switching from lead to montana gold

[grassy knoll]

i currently load .40 with 4.3 grain Titegroup 1.25 OAL, winchester SPPrimers and 180 grain cast lead bullets

if i switch to montana gold 180 grain bullets should i do anything else different?

thanks

[Flexmoney]

I figure that any time you change something...you should drop the charge 10-15% and build back up...checking for pressure and problems.

[Jon Merricks]

I had to tighten up on the crimp. But start from loose and tighten it up a little bit at a time.  But dont use the same crimp if you go back to lead. It would be too tight.

[Duane Thomas]

What Jon said. Plated bullets are typically sized .001" smaller than lead.

[mellow]

found this in the depths of the reloading bin. lol. just wanted to add my .02.  MG says to load to jacketed data. When it comes to plated bullets (such as ranier, west coast and berry's), some say to load to lead data, some say jacketed data. Depends on the brand.  There's a difference. When loading MG bullets. Start out on minimum jacketed data and work up