I have not heard of a White yet that didn't shoot well. Either the conicals or sabots. Several months ago I bought an Ultra Mag for me and one for my son. Then my dad was drawn for a special elk tag for Oregon ML so I got an U-M for him too. These were all purchased from Sportsman's Warehouse, but I think they are all gone now. At $300 + a little shipping, I was very happy.

Try Tom at Sunrise Archery to see if he can help you locate a White you are interested in.

http://www.sunrisearchery.com/

Also, if you are looking for some good bullets, give these folks a try. I recently placed an order for qty 500 of their 460 gr bullets (.5045) and including shipping from Alaska, they were less than $0.25 each. He also makes some good bullets for your .541 White.

http://bullshop.gunloads.com/prices.html

Good luck and let us know what you end up with.