One advantage to belonging a club is some of the equipment they have available.
Checked out the Ransom rest and tested my SW929, Glock and SW686 loads. I was fortunate in that the club had inserts for these. What I determined is my 125gr loads for my 686's are just fine. 3-4" groups at 50yds. 124gr 9mm loads pretty much suck with both the Glock and the revolver. 147gr loads whether commercial ammo or my handloads works much better.
The club has a major I beam planted in the ground and a fixed target stand, lined up with it at 50yds. The Ransom rest only has a limited amount of lateral movement. It is a little tricky getting a moon clip into the cylinder, but a little jostling and it'll go in. With the G17, the magazine is a tight fit because the rest is squeezing the grip.

If you're thinking of buying one, the rest w/ lateral adjustment base is $582 and inserts are about $60 for each model gun.