After posting the SR1911 10MM Unboxing video
the emails started to come in asking about chamber support.
Being curious myself I decided to compare 4 10MM 1911's,
Colt Delta Elite
Ruger SR1911
Para Elite Hunter
Kimber Camp Guard 10
Here in this video
I do not have the best of camera gear but hope this helps.
That Ruger looks to have about the same support as the KKM for my G40.
Should be fine with any factory load or reload up to and including Hornadys very warm data, provided the lockup is solid and timed right.
I should have mentioned I have fired Corbon and Underwood in the Colt and did not see bulged brass so I suspect the Ruger will not have any issues at all. I did not think about it until after the video but I should have mentioned they all are safe to shoot with factory ammo even with Corbon and Underwood which are known to be on the hot side.
The Ruger also looks like it has the same chamber support as my 2011 G20SF. I have fired the hottest loads from Underwood and Buffalo Bore through that gun without an issue.
To be quite honest, the Ruger and Para look the same to me on the video. Perhaps the black to stainless barrel color makes it harder to tell.
I was reluctant to say it earlier... But I might as well since it is true.
The Remington/Para caught my eye above all. Several years ago now I swore I'd never give Remington another nickel of my money for anything, 5 new rifles in a row, all with problems that were not fixed to my satisfaction, on top of what they did to Marlin early on.... All that just ruined me on Remington after being a loyal and lifelong customer up to that point.
But, for all they got wrong then, they appear to have gotten the 10mm right...
Kimber struck me the same to be honest, to me they've always been pretty to look at but often problematic in operation... Rifles and pistols... But again, I like their approach to the 10mm in regards to chamber cut.
I don't say any of that to step on anybody's toes that is a Kimber or Remington fan... Whether it sounds like it or not, coming from me.... That is a compliment to them both.
Mr. Revolverguy ... thanks.
I think you did an excellent job of providing comparison and commentary regarding your chamber support findings.
If by any chance you find yourself with a single 10mm loaded round, the Ruger and the Kimber barrels and a camera again ... I'd love to see the same round in both of the barrels. Unless you are the most detail oriented loader I know - the cases of two rounds are not identical. These barrels index on the case mouth. Without measurements on the cases shown, I could learn more if you show me what the same cartridge looks like dropped into the comparison barrels.
Most interesting to me is an unmentioned observation. The ramp profiles on the Ruger and Kimber are different enough that I wonder if these barrels will feed if you swap frames. The Ruger and Kimber are both Wilson/Nowlin ramps but they look dramatically different.
Dred,
I will give it a try sir. What you should know is this was twice fired brass that I trimmed by hand on a RCBS trimmer. I was planning to fire the ammo across the chronograph and I wanted everything to be as close in spec as possible. I don't usually trim pistol brass but for the up coming video for consistency I did trim 50 pieces of brass, and it just reminded me why I never trim pistol brass LOL.
Should I take one piece of brass measure it then loaded it and drop that one round in each barrel?
Wow ... trimmed pistol brass ... wow. That makes your visuals more interesting. Pretty much satisfied my curiosity.
You are telling my what a pain ;D Though I like your idea and still might follow through it. Gives me somethign to do LOL not like I need more but being at my reloading bench is therapeutic for me :D
Thanks for your video showing the chambers with cartridges in them for case support...
10mm brass much like most straight wall pistol brass doesn't get longer, in most cases it will shorten some.
However having the patience to trim them to exacting specs can show some better results.
Now with respect to the Chamber support, shorter brass will show more chamber support as they go inside the chamber deeper.
If you really want to see the true chamber support, one would need to have the case head flush with the chamber hood to see just how much exposed areas are lacking support. Why do I say this? Some 10mm chambers by SAAMI specs can be 0.9920" to 1.004" deep.
Brass cases are all over the place but 0.9920" to -0.0100" or 0.9910" short. Many of us have shot the 40S&W ammo from some of our 10mm pistols and those are shorter still.
The case slams back against the breech face when shot so the support remains with the casing against the breech face. However if the slide starts to move, that can also increase the lack of chamber support...
In short everything is relative when the pressure is on!