First impressions:
It's heavy and polished to a mirror finish. It weights about 1.5x as much as the prometheus it's being tested against. The crown is neatly cut and very deep, almost 2x as deep as the prometheus. The hopup cutout is tapered nicely from outside to inside... this should allow my bucking to flex more naturally and will probably increase life of buckings significantly. It came in a rigid plastic tube about 2x the diameter of the barrel. There was no machining oil or shavings or dirt inside the barrel whatsoever, and it looks to be polished internally as well as the prometheus.
I chronoed them with:
Chrono Results:
KA SR16 - Duracon piston head, sp130, spring guide, all that stuff. G&G bucking, h-nub, hop-up dial all the way off.
G&G .25g bb's, non-bio. 5 shots each barrel.
Prommy - Average of 5 - 416.6, highest 418.0, lowest 415.8.
Masamune - Average of 5 - 423.6, highest 425.6, lowest 420.4.
Slight increase, nothing to write home about though. It seems to be slightly less consistent though.
50ft Accuracy Results:
20 shots each (G&G .25g non-bios, with a broken-in, but not worn out, G&G green bucking, fired after adjusting the hopup for a level flight. King Arms stock hop-up unit, fully upgraded gearbox for the velocity results listed above in 'chrono results'). Indoors, level shooting from a seated bench position with a bipod and supported pistol grip.
The airsoft GI 6.01 is notably better in that over 60% of the shots were within a 1" circle, and the overall spread was smaller by a fair margin. The Prometheus barrel showed a large number of shots in a 2" circle, with a fairly even distribution across it's overall spread.
Airsoft GI 6.01
1.75"x2.5" grouping
Prometheus 6.03
2.5"x3" grouping
Well, I've officially decided. The Airsoft GI Masamune Barrel is more consistent and accurate than the prometheus, by a largely noticable difference.
First-shot hits over 70% of the time at or near 250feet. Sorry no more scientific evidence, but my old prometheus has found a new home in another gun.
For nearly $20 less than a prometheus, an AirsoftGI 6.01 outperformed in every category. Cost, consistency (density of main spread), accuracy(size of total spread), and velocity.
