I had a 1:8 Lilja factory contour duplicate installed on a Kimber Montana 84L finished @ 22".
I've used Nosler 150ABLR @ 3050fps and 140 Badlands SuperBullDozer @ 3075fps, both using R-26 powder. Due to using the Kimber action, I'm limited to 3.34" COAL. With both projectiles, they're seated a LONG way into the case and both have significant jump to the lands. It doesn't really seem to matter, both projectiles will shoot well under MOA @ 200yds on paper and have carried that accuracy to 600yds, as far as I've shot on steel.
A buddy had a 1:8 Lilja Rem 700 factory contour installed on his 700 action and finished @ 24". He's using Nosler 140 Accubonds w/R-23 and getting 3150fps and 1/2MOA accuracy on paper @ 200yds.
I post this not to tell you to build a rifle, but, in order to give you an idea what's possible for velocity and accuracy from the barrel lengths and mag-box restrictions you might have to deal with buying a factory rifle.
I've used Nosler 150ABLR @ 3050fps and 140 Badlands SuperBullDozer @ 3075fps, both using R-26 powder. Due to using the Kimber action, I'm limited to 3.34" COAL. With both projectiles, they're seated a LONG way into the case and both have significant jump to the lands. It doesn't really seem to matter, both projectiles will shoot well under MOA @ 200yds on paper and have carried that accuracy to 600yds, as far as I've shot on steel.
A buddy had a 1:8 Lilja Rem 700 factory contour installed on his 700 action and finished @ 24". He's using Nosler 140 Accubonds w/R-23 and getting 3150fps and 1/2MOA accuracy on paper @ 200yds.
I post this not to tell you to build a rifle, but, in order to give you an idea what's possible for velocity and accuracy from the barrel lengths and mag-box restrictions you might have to deal with buying a factory rifle.
