Just received my new 460 Rowland recoil damper unit.
This thing basically replaces all recoil spring function in a 1911 which means the "reaction spring" need only be sufficiently powerful to effectively chamber the next round - anywhere from 9 to 11 pounds!
Bear in mind that recoil springs really do NOTHING to retard slide opening. That job is handled by slide and barrel mass. A puny recoil spring could never hope to counteract the full force of a fired bullet. With that in mind, the V2 uses pneumatic compression to decelerate the slide to ZERO within the last 4mm of travel, having removed ALL "energy" from the slide. All that is need is an action spring capable of chambering the next round up and in my gun that's an 11 pound coil spring.

This is the ultimate in the evolution of the 1911 and recoil mitigation! Racking the slide to chamber a 1,000 foot-pounds of energy cartridge takes no more strength than a child can muster. Gun weight is reduced because the heavy steel guide rod is gone. Imagine a pistol that delivers above 44 magnum power at 38 ounces with astonishingly mild recoil - especially with the V2 system.

Attached Images

	InkedRIA 460R RS VS full.jpg (104.8 KB, 46 views)
	RIA 460R dis V2.jpg (80.8 KB, 51 views)
	RIA slide 460R V2.jpg (83.3 KB, 50 views)

As I see it, the guide rod is the pneumatic piston. Very sneaky! Is there a pin hole at the chamber end of the rear guide rod?

Maybe you can reduce weight by getting rid of the 8-to-10-ounce muzzle break! I had a gunsmith in the early 80's that used a section of 20 gauge barrel about 1 5/8"long and venter at a rearward angle to stop muzzel climb. It was connected to the barrel bushing!

Ivan

Seems like an interesting idea.

Would it have applications for the hot 10mm loads possibly?

Gas retarded blowback that doesn't need a port in the barrel. Neato!

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Release the Kraken

The brake weighs 2.6 ounces. Overall gun weight is 38.8 ounces with brake.

There is no bleed hole so my guess is the piston shape allows a metered amount of air to escape as it closed in the cylinder. I think the pointed shape prevents dieseling. No spring is required to halt the slide opening, just to push it back forward and chamber a round.

To be effective the brake must be attached to the barrel.

I tried setting up another 1911 using a Wilson Combat "bushing brake" and the cycling mass spread the frame rails sufficiently to bind the slide up. Problem with bushing brakes is they don't have adequate internal baffle surface area and too much gas escapes past the bullet since the brake opening is barrel diameter, but if they could work, they would definitely off-load the locking lugs!

Attached Images

	460R comp weight.jpg (84.0 KB, 11 views)
	InkedRIA 460R weight.jpg (58.1 KB, 2 views)

It works on any 1911 including 10mm. It reduces the need for overpower recoil springs, or really, any other gun modification. Felt recoil is lessened (even without a comp), as is muzzle rise.

The V2 isn't cheap, but like everything else that actually works, it's worth the money.

In the video below you can easily see how mild is the recoil of the 1911 even with 460 loads.

Tuning Your 460 Rowland V2 Recoil Damper - YouTube

I ordered one yesterday and I am suposed to get it in about 2 weeks.

I have a Clark 460 Rowland built on a Colt Combat Elite to try it on first.

What I am really interested in is trying it on a Les Baer 6" 10mm Hunter.

I also have a 6" 9X25 Dillon conversion barrel for it and both throw the brass about 50' even with a flat bottom firing pin stop. This damper might be the answer to some of my problems.

Interesting concept. I have a Clark Kit and love it as it is but would shoot it a lot more if the recoil was not so mean.