As I've mentioned in other forms I own a Remington 700 chambered in 270 win that I've been shooting for about 15 years, but the gun is about 20-25 years old, but was never fired untill my father gave it to me at the age of 12 or 13. Right now it is still shooting o.k. but last year my groups started to open up a little bit and this year a little more and I think that it may be time for a new barrel, and I was thinking about a hart , but then i thought that an ackley improved might be nice, if there is one, any information on this would be greatly considered and helpful.