Thanks for the reply Irish. I recall buying Wolf Match Target & Match Extra for use in my Anschutz 1611 based on advice picked up on German Salazar's "Florida Smallbore Shooting" forum back around 2000 or so, after trading a CMP H&R M12 for the 1611. Didn't seem to make a lot of difference what lot# of either you got at that time - everything I bought shot pretty well at both 50 & 100yds out of that rifle. But several years later, after buying a full case of Wolf Match Extra, I recall being pretty disappointed in the way it shot - not just in the 1611, but also in a CMP 52D & the first 40XB Hvy bbl I bought from them.
It was around that time - 2005-'06 - that I started buying some SK Match & Rifle Match, along with samples of Eley EPS & Tenex. Never did have much luck with the Eley stuff, compared to how well SK & better lots of Wolf shot in the 1611. A good lot of Wolf ME would clean the NRA 100yd smallbore target with irons if I didn't screw-up, although my X-counts wouldn't have won any medals in an actual smallbore match. I used the 1611 mostly as a trainer for my conventional prone HP rifles, all of which were stocked with Robertson H&H prone stocks, which I understand Ian Robertson modeled after the Anschutz stock. I got a lot of good out of that Anschutz rifle - and probably should've kept it. But a friend sent me a link to an auction for an Anschutz 2013/2011 on Gun Broker, which appeared NIB, and which came with several hundred dollars worth of Anschutz accessories, including a set of their top-of-the-line sights, with a rear diopter/polorized filter aperture. I won the auction with the minimum bid - guess no one else found this particular auction, or it would certainly have gone for considerably more than I paid for it. At any rate, I decided I couldn't justify keeping the 1611 after getting the 2011, so sold it to a good friend whom I'd just built a very nice prone rifle for in 6 Dasher, and who would benefit from having a good trainer.
So fast forward to this past year when I built the Stiller repeater, and sent a CMP 40X for the repeater conversion. For either training or PR match use, from what I've seen so far, the SK RM performs plenty good enough so that it's not the limiting factor. In fact, I just bought a case of it that is out-shooting everything else I've tried to date out of the Benchmark bbl on the 722-style 40X repeater, and which is also shooting very well in the Krieger on the 40XB that's headed for jelrod's shop next week. I haven't given up entirely on Center-X, as one of the samples from recent lots is showing a lot of consistency. If I can get just one more decent afternoon for testing with this lot, and if performs as well or better than it has so far, I'll be ordering some of it in quantity. But again, I'm too darned cheap to even try Midas+, at least until such time as I hit some sort of lottery jackpot...