1. The .220 Howell is a factory load, not a wildcat.
2. Loaded ammo and factory brass are available ...
3. ... or form from .25-06, .270, .280, '06 cases.
4. Over-all length with 75-grain Hornady A-Max seated 0.555 inch is 2.925 inches.
5. Optimum twist for this bullet is one turn in eight or nine inches.
6. More info at
http://www.hunting-rifles.com7. Optimum powders: Ramshot Magnum, IMR 7828
8. approximate performance with Ramshot Magnum, 26-inch barrel (exact performance in unknown rifle is impossible to predict):
-- 50.0 gr, ~ 3,200 ft/sec, ~ 39,000 lb/sq in.
-- 54.5 gr, ~ 3,600 ft/sec, ~ 52,500 lb/sq in.
-- 54.9 gr, ~ 3,650 ft/sec, ~ 54,000 lb/sq in.
Matthew 7:21 Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.