22BR Question

[ehkempf]

What should the length and trim to length be for the 22 BR? I ask this question because of a conversation I had with Jim Hart (Hart Rifle barrels). I was telling him that I trim to 1.510 based on reloading manuals that I have and published specs that I have found on the Web. Jim told me that he tells his customers not to trim at all after necking down, because the reamer he uses has a longer neck. He was telling me that the 1.520/1.510 size was originally based on the old 6 MM BR Remington which is shorter that the 6 MM BR Norma. His belief is that most reloading data showing the 1.520/1.510 size are based on this old spec and should be updated. What are the thoughts of others?

Thanks,

Ed

 

[fdshuster]

Ed: Get a chamber length gauge fromSinclair ( costs about $7 & is reusable), and measure the true length of your chamber, record that length then keep the brass trimmed to whatever length you're comfortable with. On my ppc's & BR 's I keep 'em .005" shorter than the measured chamber lengths.

Never get a ring of carbon buildup at the chamber mouth, it's not a concern, as verified with my borescope.

 

[johnmyers]

Ed: Get a chamber length gauge fromSinclair ( costs about $7 & is reusable), and measure the true length of your chamber, record that length then keep the brass trimmed to whatever length you're comfortable with. On my ppc's & BR 's I keep 'em .005" shorter than the measured chamber lengths.

Never get a ring of carbon buildup at the chamber mouth, it's not a concern, as verified with my borescope.

agree 100% and I trim .010 short of chamber length

 

[James EPS]

Did he tell you what the OAL of the chamber was? Have him send you a copy of his reamer print or do like others here have suggested. Mine is a 1.520 chamber and I trim mine to 1.510. Also do you know what neck you have?