I've remained quiet on the double rifle front for several months, mainly out of embarrassment over the poor choices I have made. I've owned only 3 doubles, and only one out of three has been reliable. I've owned a B. Searcy in 470 NE, a Sabatti in 450-400 NE and a Chapuis in 9.3 x 74R. The first two let me down completely, especially the first one listed. Only the Chapuis, with thin-walled barrels that don't instill a lot of confidence, proved to be reliable and repeatable. I've since shed the first two, back to the manufacturer or importer, and ordered my 4th - a Chapuis in 450-400. Champlin Firearms warranty the Chapuis for life if ordered thru them, and the only other one they warranty like this is a Heym, which is excellent company to be in.
Since this thread concerns the Sabatti, I'll focus on that nightmare. I knew vaguely about the early reports of grinding out the rifling to regulate the barrels, but I knew little more about them. While visiting a Cabelas, I saw one in 450-400 that had a pachmayer decelerator pad and the regulating wedge extended beyond the muzzles. I studied the muzzles for evidence of the rifling being removed, but saw none. I quizzed the sales rep about why the regulating wedge extended beyond the muzzles (common in some makes, but not Sabatti) and the pachmayer decelerator pad, neither of which matched any other Sabatti in the store. He explained the bad rap Sabatti had obtained for grinding out rifling, and that now they are properly regulating the rifles and that this must be one that was properly regulated. I asked very specifically if this was a new rifle. He replied "yes". I then asked for the final tuning target. It showed less than 2" separation at 50 meters.
I purchased the rifle that evening, and I sincerely hoped it would perform. Even though I shoot left-handed, this right-handed rifle fit fine and for me, the stock dimensions felt perfect and the barrel thickness was impressive. The ejectors launched empties with authority, and the recoil was a non-event.
The performance, however, was unacceptable. I never shot more than 3 rounds in each barrel before allowing the gun to cool back down to ambient temperature. To get the best feel for performance, I eventually would shoot each barrel one time, then allow the rifle to cool to ambient temp. After 4 sessions of 10 rounds (5 thru each barrel, allowing the rifle to cool to ambient after shooting 1 round thru each barrel), the best 10 round composite group was slightly less than 8 inches at 50 yards, and this happened only once. The other 3 10-round groups sprayed well beyond 8 inches, and no 2-round group ever came close to the "final tuning target". All tests were done with Hornady factory loaded 400 grain ammo - the same ammo the gun was reportedly regulated with. During all tests, the gun only touched my shoulder and my hand on the forearm. The hand supporting the forearm rested in a tripod to ensure stability. I even tried cleaning, but this had the effect of making it worse until several fouling rounds were fired. The gun would then be somewhat repeatable for a few rounds (individual barrel repeatability, composite group still unacceptable), then it would become unrepeatable again.
It wasn't until one of these cleaning sessions that I noticed the rifling didn't extend to the end of barrel on a portion of the barrel circumference (both barrels). When completely clean of copper fouling, it was hard to see; but copper fouling made it obvious. It then became obvious why the regulating wedge extended beyond the muzzle - the muzzles had been cut back to remove obvious grinding marks, leaving little evidence until copper fouling showed what had been done.
Based on what I experienced, a full refund issued immediately
Whether Sabatti had anything to do with this pathetic attempt to hide a poor practice or not, I do not know.
If you do choose to go the Sabatti route, I would spend a considerable amount of time making sure the actual gun you buy has been regulated properly. As to how this should be accomplished, I don't know. I thought I could see no evidence of grinding, but it became obvious after some copper fouling. At least in my case, sales reps are not the answer, either. I have yet to see a new Sabatti with a pachmayer decelerator pad ....
Maybe it is like the old saying ... if it's too good to be true, it probably is.