Originally Posted by ronpet
Can anyone tell me about the A.I.? There is not a lot of information out there about this wildcat.
Is there enough of a ballistics improvement over the standard 270 win to warrant the upgrade. How's accuracy?
Would the 270 WSM be a better choice.
I sure appreciate any feedback!
I just saw this and I have been a 270AI person for about 20 years. It's a wonderful round because the 270 win case is not big enough to hold the required amount of slower burning powders like IMR 7828. 270 win cases are extremely compressed loads when you put about 60-62 grains of powder in them.
My AI also has a 29 inch barrel and was throaghted like a Weatherby .250 inches. so were are not exactly comparing apples and apples
I only really shoot 140's or 150 SPBT for hunting and 115 gr. HPBT's for varmint days. I spent allot of time at the range with the chrono and R-22 and IMR 7828 with LR mag primers work the best.
I've exceeded 3600 fps with 100 gr. The 115 gr BC is so much better and they can be loaded to near 3450 without case damage
The weatherby 270 is poor choice. I've done chrono work and load development with a friends gun. You can stuff in about 5 more grains over the AI. But the cost of the cases .......... I did find out that most reloading books are very generous as to listed speeds of reloading data for guns like the Weatherby 270. They just don't do it on the range.