Not really. The .357 Model 10's would have stayed if they were up to the task of full time .357 Magnum. When it became obvious they weren't, another gun needed to replace it. The 520 would have been fine, but they couldn't wait 6 months and continue to keep the guns on the road. They took the 28-2 with the adjustable sights because there was no option. When the 681 came along, that solved all the problems and they went with that.