I shot five of them in a .180 FB chamber ,.005 off touch , and used a slightly larger than I should have load . No damage was done to the idiot trigger-puller , ( me ) and no damage to the rifle , but that's a serious accident looking for someplace to happen . As has been said in several threads on the subject , a FB of over .220 minimum is needed for these long-assed bullets .
Where did the boat tail/bearing surface Junction sit in relation to the case neck? It may be that it's still workable with a more modest charge weight.