OK, we're on the same page with everything, except. you're hanging an awful heavy barrel on an action that's not as strong as most.i know, you're bedding in front of the action a ways. my opinion is still the same. for the most possible accuracy, a block glued on the barrel in front of the receiver will give the best potential for accuracy. course i don't know if there are rules against this in your shooting platform. good luck, you definitely know what you're doing. let us know how big a hole it makes!