I lived there during the 80's and Gretna Gun was a good shop. A google shows they are still in business (since 1948). Can't say what they are like now, but back then the couple (IIRC) running it were good folks. Remember they had the only pair of Weatherby pistols (22-250 & 308) that I had ever seen together. They were big into IHMSA at the time.
Thaine

It ain't ignorance that does the most damage, it's knowing so derned much that ain't so! J. Billings