I was in the same delimia as you. The Stevens center feed bolt spacing is 4.250. I measured it a jillion times and a jillion different ways. It always came up 4.250. I ordered a Choate tactical stock (the new style that looks similar to a McMillian) and it dropped right in with no problems. Its a heavy stock, but the rifle had a barrel replacement, so it was heavy anyway. So far I am pleased with the stock. As far as the other brands, buy at your own risk. JMO