 17-4 stainless steel that's heat-treated before machining, this tube combines durability with the refined aesthetics that make it a natural fit for quality shotguns like the Browning Citori. The Diana Grade design features a longer internal taper that optimizes shot distribution, giving you tighter, more predictable patterns in the field or at the range.

What sets this choke apart is the titanium nitride surface treatment—hardened to 72HRC for exceptional wear resistance and reduced plastic wad buildup that can degrade performance over time. The concentricity is held to exacting tolerances, ensuring your patterns stay true shot after shot. The tube extends slightly beyond the barrel for ergonomic removal and installation without tools or fumbling, a practical detail that matters when you're in the field.

The Improved Modified constriction (45–75% pattern) is the working middle ground for most hunting and clay situations: tight enough for distance, open enough for versatility. At 4.8 ounces, it balances weight and durability without throwing off your gun's handling. Available in the polished titanium nitride finish that looks as good as it performs.

Key Features

• 17-4 stainless steel construction with pre-machining heat treatment for lasting durability
• Titanium nitride hardened surface (72HRC) resists wear and minimizes plastic fouling
• Extended choke taper design improves pattern density and consistency
• Precision concentricity for superior shot grouping
• Extends past barrel for easy hand removal and installation
• Improved Modified constriction suitable for hunting and clay sports

Specifications

Frequently Asked Questions

What shotguns is this 28-gauge choke compatible with?

This tube is designed for 28-gauge shotguns with standard choke threading. It is known to fit Browning Citori and other quality shotguns chambered in 28 gauge, though you should verify your gun's choke system before ordering.

What does Improved Modified mean, and when would I use it?

Improved Modified is a mid-range constriction that delivers 45–75% of your shot pellets in a 30-inch circle at 40 yards. It's versatile enough for hunting upland game and clay sports, offering tighter patterns than an Improved Cylinder but more open than a Full choke.

Why does the titanium nitride surface matter?

The titanium nitride hardening (72HRC) significantly reduces wear from repeated use and plastic wad contact, which can damage softer choke surfaces and degrade pattern performance over time. It also helps keep the choke cleaner between uses.

Is this choke easy to remove and install?

Yes. The tube extends slightly beyond the barrel, allowing you to grip and remove it by hand without special tools—a practical advantage when you're afield and need to switch constrictions quickly.