.358" cast bullets for accuracy?

[DanM]

Well, I tested the first batch of 125gr., .358" RN slugs today, and the results were less than spectacular. I made up a soft load with 6.3grs. of Blue Dot for an average velocity of 1003fps. My Mecgar mag just won't keep up with my usual, 1120fps 125 gr. loads that work well in my BHP. The 1.160" soft loads did cycle pretty well, but grouped poorly, 4-5" groups were the best I could do, which is similar to what I have been getting with Winchester 115gr. Wal-mart ammo at 25 yards. Groups were 6" high, but that should improve when the new mag springs arrive, allowing me to shoot faster loads. I still think that slugging the bore, and loading cast bullets to fit, is the key to best accuracy from an old firearm. Many, if not most, of the shooter Lugers out there are likely to have bores worn .002-.003" over standard, and could potentially benefit from this practice. Well, I still have 450 of these bullets to play with, and will be trying other powders as time permits. When I finally cook up a winner I will post the results.