One would hope that purchasing at the Perezzi level would get you a reamer not on it's 649th tube, but, the only guarantee is death and taxes.
While we are on "minor improvements" Dr. Sane, lets forget, for a moment, the advancements in petrochemical engineering that gave us plastic hulls and wads-do 'ya think a turn-o-the-century P gun would have identical chamber dimensions to one produced, say, yesterday?
I think not. I've seen enough Winchester SX2s to know that the bore and choke dimensions aren't going to be identicle to your model 12.
Let's assume there is a reason for this. It's OK to admit you don't know why.
Best,
Ted
I'm sure there have been some dimensional fluctuations over the last 120 or so years but my take would be that they were, if intentional, market hype just like today or inconsequential. I'll omit chamber length since that really has no bearing and was for other reasons anyway. And the simple fact the "modern" dimensioned ammo will work quite well in guns from the turn of the last century is notable.
As you correctly note the REAL advancements have been in the bits and pieces shoved into the gun and not the dimensional standards to which the guns are built. That does not negate the simple fact that guns have been built to a dimensional standard that has not changed in any significant way whatsoever for that whole time. I cannot attest to the Perazzis at that time depth since they did not exist then, but I would suspect that the likelihood of elderly Berettas, Purdys, Greeners, etc., being dimensioned similarly would be quite high.
I mean, it's a (hopefully) straight round tube and the choke area is concentric to the rest of the tube. Admittedly the quality production of such a device does potentially pose some difficulties but the concept is about as complex as a rock.
have a day
Dr.WtS
PS - the only comment that comes to mind on the topic of long cones reducing pressure when people are too stupid to use the correct ammo is DUH! The pressure spike reduction would have to be marginal, but an effectively longer chamber is a longer chamber no matter how you may construe it.
