horsemen61
Member
- Joined
- Oct 20, 2011
- Messages
- 6,758
ttrl
For decades, I used Montana Gold jacketed bullets for match shooting due to weight variance of less than 1 grain and they were my quality standard reference. Jake, your Hardcore Match plated bullets already exceed that standard and if you are getting less than that with 115 gr FMJ, I am impressed. Really look forward to doing accuracy testing with 115 gr FMJ carbine loads.longdayjake said:after running the machine for about a month we have now settled on a target OAL of .565". Tolerances allow for a little variation but the vast majority of them are within one to two thousandths. This can vary based on the tolerances of the copper strip though. Our copper strip is .023" thick but it is apparent that keeping it perfect throughout an entire roll is impossible. When the copper gets thick our OAL increases a little. When it gets thin it decreases a little. So, it is possible that within the same lot the OAL could vary +/- .004 thousandths with the vast majority of them being perfect.