Sorry guys. We were off the week after Christmas and have been "digging" out ever since
We use only the highest quality copper and lead available to eliminate impurities or other material issues. Our material vendors have been in their industry for decades. We have regular meetings at their facility and ours to refresh our mutual understanding of our highest material quality requirements.
Our bullet weight tolerances are listed below. The actual results are usually tighter than these tolerances allow:
- 17 Cal to 30 Cal: +/- 0.2 gr
- 338 Cal: +/- 0.3 gr
Our bullet base to ogive tolerances are listed below. It is important to note that measuring this dimension is difficult as the point of contact is a thin and rounded surface. If you find measurements greater than the tolerances listed below please measure the same 10 bullets several times to confirm that your measuring device is reliable and repeatable (many on the market are not). We use a specially developed process which includes custom made gauges to ensure reliable and repeatable measurements. Most reports of bullets outside this tolerance are found to be the result of how they are measured:
- 20 gr to 115 gr: 0.003 ES
- 120 gr to 210 gr: 0.005 ES
All jackets, cores and bullets within a given lot are made with one die to guarantee consistency.
Each bullet is made on a die that is designated for that bullet. This die is set aside and used again for all lots until this one die wears out.
All tooling is precision made using dimensional tolerances in the .00005. Using precision-made tooling is an absolute requirement. The companies who make our tooling are specifically in the precision tooling business. We meet with them regularly to communicate our tooling needs and special projects. Those who understand precision tool making know that these things are possible but not without deliberate effort and experience.
Dave Tooley, John Kielly and gstaylorg posts are spot on. BUT if you have a problem call us ! We will take care of you!
Take care,