.300 wm neck size only

[gsteve]

I had a 338 LM and all i did was neck size , everything worked great. Any reason i shouldnt with the 300?

 

[gsteve]

oh , and whats the best brass?

 

[GLTaylor]

Most folks now FL resize and bump shoulders a bit. If just neck sizing, most find FL sizing is needed after a few firings. This is especially true with belted cases. They usually require a special secondary sizing die for the area just above the belt. As far as brass, ADG or Peterson are excellent. Lapua is supposed to become available this year