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lurkingknight · March 6th, 2015, 22:25

here are the numbers translated so airsofters can understand a bit easier:

686 FPS with a .2 for face shields
572 FPS with a .2 for goggles
344 FPS with a .2 for spectacles

I calculated these numbers basing a 1/4 inch steel ball weighing 1.046 g.

It looks like your numbers are from a slightly more dense steel, I found several charts listing several different types of steel ball bearings, ranging from from 1.046 to slightly more, so we can assume they'll all reside in and around these numbers.

The difference in steel densities is irrelevant in this case, 2 are well above fielded output, and the one that is in contention is well below what is required for airsoft.

The concern is real, people could be betting on semantics in terms of how their eye pro is classified as a goggle or spectacle, and whether or not their particular eye pro was 87.1.2003 certified vs 87.1.2010 certified, most of the time it's never marked, it's just marked as 87.1 or 87.1+.

March 6th, 2015, 22:25	#73
lurkingknight "bb bukakke" KING! Trader rating Join Date: Jul 2011 Location: Ottawa	here are the numbers translated so airsofters can understand a bit easier: 686 FPS with a .2 for face shields 572 FPS with a .2 for goggles 344 FPS with a .2 for spectacles I calculated these numbers basing a 1/4 inch steel ball weighing 1.046 g. It looks like your numbers are from a slightly more dense steel, I found several charts listing several different types of steel ball bearings, ranging from from 1.046 to slightly more, so we can assume they'll all reside in and around these numbers. The difference in steel densities is irrelevant in this case, 2 are well above fielded output, and the one that is in contention is well below what is required for airsoft. The concern is real, people could be betting on semantics in terms of how their eye pro is classified as a goggle or spectacle, and whether or not their particular eye pro was 87.1.2003 certified vs 87.1.2010 certified, most of the time it's never marked, it's just marked as 87.1 or 87.1+. __________________ I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know. Last edited by lurkingknight; March 6th, 2015 at 22:28..