I agree with the OP. I've owned seven customs from various makers and have had "issues" with four of them.
As to Blasers, my R93 has multiple barrels. The .30/06 and 9.3 x 62 barrels produce consistent half inch groups with factory Federal brand ammunition. The .300, .338 and .375 barrels exhibit "average" (1.5 ") accuracy.
Factory rifles have tended to perform well for me right out of the box. In recent years I've only had one that could be classified as a "dud".
The advantage of a custom rifle is that it is assumed you get the exact features and specifications that you want and hopefully, top quality components and workmanship. That assumption sometimes lack validity.
