In one 6.5 Creedmoor I shoot Hornady ELD-X and in the Savage with a Criterion barrel I shoot Berger VLDs. I shoot 212 gr VLDs in my 300 mag. The reason for shooting them isn't because they are a tough bullet, but because they open at low velocities at long range. The reason for heavy is not only better bc, but that you can loose half the weight and still penetrate.
As far as magazine length I have an extreme long throat in the Criterion barrel, set my VLDs .004 off the lands and have plenty magazine length in the Savage action. No problem with 150s in my Winchester in 270, or 185s in my 308 Remington 700, or 308 Ruger American. Prefer the 200 gr ELD-X in the short 18 inch barrel.
I'd hunt with partitions a hundred times before I Berger VLD'd even once.
I have killed a dozen deer with VLD's. I'm curious, what made you decide to not try them?
I should make it clear that I like Partitions. Shot them many years ago. Still would use them for some things today. If they had a better ballistic coefficient they would be good for long range. When my son used the 100 gr in a 243 years ago I noticed that at short range the front end was very explosive and would open at long range if it had the capability of retaining the energy I want.