How short is your freebore? The barrel length is keeping you 130-150 FPS lower automatically. Add that to the velocity lost due to short freebore and Alpha brass you will probably be where others are.
Just load them up via standard 223 load data. Once formed you will likely not notice any accuracy improvement, meaningful drop/windage improvement or case life. You will be able use a little more powder and get more velocity but it won’t show up in the field or on the range.
Ordered a specific reamer three times and each time it was the wrong reamer. Not even close. Actually kept getting worse vs getting better and this was over the span of 2 years. Sent the same specs to JGS and got the correct reamer in 8 weeks.