Thanks everybody for the replies to my question and I apologize to (pastorp) for leaving out the simple minded! I don't consider myself as an expert reloader or even close for that fact but I do have some experience (15yrs) and want to get more into wildcatting. The load that I did find for the 264RLB was 33gr. of R17 @2600fps with the 130gr. swift but no barrel length given. If it was 26in then that would put it right behind the 6.5 Bullberry imp with better brass and an easier case to form correct? My original question should have been if the original contender frame would handle the pressure.
P.S. The 6.5BRM beats both the 6.5Bullberry imp and the 6.5jdj and why does everyone say that you can't put a 6.5grendal in the contender when EABCO chambers for the 264LBC when those two are the same! I'm not trying to start anything just simple questions! Thank you