doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Newby SxS Double Lover

PSI vs. FPS is more than a "clerical" error. PIS(S) and UPS would be clerical or typographical . It is a substantial error. There are numerous loads that bump up to SAAMI maximum pressures that fall below 1200 fps. As for chamber lengthening .25" over 2.5" can be enough to blow chambers in some guns shooting modern loads with pressures not consistent with the gun's mfg. For instance, some Fox guns, especially 16 ga. Lengthening a double's chambers by a reputable smith who is capable of measuring wall thickness is one thing, but not all smiths are created the same. But see Sherman Bell's study of shooting 2.75" ammo out of short chambers. Pressures didn't increase substantially, but more than likely they weren't maximum SAAMI. Gil

gls,what is the point of your continuing to drone on here about psi vs fps...

the practice of safely opening chambers is long established and needs no defense...

My purpose of "droning" on is to prevent someone from blinding themselves with a burst chamber after listening to your torching advice...

nonsense...

You asked, I answered. I said I disagreed with part of your advice and said why. You called my opinions and observations untrue. Hard to see how my opinions and observations are untrue. I mentioned the facts of your biases and past comments. You were left sputtering, deflecting and trying to exit with egg on your face.

Someone has been a dick here and it hasn't been me.

BTW, you've also been a dick to GLS in this thread when he rightly pointed out a mistake you made. You should have said "Thanks Gil for pointing out my obvious error".

i'd prefer we get back to helping provide worthwhile advice to the OP.


My apologies Doug for this senseless diversion.

agreed, senseless...

watts ah matta...

you boys don wanna play no mo...

Well, that certainly was an interesting discussion on the pros and cons of chamber lengthening... a subject which has been debated here countless times in the past. I think it's prudent to give Ed the benefit of the doubt here, especially since he expressly said, gunsmith usually can safely open Sauer chambers to 2 3/4"...but still keep loads to under 1200 psi..

Ed obviously is depending on a competent gunsmith to do the job "safely", which would entail measuring the forcing cone area before and after lengthening any chambers. It is a job that can be screwed up, like just about anything. But it has been done safely and successfully many thousands of times. Also, Ed has frequently stated his opinions on minimum safe barrel wall thickness, including .090" at the forcing cones. In fact, just about every time Ed tells us his idea of minimum wall thicknesses, the Nutty Professor chimes in like Pavlov's Dumbest Dog, demanding that Ed provide measurements of the guns he is selling... even though he has said he'd never buy a gun from Ed. But he is a troll who simply hates Ed. He cries about members being driven away, but has no regrets about his own attempts to drive certain people away. Yet he now calls Ed a hypocrite! Funny stuff that makes this forum extra amusing if you pay attention to all of the games.


It seemed evident to me that ED's 1200psi remark was a simple typo or brain fart, and that he actually meant fps for velocity.


I tend to agree with eightbore. It's probably better and cheaper in the long run to leave the Sauer chambers as is, and use the savings to buy 2 1/2" low pressure loads.


There have also been countless discussions here about torch coloring, but I don't recall a single instance of that advice leading to either a chamber burst, or anyone blinding themselves. I suppose that statement may have also been either a typo, or a clerical error, or something. However, the Nutty Professor did actually blow up his Rock Island built Model of 1903 Springfield. And subsequent metallurgical analysis of that shattered action showed the probable cause as a single high pressure event... in other words, a reloading screw-up. But to this day, he refuses to admit the obvious, and blamed about everything except his reloads.

So it might be prudent to warn folks about taking any reloading advice from the Nutty Professor.

Hi there,

I found some Winchester AA Super Target Lite shells, 2-3/4 x 1145 fps, Federal Top Gun at 1180 fps, B&P Comp One at 1160, and a couple others. Unfortunately the smith at South Florida Shooting Center is only working when I am, so I will need to take a day off and make an appointment. On that point, there are many gunsmiths around, how do I find one competent on classic shotguns? 🤔