10mm case support photos

[ATLDave]

EDIT: Links to posts in this thread for particular guns/barrels:

Barsto aftermarket 1911 barrel: https://www.thehighroad.org/index.php?threads/10mm-case-support-photos.844352/#post-10982584

Glock 20 factory barrel: https://www.thehighroad.org/index.php?threads/10mm-case-support-photos.844352/#post-10983226

Glock 20 KKM Match aftermarket barrel: https://www.thehighroad.org/index.php?threads/10mm-case-support-photos.844352/#post-10983226

Rock Island Armory Tac II: https://www.thehighroad.org/index.php?threads/10mm-case-support-photos.844352/#post-10982640

Ruger SR1911 10: https://www.thehighroad.org/index.php?threads/10mm-case-support-photos.844352/#post-10983636 and https://www.thehighroad.org/index.php?threads/10mm-case-support-photos.844352/#post-10984056

Sig P220: https://www.thehighroad.org/index.php?threads/10mm-case-support-photos.844352/#post-10983555

Smith & Wesson 610 Revolver: https://www.thehighroad.org/index.php?threads/10mm-case-support-photos.844352/#post-10983869

Tanfoglio / Witness Elite Match: You're at it, scroll down in this post.





Case support is a pretty significant topic among people shooting 10mm autos. Running at even higher pressures than .40 (a cartridge known for bulging dramatically/frighteningly in guns with little case support), 10mms can pick up some pretty scary bulges and even failures. In another thread ( https://www.thehighroad.org/index.php?threads/ria-10mm-a-brief-review.844300/ ) reviewing an RIA 10mm, a poster asked for photos of a fired case next to an unfired round and a picture of a cartridge in the chamber.

I don't have that for an RIA 10mm, but I do have that for a EAA Witness/Tanfoglio Elite Match 10mm. I thought those pics might be off-topic for the other thread; but if I started a new thread, maybe those with other 10mm autos can take and post equivalent/similar pictures. If other contribute, this might be a useful resource for people contemplating the purchase of a 10mm who want to consider case support.

The photos below show 10mm rounds that are/were loaded with 13.2 grains of AA#9 behind a 180 grain Speer Gold Dot JHP. Western/Accurate Powders list 13.5 as the max for AA#9 behind 180 grain JHP's, so these are pretty hot - just a couple tenths off of book max. These definitely draw the attention of people at a range where everyone else is shooting service-caliber stuff... I think they rate as "real" 10mm. Starline brass (not new in this case) and CCI non-magnum LPP's.

Here is a fired case next to a loaded one. Any bulging is not apparent. This is probably why I routinely get many, many loadings out of this Starline brass... it's not being stretched that much in my gun.

Getting a photograph of the portion of the case base exposed by the feed ramp is not easy. The case is basically buried in the barrel:

Here's my best attempt at photographing the tiny sliver of case that sits above the feed ramp:

I'd love it if folks with other 10mm's would do the same. I think most 10mm's being made these days have adequate-to-excellent case support, and I'd love to give people thinking about getting one some solid, current information about what they can expect.

 

[WestKentucky]

Thank you. I will try to dig up the photos I took of the badly bulged cases from the Colt Delta Elite. It’s bad enough that I sold my Delta at a loss after a couple conversations with Colt who seem to think that a high pressure pistol with an unsupported chamber is not dangerous, and is properly engineered.

Found my thread which contains multiple pictures.
https://www.thehighroad.org/index.php?threads/delta-elite-buldge.798901/

 

[ATLDave]

I will never understand that mentality. If you’ve got brass dramatically bubbling, you’re way closer to a blow-out than I ever want to be.

 

[harrygunner]

I don't reload (yet) and often give away my fired brass. They say the cases look pretty much unfired. Here are photos of fired cases and the support provided by the Barsto barrel in my 10mm 1911.


The rounds were Underwood and Double Tap 180gr ammo.

 

[ATLDave]

Thanks for contributing!

 

[harrygunner]

Here's a quick photo I just took showing support of my RIA 10mm Tac II barrel. It's pretty close to the Barsto support.

