dmurphy317
Cascadedad worked his U-Mag through about the same shooting routine as you - we both felt the .504 was to loose - He ended up getting .5045, at that time that was as bif as Dan could make themand they worked well. He, his son, his father and now I think his brother are all using that bullet.
I do not have any of the .5045, but I am sure that Cdad does - you want to get a few from him and send them you way for a trail run?
He also switched out all of his to the peep sight - can not remember which one but it helped him a bunch and what ever peep he used it was really versitile and easy to use. How about the front sight - the one that came stock on the gun was set for sabots and lighter bullets - seems most switched that out also.
I really do like mine, although I have not shot any of the naked lead through it yet. It is scoped up and I use it with Noslers and a HPH-12 sabot - DEADLY...
Which stock do you have?