Jack,
I just bought myself a pistol rest for $10.50 at Gart Sports. It is from a company by the name of MTM. Their website is:
http://www.mtmcase-gard.com
It allows the user to easily adjust to 20 different positions based on handgun size. It features a heavily rubber padded "V" that you rest the barrel in. It has allowed me to test my reloads and factory .45 quite well. Definitely worth the price. Check it out.