Cor Bon 400 in Sig Sauer P220....anyone?

[Geno929]

In my wonderful, early eighties, West German, Sig Sauer P220 in 45 ACP, I have the additional barrel for Cor Bon 400. Got some 165gr & 135gr Cor Bon ammo.
What's the expiernced shooters take on this ammo in the Sig?

 

[GarrettJ]

I can't comment on how it does in a Sig, but in general I found the cartridge neck to short to provide adequate bullet tension. In a 1911, chambering a round would sometimes push the bullet back into the case, increasing pressure dramatically. This was the case whether shooting factory ammo or reloads. Sometimes the bullet pushed in, and sometimes not. It made for very inconsistent performance. I ended up selling the barrel, dies and brass.

 

[Jeff62]

If I had a 220, you bet. I shoot it from a 1911.
However, if I didn’t reload I doubt I would be a fan.

 

[riverats]

Always late to the dance, I stumbled onto a Bar-Sto .400 barrel just this past summer. The barrel had been fitted for a W. German 220, which has a wider locking block insert than that on my 220R, so both were sent up to Bar-Sto for a refit.

Back in the .400’s heyday, most folks preferred lighter (< 165gr.) 40/10mm bullets, as they were supposedly more accurate than the heavier bullets/rounds.

Those factory .400 Cor-Bon rounds you picked up are quite warm! Personally, and this isn’t based upon anything other than the fact that I don’t want to beat up the 220R’s alloy frame, I reload my .400 Cor-Bon (135 & 150gr. Nosler) somewhat softer than those factory offerings. Not too surprising, the 220R is every bit as accurate with .400 Cor-Bons as it is with .45ACPs. Oh yea, I did pick up a bullet cannelure tool to offset possible bullet set-back issues & I like run a Wolff 22# spring with the .400s.

I look forward to reading about your experiences with the .400 Cor-Bon!

 

[Geno929]

Always late to the dance, I stumbled onto a Bar-Sto .400 barrel just this past summer. The barrel had been fitted for a W. German 220, which has a wider locking block insert than that on my 220R, so both were sent up to Bar-Sto for a refit.

Back in the .400’s heyday, most folks preferred lighter (< 165gr.) 40/10mm bullets, as they were supposedly more accurate than the heavier bullets/rounds.

Those factory .400 Cor-Bon rounds you picked up are quite warm! Personally, and this isn’t based upon anything other than the fact that I don’t want to beat up the 220R’s alloy frame, I reload my .400 Cor-Bon (135 & 150gr. Nosler) somewhat softer than those factory offerings. Not too surprising, the 220R is every bit as accurate with .400 Cor-Bons as it is with .45ACPs. Oh yea, I did pick up a bullet cannelure tool to offset possible bullet set-back issues & I like run a Wolff 22# spring with the .400s.

I look forward to reading about your experiences with the .400 Cor-Bon!

Thanks for the reply. Those hot Cor Bon loads is one of the reasons I don't shoot it in my P220 more often. They are fun though! Especially the 135gr loads on a pumpkin or watermelon. I think I'll stick with my P220 chambered in .45 ACP. Cheers!

 

[Zaydok Allen]

Honestly my Sig P220s in 10mm do everything I need a 40 caliber bullet to do, and there's no bottleneck to mess with when loading.

10mm for me.

 

[riverats]

Thanks for the reply. Those hot Cor Bon loads is one of the reasons I don't shoot it in my P220 more often. They are fun though! Especially the 135gr loads on a pumpkin or watermelon. I think I'll stick with my P220 chambered in .45 ACP. Cheers!

You’re welcome & yessir, I’d have no qualms about running full-house .400s through a Glock 21, 30 or a low-end 1911, but there’s just something about doing that to a Sig P220.
Again, I’m not comfortable hot rodding the 220R’s alloy frame & even when reloading .357 Sig range rounds, I tend to go softer with the German P229, than I do for the Exeter, ss-framed P226R.

Honestly my Sig P220s in 10mm do everything I need a 40 caliber bullet to do, and there's no bottleneck to mess with when loading.
10mm for me.

I’ve always had a fascination with bottlenecked handgun rounds & in fact, my intro to the .357 Sig came some time back in the mid-90s after picking up a spent case at a local range. From there, it was on to the 7.62x25, then the .32-20 & most recently, the .400.

I didn’t pursue the .400 because of ballistics, as I also have various 10mms, but rather because I enjoy tinkering around the reloading bench, fashioning 7.62 Tok cases out of .223 brass, .400 cases out of .45 ACP SP brass, etc., etc...

 

[Zaydok Allen]

I’ve always had a fascination with bottlenecked handgun rounds & in fact, my intro to the .357 Sig came some time back in the mid-90s after picking up a spent case at a local range.

Sure, they can do some interesting things with a bottlenecked cartridge. I guess what I find most interesting is the ability to cram a high velocity cartridge into a frame sized for 9mm and 40 S&W length cartridges. I'm a larger guy though so the cartridge length, and the associated larger frame of a 45 acp, 10mm, or 38 Super are a nonissue for me. I shoot larger guns better because my hands are larger. So it's just individual for me.

I didn’t pursue the .400 because of ballistics, as I also have various 10mms, but rather because I enjoy tinkering around the reloading bench, fashioning 7.62 Tok cases out of .223 brass, .400 cases out of .45 ACP SP brass, etc., etc...

Yep I can see how a true tinkerer would love it. I've reloaded many thousands of rounds, but I am still relatively novice level. I can load what I shoot, and do it well, but I'm very cautious. Some day I may get braver. Some day...……

 

[tommy.duncan]

Hope it's not too far off topic...
I have a Glock 21 that I converted to 400 corbon. It works much better with 10 round mags then the 13 rounders. I really like shooting 400 corbon.
I would love to shoot a P220 in 400 corbon!! I have 2 in 10mm and 2 in 45acp, maybe it's time for P220 #5!!

I have shot factory and reloaded ammo. I would never carry it for defensive purposes but it is a "hoot" to shoot.

Chasing the brass is really fun!!

I bought a 4.25" 1911 barrel in 400 orbon for a future project!!
I have 357 sig, 9x25 dillon, and 400 corbon pistols. I like wildcats!!