Ctl312-160-2r and CTL312-185-1R

[dromia]

I have found no issues with two groove barrels and cast, size to fit the freebore, soft BHN 10-12 alloy and away you go. Sizing to groove or over is really not the best method for military barrels, sizing to fit the freebore is far more effective. Two grooves do need gas checks in my experience though, plain base bullets do tend to be finicky in two groovers, except for the Loverins.

I am currently shooting a Springfield 03-A3 with a two groove barrel and a Longbranch No4 two groover with bullets sized to the freebore, 0.311" and 0.317" respectively. Both are excellent shooters, the two groove "issues" are up there with the Marlin micro groove myths which I suspect are just down to people not understanding cast bullets, put the wrong combination in and you will get poor results out.

For cast bullet shooting you really must take a freebore/groove/bore slug so that you know what your rifle needs, then buy a mould from a reputable maker that will drop to the correct size with your alloy and you will be well on your way to cast bullet success.

Lee are not reputable mould makers, they are cheap for a reason, you may strike lucky for your needs but more than likely you will not, combine that with guessing at what size/design bullet you need and the costs can start to rise seeking a suitable bullet mould.

A mould from Accurate or NOE will do what it says on the box, be of first rate quality and a pleasure to use, have excellent after sales support and will keep their value if you ever choose to sell.

Also I would go for a heavier bullet more in the 200-210 gn range.