[AZRickD]

I got my Sinclair tools to measure my chamber and my max OAL.

My Speer Reloading manual says that max cartridge length is 2.015" with the Trim-to length being 2.005"

My chamber length appears to be 2.043" (hmmmm).

The Speer manual says that Max Cartridge Length is 2.810".

My max OAL is 2.889" with

What would you advise as a good OAL to start from for my next reloads? Is it *typically* a rule of thumb that the bullet is supposed to jump about 10-thousandths of an inch before engaging the lands for good accuracy and pressures?

[Steve Smith]

You should still trim your cases, and make sure they are all equal lengths.

Regarding your rifling, try dropping .010" off your max OAL and shoot it. You may also want to try .020", and .015". They may need to be single loaded rather than loaded through the magazine.

Remember, you should #1 always keep your measurement bullet so that measurements later in barrel life will be made with the exact same bullet. #2, never transfer OAL data from one bullet style to another.