I apologize if it's been asked, my feeble search skills didn't turn up anything. Can I fire 30 super carry in a single 7?
Single 7 and 30 super carry
- Thread starter NC FNS
- Start date
Help Support Ruger Forum:
NikA
Buckeye
No. .30 SC is a mildly tapered cartridge (for feeding in semi-autos), the .327 chamber has straight walls.
You can determine this from the SAAMI cartridge and chamber drawings.
You can determine this from the SAAMI cartridge and chamber drawings.
Thanks, NikA
JCK
Single-Sixer
Actually, the taper of the .30SC is so small as to be unnoticeable.
The real problem is that there is no rim to stop the case from falling into the chamber past the point where it could be struck by the firing pin.
In other words, the .30SC headspaces on the case mouth, the .327 headspaces on the case rim.
My reloaded .30SC are sized in the same sizer die as the .327. Ditto, .32acp, .32s&w, .32S&WL, .32H&R.
Top velocities are actually a tad lower than .32H&R as there is somewhat less case capacity.
For instance, the .32H&R does quite well with #2400, Lil'Gun, and H110. The .30SC won't hold enough of either to generate enough velocity/recoil energy to cycle the action with a 100gr bullet. On the other hand, HP38 exceeds working pressures before sufficient velocity is obtained.
Best powders I've tried so far are AAC#7, LongShot, and ACC#5, in that order. #7 comes within 35-50fps of matching Federal 100gr HST.
I doubt the .30SC will get much traction. I'm still sitting on my S&W Super 9, with a .356TSW barrel. Last one I saw on GunBroker went for more than $4000.00. Besides, my .30SC (Sheild EZ) is a tack driver... and is a treat to shoot.
I recently sold my Ruger Sec-6. I bought it for $125.00 off a vendor table at the 2000 NPSC. I got $600 for it. Seems last century "trash" is now desirable "unobtanium"...
And, BTW, I've been around a while. Just had to re-register as my old email address is no longer usable.
The real problem is that there is no rim to stop the case from falling into the chamber past the point where it could be struck by the firing pin.
In other words, the .30SC headspaces on the case mouth, the .327 headspaces on the case rim.
My reloaded .30SC are sized in the same sizer die as the .327. Ditto, .32acp, .32s&w, .32S&WL, .32H&R.
Top velocities are actually a tad lower than .32H&R as there is somewhat less case capacity.
For instance, the .32H&R does quite well with #2400, Lil'Gun, and H110. The .30SC won't hold enough of either to generate enough velocity/recoil energy to cycle the action with a 100gr bullet. On the other hand, HP38 exceeds working pressures before sufficient velocity is obtained.
Best powders I've tried so far are AAC#7, LongShot, and ACC#5, in that order. #7 comes within 35-50fps of matching Federal 100gr HST.
I doubt the .30SC will get much traction. I'm still sitting on my S&W Super 9, with a .356TSW barrel. Last one I saw on GunBroker went for more than $4000.00. Besides, my .30SC (Sheild EZ) is a tack driver... and is a treat to shoot.
I recently sold my Ruger Sec-6. I bought it for $125.00 off a vendor table at the 2000 NPSC. I got $600 for it. Seems last century "trash" is now desirable "unobtanium"...
And, BTW, I've been around a while. Just had to re-register as my old email address is no longer usable.
Last edited:
NikA
Buckeye
.30 Super Carry has 20 5-6 thousandths of taper; all the other cartridges you mention have 0-3 thousandths. That's not "unnoticeable", and although you can certainly size the case down to fit in the .32/.327 chamber, a SAAMI-spec .30SC case should not fit.
Sizing in the same sizing die as the other .32 cartridges is not producing SAAMI-spec ammunition.
Edited: memory was off on the taper of the.30SC in SAAMI drawings.
Sizing in the same sizing die as the other .32 cartridges is not producing SAAMI-spec ammunition.
Edited: memory was off on the taper of the.30SC in SAAMI drawings.
Last edited:
JCK
Single-Sixer
SAAMI only applies to firearms chambers and loaded ammo by participating manufacturers.
Given the normal variation in manufacturing tolerances, there are generous allowances,
Your suppositions are not my OBSERVATIONS.
A fired .30SC (from MY .30SC) WILL NOT even fit into the cylinder of my Ruger Single-7. However, a factory loaded Federal .30SC will hang on the rim of the S-7 chamber. The rim however is only 0.0025" larger than the case ahead of the extractor groove.
A FIRED .30SC case will drop into cylinder of my Taurus M76 in .32H&H until it is arrested by the throat.
The loaded Federal.30SC is larger at the case mouth than ahead of the extractor groove because of the seated bullet.
My OBSERVATIONS of MY pistol and MY ammo. YRMV.
Given the normal variation in manufacturing tolerances, there are generous allowances,
Your suppositions are not my OBSERVATIONS.
A fired .30SC (from MY .30SC) WILL NOT even fit into the cylinder of my Ruger Single-7. However, a factory loaded Federal .30SC will hang on the rim of the S-7 chamber. The rim however is only 0.0025" larger than the case ahead of the extractor groove.
A FIRED .30SC case will drop into cylinder of my Taurus M76 in .32H&H until it is arrested by the throat.
The loaded Federal.30SC is larger at the case mouth than ahead of the extractor groove because of the seated bullet.
My OBSERVATIONS of MY pistol and MY ammo. YRMV.
Last edited:
