Originally Posted by SBruce
I am thinking that the improved 06 case is not needed with the light bullets you mentioned. If you were talking 105-115 grn bullets...yes, improve it.
As mentioned above, even the standard 6-06 is quite overbore, but that's what it takes to get 3600'/sec with medium weight bullets. I shot a 220 Swift for many many years (55 grn bullets at 3600-3800'/sec). Shot about 5000 rounds through it before it wouldn't hit prarie dogs at 200 yds anymore. The 6mm AI is pretty hard to beat too.
One other thing, you might have your smith leave the barrel as long as possible if you go with the 06 or improved 06. minumum of 26", 28 would be better. A 24" tube probably won't give you near enough velocity to justify the 06 case capacity. My standard 25-06 shot 85 ballistic tips at 3600, but it had a 26" tube.
It's a 1:10, rem varmint, that will be finished at 26" + break.
thanks for the input so far. It's all right in line with what i was thinking. Plus the dies are much cheaper for the non-imp!