Well I just wanted to update this since there is very little info I've been able to dig up about these BB's in particular. I got my bag in the other day and did some shooting and I'll be comparing them to WE .40g Sniper BB's since it's the closest comparison I've got handy. The WE BB's are dark grey or green colored very hard to see but pretty dang consistent from what I can tell but it's hard at a distance to tell. They are very polished and somewhat soft but not enough to effect feeding in my VSR10. These Ajax BB's are much less polished I'd almost say coarse in the surface finish matte white color. Not allot of imperfections I can see by eye and I haven't cut them to check for air bubbles. I did find with my stock bucking in my VSR10 I can overhop the WE bb's but I can't do the same with the Ajax custom BB's. For some reason they don't seem to grip the hopup as well as the WE BB's, could be surface finish or size not sure which but I tend to think finish. As such I moved up my plans to rhop my gun went ahead and did that so I could get enough hopup to test these new BB's. After that I was able to overhop them if necessary though it's a bit strange, they just seem to increase the ballistic trajectory rather than overhopping like you could see on a normal bucking. Either way I've gotten consistent hits at 75 yards on a folding chair which I use as a target. Not 100% at that range as much to do with wind as anything else but 8 out of 10 usually. I do get an occasional flier that I can't explain, could be the BB's or the gun not sure, typically it overhops a few feet higher than normal almost like the hopup is setup higher than it actually is, next round is fine. Happened to me around 1 in 25 or so BB's. So maybe once a mag I'd get something weird happening but my gun is still in the tuning process so hard to say. I weighed a small sample of them and they came out pretty consistent though per my scale .03g light, most all of them came in at right on .40g instead of .43g. Not sure if my scale is off .03 or if they are light but they are consistently light in the sample I weighed out. I will likely weigh a bunch more and see if I can't find a light one here and there to explain the fliers but I haven't done that yet.
Overall I like them, much easier to figure out where things are shooting with these than darker BB's, I'm quite happy with the consistency ignoring the fliers. I've managed to achieve my longest shots so far with them. That could be the rhop as well as the BB's but they are playing a part. I can adjust the hopup and manage to carry BB's 120+ yards now but I'm not able to hit a chair at that distance. Wind starts playing too much a role, but with a larger target like the side of my pole barn I can watch the BB's fly in and impact the tin with an audible tink that I can hear. So I'd say these are a good/great BB for the price and I don't have any real complaints so far with them.