I have a number of factory sporters that I have been telling myself I will have built into precision trainers "one day." CZ452 Varminter, Remington 541THB, Brno Model 1, Remington 540 ... and there have been others, Norinco NS522 comes to mind. But with the factory offerings today -- CZ455 tacticool and PT, Savages offerings, RPRR, Vudoo, etc. Does it even make sense to build an old sporter into a PT, either cost-wise or considering performance? In am thinking of things like feeding from the magazine, extraction, etc. The manufacturers generally have it well sorted out, right? So, are folks here still buying sporters and having custom guns built?