Size down 7m/m bullet for the 270?

[brstevns]

Does anyone size down the Lee 7m/m or other 7m/m to use in a 270 win? How did it work out?

[ktw]

I've sized down 287405, the Lyman 7mm Loverin, for 270 win. If you are concerned about deformation, lubing them before sizing down will resolve most of those issues.

I wouldn't expect it to work with a 7mm bore riding design. The nose will never fit the 270 bore.

-ktw

[brstevns]

I can get the use of a 6.5 mould, would this work paper patched up?

[ktw]

I can get the use of a 6.5 mould, would this work paper patched up?

You can try it. I wouldn't have a high expectation for success.

a) If that 6.5. mold is a bore rider you might have some problems with the two diameter design when paper patching (getting a throat fit on the bearing surface AND a boreriding fit on the nose). You'd be better off starting with a non-bore riding bullet design and patching to fill the throat.

b) I would expect your best chance of success with smokeless paper patched bullets in a 270 Win to be with a pre-patched bullet diameter of something in the range of .270-.271 (bore diameter to very slightly larger). I haven't seen many 6.5 molds that throw that large.

If you want to shoot cast in a 270 you'd be better off picking up an off the shelf RCBS 270-150-SP mold, or the one offered by SEACO.

-ktw

[brstevns]

The RCBS and Seaco are out of my price range at the moment. Right now I am using moulds I can borrow are beg from someone LOL

[dntfxr]

Morme tried it in the 6.8spc, but he got better accuracy with a .278 than the sized 7mm boolits. I think the 6.8 group buy is still open, but they may be a little light for the .270win.