From your description you are getting inconsistent performance inside the target. The A-Max is a target bullet and that's probably why.
I'd move to the SST but the Interlock and Interbond would work too. Some of the FTX bullets will even work but you need to be careful, some of them are for levergun velocities and a .30-06 or .308 will probably make them splode at the deer's hide.
I'd move to the SST but the Interlock and Interbond would work too. Some of the FTX bullets will even work but you need to be careful, some of them are for levergun velocities and a .30-06 or .308 will probably make them splode at the deer's hide.