You have 2 different threads going hear...
We all want to read about your dream custom build, ask and answer questions. Hell, spend most of my time talking with my shooting buddies on this subject.
2nd...relationship advise. For all we know
@PAYDIRT it Joe Exotic and I would not take relationship advise from him either. I do agree with
@Centuriator...get on with it already.
As I said your finances are none of our business, and frankly, like you we run our finances like a business and have M's in the bank account, as they say. When we married we were on such a tight budget paying cash, no debt, student loans we didn't spend $20 that was not accounted for. It had nothing to do with "It's my money/your money" we are a team with a business plan and it works. 17 years later...our portfolio has changed and it's no longer $20 but the principles still apply. Your threshold of $500 will grow over time, I'm sure.
Unlike some, my testicles and manhood are not validated from other men and being a self centered male chauvinist. I can tell you we don't fight about money. We both have everything we have ever wanted, and we supported each other to get what we wanted. If that works for you then keep at it. Finances are #1 to fight about in a marriage, avoid that and it leave more time to argue about not getting enough sex.
Do what works for you guys...and when it stops working, read a book, get some advise, and find a new way to do it. As for long range shooting I do not have a WinMag but do have a 300 PRC on the way. I'm sure I will be shooting my .22lr and 6.5 Creed more that it though. The PRC was last on my list.