Hi Lapua,
At the moment I am using a 470NE and must say I can shoot it well, BUT I am seling it for a lighter, faster, less recoil, more versatile 450/400 and would think a Heym in 450NE or 450/400 would be great.
The American Distributor {a NITROEXPRESS member} can have it built with 26" barrels and a nice pancake cheek piece also.
WARNING; The Australian Distributor..
Regards
ozhunter