The short answer is yes. This year we worked on recapitalizing and warehousing .20g to .30g in depth in ECO and Styrene. We've done that. The team actually met this morning and amongst our winter projects is reloading on Tracer (the really good stuff in .25g), tracer units, and the heavier products above .30g. I have some samples coming in and will make materials selections shortly. We do intend to roll out in the spring with a good > .30g selection that don't use iron powder.
The big issue is there is a lot of pressure on manufacturers to utilize additives for weight that don't appear on proscribed lists. The EU has been vocal for a long time with their SVHC list (16 "Substances of Very High Concern") and that list has gotten into other jurisdictions with additional restrictions. Its a financial, logistical, engineering and materials science challenge that people don't appreciate - they see a little 6mm ball and say "what could be so hard about that?". Its harder than it looks.
My experience with MadBull is simply a lack of consistency. They do huge batch runs, annually from different manufacturers and from the latest ricebagging I am seeing, without a lot of thought to quality issues. One batch is great, the next is shyte. Or a great batch is spoiled by poor shipping and storage practices. Bottom line is when I go to buy a 5000 count bag, I don't know if the BBs in that bag were in the bottom of the ricebag or the top. Stuff like that spoils consistency. Remember, consistency does breed accuracy.
I'd put our FRAG .36g up against MadBull for sure.
Wrt additives:
Tin is toxic (lead content) and copper is expensive and too light and does not naturally bond to ABS. Copper can also be a contaminant.
Chaz: "After I cleaned them off with coke I noticed the surface was smooth to the touch and lost the gritty feeling."
Look at it under a magnifying glass - you'll see the surface is indeed pitted. I don't know if you've seen our tradeshow booth setup, but we bring magnifying lamps so people can actually SEE these effects - its pretty shocking for most people to realize that a smooth feeling surface does not equate to smoothness - our sense of touch is rather low-res, but the visual inspection doesn't lie. Of course you need to be a BB-geek to get that detailed but once people are spending thousands on guns and parts for accurization, BBs construction becomes the next point of concern. It also lets you assess if the BB is out of true - and if it isn't, it won't matter how polished it is, it will fly randomly.
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