If that UltraMatch was the stuff with the little dimple on the bottom of the case, I can verify that it is indeed very good ammo. Basically, you need a high-quality target-grade rifle/pistol to really appreciate the accuracy it displays; blasting it up to poke holes in soft-drink cans would be a horrible waste.
Originally Posted by new guy
I picked up 300 rounds of that load at a going-out-of-business sale about 10 years ago, and I just used up the last of it last year. Whenever I had a rimfire I wanted to check for accuracy, I dug out 10-20 rounds of that stuff and shot a few groups off a rest. Always shot the best group of any ammo in whatever rifle/pistol I tried it in.
"Placement is power" -- seen in an article by Stephen A. Camp
(RIP, Mr. Camp; you will be remembered, and missed)