As long as you aren't trying to load any barn-burners that exceed Berry's max velocity recommendations, then you should be just fine.
If I couldn't find load data specific to that bullet, then I'd start with minimum loads for a similar weight LRN hard cast bullet and work up an accurate load from there.
In regards to your question about using the RN profile bullets in a tube mag, some sources recommend against it. You definitely don't want to use any bullets with a "pointy" profile that might possibly set off the primer of the next round in the tube mag. That being said, I can't see how the RN profile you pictured could possibly have enough of a point to impact the primer of the next round in the magazine. The profile is so blunt that it is going to impact the case head as much or more than the primer.
Igniting a primer takes a really HARD impact from a small and pointy object - like a firing pin - and the profile of the bullets you posted doesn't even come anywhere near fitting that description.
When you consider how deep of a dimple we regularly see in the primers in threads about guns with "light strike" issues, it seems extremely unlikely that a bullet with the pictured profile would pose any real danger of setting off the next round in a tube magazine.
JMO, and YMMV...
