02-01-2012, 01:25 AM
The 6.5 JDJ has a case capacity of 43.6 gr of water. The Grendel has a capacity of 36 gr. of water. The Grendel in rifles is designed to hold up to 50,000 CPU, but the Contender supposedly is limited to 42,000, but I can't say that authoritatively. It would seem to be possible to use a lower pressure such as the JDJ, but I've not personally had a problem with my current loads in the Contender with my Grendel. I will limit myself to 100 gr bullets though with that in mind.
