Here is something else to consider, or at least it was a deciding factor in helping me choose JJ or sinclair,...I called Sinclair first, there 25 back ordered right now (1/13/12) I ask the counterman who do I need to talk to about the Sinclair,...he said I am,..so I ask how smooth is the windage nob and how much back lash does it have, he said it's real smooth I am playing with it right now, okay how much back lash,...?...backlash?? Johns answer was yes it is smooth,..nothing like you have ever used, I don't use bolts we build all our own stuff on these rests,...Backlash? he said undetectable, virtually none!
I ask the Sinclair man,...how does your rest compare to the JJ he said there comparable, I said how so,..he said you know there both high quality precision built rests but we don't carry the JJ any more but I think you would like this one.
JJ answer was there is no comparison, I said well I mea....he said again NO COMPARISON my rests are all hand ground hand machined precision built and if I had the two side by side I would immediately see what he meant, and,...and John has them in stock!! By the time you buy the Sinclair ready to shoot ( have to buy a bag) your just a few dollars away from a JJ, and the JJ comes ready to use! for me this was a definite tie breaker. Talking to the guy at Sinclair, real nice guy but he was trying to sell someone elses idea, JJ new exactly what he was talking about and directly answered my questions with not one I don't know, it was just a No Brainer for me! I am sure that the Sinclair is a nice rest probably far above my Caldwell but I feel, I don't have it in my hands yet but I fell the JJ is going to be just that much better than the Sinclair, I hope this may help some. Ken Fulghum of Randolf Machine makes a rest that I bet is in the ball park with Johns, and he is also very very nice to talk to and full of info.
Wayne.