Steel targets for ready ups

[LimaOscarAlpha]

So I recently(by that I mean bought a few months ago) purchased a steel spinner 4 inch dis on the bottom 2-3 inch top for ready ups, Do all double blast if you courios, after 25 rounds of 110 spire points, 17gr h110 I found the support had been impacted by my poor marksmanship total of 3 impacts. Now this target is rated to handle up to 30-06 my little 300 sac blk is no where near the high end of that spectrum, anywaysthe vertical support bent and the lower horizontal support bent and broke at a weld seam.
This just won't do, any sudgestions or should I just go get a bowling pin lol?