You might find this cmp forum posting useful-(you will also find a well versed individual that posts here as well)any one have stats data on a rebarrel ones blowing up ?
http://forums.thecmp.org/archive/index.php/t-8527.html
But to answer your question--the barrel generally was not the issue and bad rifles were rebarrelled either by the military which was scarce of them in WWI or by individuals post war. I have one that has a Hoffer Thompson 1903 receiver that was rebarrelled with a 1919 to .30-06 and apparently fired by someone. I have it as a wall hanger example of WWI firearms but the Hoffer Thompsons were made from REJECT low number Springfield receivers according to Brophy. Someone had an angel on their shoulder while firing it.
Private firearms accidents have no central database, including WISQUARS system by the CDC that specifies by make and model. Most of what we know of kabooms or other unsafe conditions of a particular model are either through internet postings, recalls, or lawsuits (think Remington for example).
The point that I am trying to make is that shooter grade military rifles had led hard lives, been through all sorts of adventures, and may have had amateur tinkering done to them such as welding, grinding on sears and triggers, rechambering, etc. that can render them suspect without expert appraisal by a well qualified gunsmith. In the past, some unscrupulous resellers (like Bannerman) created franken guns that strangely enough are collectible but not as shooters. Samco Global (another defunct company) sold some stuff that was excellent and other stuff that was downright dodgy. There are cast receiver National Ordnance 1903's that have a spectacularly bad record which I'm sure that Slamfire has a stash of kaboom pictures from. Rewelded Garand receivers, fire damaged rifles, restored drill rifles, DP rifles returned to firing condition, Kimber during bad times economically butchered a lot of 96 Mausers and put them out there in unsuitable cartridges and so on.
Caveat emptor--let the buyer beware.