[460 rowland]

:banghead:Does any body know,if you can convert a 45-auto to a 45-super,using the same barrel.I have seen some info on this either saying you can or can not do this.thank you

[rcmodel]

You can, maybe.

The "maybe" depends on whether or not your stock barrel has a marginal support feed ramp throat, cut to feed semi-wadcutter ammo and other wide nose bullet profiles.

Personally, I have never felt that the 1911 was a good platform for the .45Super conversion, or that the conversion was a good idea.

IMO: It way work for awhile, but eventually you will crack a slide or a frame.
The 1911 was never intended to handle a recoil impulse like that, and even with heavy springs and a recoil buffer, gun life will certainly be shortened.

Heres more:
http://www.acecustom45s.com/45super.htm

And more:
http://www.thehighroad.org/showthread.php?t=356935&highlight=cracked+frame

[460 rowland]

I just want to thank you rc modeler,for the info on the 45 super conversion.I already have a 460 roland drop in kit,on my springfield 1911 45 pistol.have roughly shot 2,ooo rounds through this conversion,and finding a lot of front slide up&down movement.No cracks as of yet,But defintely shortning pistol life.Also reload my own ammo&cast my own bullets for the 460 rowland,252-semi wadcutters,loading this with power pistol 6.1 grains of powder.take care :cuss:

[havoc7usmc]

If some one were to do a conversion to 45 super, would going to over sized firing pin stop help? i.e. increase dwell time ? tame recoil pulse a little bit ?
I was at one time thinking of building a 45 super but still a little leery about it.

[rcmodel]

I suppose it would help.
However, keep in mind that the 1911 was designed for a 230 grain bullet at 850 FPS.
That transltes to 368 ft/lb of energy.

The .45Super 230 grain load gives 735 ft/lb energy, and the 185 load gives 804 ft/lb.

No matter what you do, doubling, or more then doubling the energy produced over the design limit, is going to do bad things to the gun.

[havoc7usmc]

I think I'll just keep my stock, it hasn't failed me yet. Thanks for the info RC.