I used a milled-clean salvaged pecan dresser drawer front, some plywood for the base, and oak for a knob to make myself an adjustable front rifle rest that lets me use the artillery hold with my springers. Broom handle drilled through and inserted in the section of pool noodle, on a 5/16 inch bolt axle. The oak knob has a captured nut that tightens the carriage bolt firmly when I have the height set. Best thing was the price which was free. I had all materials there in my wife's and my little wood crafting shop. I stippled the knob with the Foredom and a burr for good hand traction. I later added self-adhesive felt bumpers to the inside of the forks, and a fender washer under the carriage bolt head clamping the pieces together. Works great for me. And again, the price was right! Thank you for looking.
Don.