In the late 50s my Dad went to Wade's gun shop and had him build one of his super 7 on a Husqvarna action. After Dad passed he willed the rifle to me his eldest son. Now the problem. I've spent the last year trying to find someone who is capable of removing the rim from the 348 winchester case and shrinking the neck to a .284 cal. I can locate the 348 brass but the company Dad used here in Phoenix to work the brass is long gone. The rifle is in great shape and I've recently shot at 600 yards with amazing results, I only use the rifle for hunting so I do not require that much brass and hand loading is the only way I can go but with only 38 cases left I want to pass this on to my kids with a reserve of brass. Who can rework my brass?