I need an Education on the .460 Rowland Platform...

[jeremy]

The .460 Rowland...

I have a question. From what I have read any Weapon chambered for .460 Rowland is still capable to fire .45 ACP...

Any truth to this?!

I am looking at building a couple of AR Pistol Caliber Systems and am looking at .460 Rowland as opposed to .45 ACP...

 

[walker]

www.460rowland.com You could try contacting these people...

 

[45-70]

The answer is a definite .... maybe. Per the folks at Rowland;

"The 460 Rowland case is 1/16 of an inch longer than the .45 ACP shell casing to prevent it from chambering in an unmodified .45 ACP gun, but in many models, the .45 ACP will still function in a 460 Rowland chamber. Sort of like the relationship of the .38 Special to a .357 Magnum– just on a larger and more powerful scale."

I have a Norinco I'm thinking about converting to a .460

 

[AllenM]

You can fire 45 acp from a 460 rowland I have done it several times. What I shot were hot hand loads though. not sure how it would cycle with light loads

 

[jeremy]

The answer is a definite .... maybe. Per the folks at Rowland;

"The 460 Rowland case is 1/16 of an inch longer than the .45 ACP shell casing to prevent it from chambering in an unmodified .45 ACP gun, but in many models, the .45 ACP will still function in a 460 Rowland chamber. Sort of like the relationship of the .38 Special to a .357 Magnum– just on a larger and more powerful scale."

I have a Norinco I'm thinking about converting to a .460

Yeah that was the reply I have gotten from several persons in the industry...

 

[fireball168]

I am looking at building a couple of AR Pistol Caliber Systems and am looking at .460 Rowland as opposed to .45 ACP...

That'll make it run quite a bit easier than a standard 45 ACP, provided you are going DI.

 

[jeremy]

That'll make it run quite a bit easier than a standard 45 ACP, provided you are going DI.

I am looking at running an RMW Xtreme Upper, and yes it is a DI Upper. I have had an Oly and was not a fan of it at all...

 

[the1kidd03]

The answer is a definite .... maybe. Per the folks at Rowland;

"The 460 Rowland case is 1/16 of an inch longer than the .45 ACP shell casing to prevent it from chambering in an unmodified .45 ACP gun, but in many models, the .45 ACP will still function in a 460 Rowland chamber. Sort of like the relationship of the .38 Special to a .357 Magnum– just on a larger and more powerful scale."

I have a Norinco I'm thinking about converting to a .460

I'm not familiar with the round itself and simply basing this idea off of the info presented here.......but this gap could cause a sufficient enough headspace issue to damage the weapon...it would be over time and probably not noticed until too late unlike if the headspace were in the "opposite direction" of the casing being longer

 

[AllenM]

I presume you have watched this video
[ame]http://www.youtube.com/watch?v=KdxvoH1LLXc[/ame]

 

[aijk]

I was thinking of doing this to one of my 1911's. Is there enough gain in power.

 

[jeremy]

I talked to Ron at RMW Xtreme the 460 Roland and the 45 ACP use a no go for now in the DI Uppers. I was told it is due to the differences in Gas.

 

[Hogwylde]

You CAN fire 45 ACP in the 460 Rowland, the question is.....is it SMART or SAFE?

The 460 Rowland has a longer case length and the cartridge headspaces on this. The 45ACP would be too short to properly headspace and would be held in place only by the tension of the extractor.

This would be similiar to having a 10mm and running 40S&W in it. Yea, it CAN be done...but you run into the same question....is it SMART or SAFE?

 

[jeremy]

You CAN fire 45 ACP in the 460 Rowland, the question is.....is it SMART or SAFE?

The 460 Rowland has a longer case length and the cartridge headspaces on this. The 45ACP would be too short to properly headspace and would be held in place only by the tension of the extractor.

This would be similiar to having a 10mm and running 40S&W in it. Yea, it CAN be done...but you run into the same question....is it SMART or SAFE?

Kinda like 7.62x51 through a 7.62x54...

 

[AllenM]

I don't think that it is unsafe maybe just sacrifice accuracy a little.
Clarks Custom guns have been selling the 1911 drop in kits for a long time and here is an FAQ from their site

Q: Can I still shoot 45ACP in my gun? If so, will it adversely affect accuracy?

A: Yes, you may shoot 45ACP in the 460 Kit. However, it is likely that you will experience some degree of accuracy loss shooting 45ACP in the 460 Rowland kit and we cannot guarantee functional reliability. The 1st reason is that you're counting on the extractor to hold the 45acp against the breech face. The 2nd reason is the spring is too heavy for the 45acp to cycle the slide..

If you are shooting a lower pressure round in a chamber that is designed for a high pressure round how would that be unsafe in this case?