c141b
11-11-2017, 05:05 PM
I started out with a cast bullet sized to .324 with the LEE c324-175-1r. Using a cleaning rod to check boolit to lands ck,then a ck to the bolt. Checking many boolit I would get all kinds of reading,then I went to LOWS and bought a steel rod, still had multiple reading then I put a unfired .22 shell case on the tip (after I cleaned out the primer) and finely started to get readings that were consistent, then I would do a boolit push back (boolit in case, chamber the round then check boolit push back from lands). Then I got an idea, I did a rod ck then with the same boolit, a push back, I did it with 4 boolits and each boolit had a different reading, it appears that each boolit drops from the same mole slightly different.
In conclusion 1. The steel rod with the .22 shell case gave me better consitent reading.
2. The boolit push back gave me tighter reading.
3. The rod ck readings were allways larger than the push back readings.
4. I now need to recheck my other boolit calibers with more than 1 boolit reading.
Now for the questions about my K98 boolit? Lyman cast bullet handbook has a OAL with the LEE c324-175-1r at 2.830. My average for touching the Lands using the rod ck is 2.904 and for the push back is 2.895 this would give me a .065 jump gap for my boolit using my push back average, does Lyman use a large saftey margin of error? I know that each rifle is different.What is a good safety of margin for a boolit jump gap?
In conclusion 1. The steel rod with the .22 shell case gave me better consitent reading.
2. The boolit push back gave me tighter reading.
3. The rod ck readings were allways larger than the push back readings.
4. I now need to recheck my other boolit calibers with more than 1 boolit reading.
Now for the questions about my K98 boolit? Lyman cast bullet handbook has a OAL with the LEE c324-175-1r at 2.830. My average for touching the Lands using the rod ck is 2.904 and for the push back is 2.895 this would give me a .065 jump gap for my boolit using my push back average, does Lyman use a large saftey margin of error? I know that each rifle is different.What is a good safety of margin for a boolit jump gap?