Trying to get Hornady app downloaded and functional.
Something wrong with verification or server.
Anyway I have a handful of hard facts, and some thoughts on going forward.
Factory black old school hornady 105 match loads were very soft shooting in my 24 inch Faxon barrel, in fact looked like they would group soon on new barrel..
Lets just consider all these measurements as nominal, I have rounded them off for examples.
but just in case there are any trolls looking for something to bitch about, I use tool steel as calibration blocks, these are ground to 0.0000, +/- 0.0001 . But I'm not going there.
ARS magazine, bullets scraped at 2.300 COAL.
2.300 COAL put BTO of the areomatch 105g 6mm bullets at 1.560 inches.
So for safety I cut 0.0200 from AOL nominal from the magazine length.
Left me at coal of 2.280 and a bto of 1.540, it chambered under thumb pressure, there was a slide mark before the ogive. I think from the forcing cone since not a scratch or cut from lands.
The factory 105 black came in at 2.220 coal and 1.583 bto.
The listing from Hornady above, 2.245 coal and 1.505 bto for the Aeromatch
So I guess their coal is driven by Magpul magazines.
Looks like I can take advantage of the ars mags for the extra 0.040 thou worth of powder.
Need to finish my modified case to find lands but if near chamber spec I have a huge jump already.