Sounds good, as long as it doesn't affect reliability. I'd be open to any guidance as to how to do this for my AK (using a spare gas tube of course).
Never tried the mod on a AK but you can probably regulate the bolt speed and ejection pattern buy using cast bullets and a powder like 4895. Thats basically what I do with my Chinese SKS it cycles with a very low pressure curve only requiring 12.5 grs. of Alliant 2400 and a 170 gr. Lee gas check cast bullet drops the brass right at my feet,MV runs about 1450 fps. on the chrono.
Here is the thread http://www.sksboards.com/smf/index.php?topic=41391.0
If you PM Mr. Gibson he will probably provide you with some photos of the mods.