.45 acp single action cylinders gimmick or godsend

[TTv2]

It's a godsend for non reloaders, neat for those who reload. Since it's mostly Ruger single actions that people are familiar with (I know Magnum Research BFR can have a spare cylinder made for it) the benefit for the non reloader is to have a powerful revolver capable of shooting hot .45 Colt ammo in a revolver for when they need or feel they need it, but also have a cheaper option for pracrice in the .45 ACP.

I reload, don't really have a need for a .45 ACP single action. If anything what I could use rn is a 9mm revolver cuz the ammo is so available and not terribly pricey compared to other centerfire calibers.

 

[The Happy Kaboomer]

I prefer dedicated caliber guns. I have a plethoria of 45LC's and 45 ACP revolvers..........Would be a PIA to have to re-zero at each cylinder change.

 

[.45Coltguy]

I prefer dedicated caliber guns. I have a plethoria of 45LC's and 45 ACP revolvers..........Would be a PIA to have to re-zero at each cylinder change.

Don't seem to have that issue with my Pietta in .45 Colt/.45 ACP. .45 Colt with 250gr coated rnfp or .45 ACP with 230gr LRN loaded with preferred powder, shoots to damn close POA. It's all in the load.

 

[Jim Watson]

My SAA .44 Special 240 shoots to the same POI with its .44-40-200 cylinder with 7.5" barrel.
During my brief flirtation with a 4.75" barrel, it didn't.

 

[TTv2]

POI shifts are a reason why I lost interest in multiple chamberings in one gun and also chamber adapters for shotguns. Now, some work better than others, but in general I find the bigger the bore, the better it's going to work.

For my .45 Colt/ACP Redhawk, it does just fine with a 225gr LFN and roll crimp .45 ACP handload, but with 230gr ball and taper crimp... not so much.

About the only revolver out there now that I really want to try that has two cylinders is a .357 and 9mm. I'm sure there's a 9mm liad out there that will not be too far from the POA.

 

[Seedy Character]

POI shifts are a reason why I lost interest in multiple chamberings in one gun and also chamber adapters for shotguns. Now, some work better than others, but in general I find the bigger the bore, the better it's going to work.

For my .45 Colt/ACP Redhawk, it does just fine with a 225gr LFN and roll crimp .45 ACP handload, but with 230gr ball and taper crimp... not so much.

About the only revolver out there now that I really want to try that has two cylinders is a .357 and 9mm. I'm sure there's a 9mm liad out there that will not be too far from the POA.

POI is errant on 9mm.
Putting a .355 bullet down a .358 barrel is not conducive to accuracy.

 

[TTv2]

POI is errant on 9mm.
Putting a .355 bullet down a .358 barrel is not conducive to accuracy.

How do you know all groove diameters will be .358?

 

[Seedy Character]

Measure them

 

[Jim Watson]

SAAMI specification for both 9mm P and .38 Special is .355" groove diameter, but with a huge +.004" tolerance.
US 9mm barrels seem to be held closer to spec, imports can run large, as do most .38s except for old Colts.
I think matchup for both rounds in a caliber convertible gun is a matter of luck.

 

[Rexster]

None of the poll choices are an ideal response, in my case, so, I will type “Other,” here.

.45 ACP ammo is more generally available, than .45 Colt ammo, so, a .45 ACP cylinder does make plenty of sense. I have not found .45 Colt ammo to be “vaporware,” but it is quote expensive. I can get .45 Colt ammo with wide, flat noses, and even full wadcutters, so, do not “prefer” .45 ACP.

I have a Ruger Blackhawk, with 9mm and .357 cylinders, which allows me to train even less expensively that with .45 ACP ammo. I have a Ruger Bisley, with .45 Colt and .45 ACP cylinders, but it has been, uh, requisitioned, by The Missus, so, the .357/9mm Blackhawk is my lower-cost training sixgun.