I like the RIA for the forest since it feeds Underwood's fat 220gr hardcast ammo perfectly.

 

[cheygriz]

I don't reload (yet) and often give away my fired brass. They say the cases look pretty much unfired. Here are photos of fired cases and the support provided by the Barsto barrel in my 10mm 1911.
View attachment 814254 View attachment 814255

The rounds were Underwood and Double Tap 180gr ammo.

I would expect nothing less from a BarSto barrel.

That's why I have three of them!

 

[Texas10mm]

I'll break out my three and get some pics.

 

[MTMilitiaman]

Gen III Glock 20 with stock length KKM Precision barrel (SS, left) and factory barrel (black, right):



Round is a factory 200 gr XTP load from Grizzly Cartridge Co.

The most notable difference is the chamber tolerances. The factory Glock barrel has a much looser chamber; you can drop the round into the chamber and it will drop in and out freely whereas the KKM's chamber it tight enough that you almost have to tap the round to seat it fully. And then you can flip the KKM over and shake it and the round stays in the chamber.

 

[Zaydok Allen]

P220 10mm

Round is a reloaded Xtreme case with a Berry's 180 gr Platted FP over 13.3 gr of AA#9.

Never had a bulged case, and chamber support seems excellent.


Unfortunately this gun does beat up your brass pretty badly. This one is twice shot Sig brass.

Usually the resizing die takes care of it and they take a new bullet no problem, but you do lose one here and there.

A work in progress.

 

[BC17A]

Here's my Ruger SR1911 10mm barrel. Brass is perfect and resized like new but it's low pressure Magtech.

 

[roscoe]

This is a great thread. Please keep posting photos!

 

[Zaydok Allen]

How about the 10mm XDm? @TomJ @Havok7416

@tommy.duncan , I imagine you have a few dozen contributions for this thread .

 

[Havok7416]

I'll have to try some brass in my chamber, but I'm pretty sure the XDm has good case support.

 

[TomJ]

How about the 10mm XDm? @TomJ @Havok7416

@tommy.duncan , I imagine you have a few dozen contributions for this thread .

I’ll post pictures after work.

 

[JR24]

I'll see if I cant snap some pictures of my RIA 10mm when the kids nap today.

If they nap.

Else I should have time tomorrow.

 

[mcb]

Here is some proper 10mm Auto chamber support! My brass comes out in perfect shape, no bulges and no dents and in little piles of six.


With Moonclip...


or without. Not that I would forgo the opportunity to use moonclips but simple for better visualization of the case support.

 

[sparkyv]

SR1911 well supported. I've not had any bulged cases.

 

[Zaydok Allen]

SR1911 well supported. I've not had any bulged cases.

View attachment 814492

What's going on with your feed ramp there? It looks pretty chewed up on the end.

 

[JR24]

RIA tactical 10mm.

Starline brass, twice fired (on the empty)

200 gr XTP over 12.0 AA#9

No bulges, very, very accurate.

 

[sparkyv]

What's going on with your feed ramp there? It looks pretty chewed up on the end.

Not sure, but it's actually behind/below the feed ramp surface proper. I noticed it a few weeks ago. It does not affect performance whatsoever. I almost smoothed it off, but decided against it as there are no issues whatsoever...but I'll be watching it closely.

I KNEW someone would notice!

 

[Zaydok Allen]

Not sure, but it's actually behind/below the feed ramp surface proper. I noticed it a few weeks ago. It does not affect performance whatsoever. I almost smoothed it off, but decided against it as there are no issues whatsoever...but I'll be watching it closely.

I KNEW someone would notice!

Just showing concern for my fellow shooter.

 

[ATLDave]

I think that there are a few brands/types of 1911 magazines known to interfere with/bang into ramped barrels. Any chance that you're using one of those old-style mags, sparkyv?

 

[sparkyv]

Just showing concern for my fellow shooter.

Much appreciated, 460Shooter!

I have several images so I can track it over time and use.

 

[sparkyv]

Good tip. I'm using 2 factory and two by Metalform which resemble the factory mags. I'll test them to see if that is the cause.