30 cal inside neck dia.?

[Outwest]

What should the inside neck diameter be on a 300 wsm case after sizing?

 

[Fast14riot]

The answer is, it depends. Ideally, at least 0.001" less than bullet diameter. Some like as much as 0.004" less than bullet diameter. Most people fall somewhere between those two. So, 0.307 to 0.304 is acceptible to most.

 

[Bill Norris]

The answer is, it depends. Ideally, at least 0.001" less than bullet diameter. Some like as much as 0.004" less than bullet diameter. Most people fall somewhere between those two. So, 0.307 to 0.304 is acceptible to most.

I like to see .003 below bullet diameter to begin load development and work from there if neck tension needs testing.