I recently got a Vulcan 3 HP .30 and had severe problems with slug clipping when i attached a brand new Huma MOD40-4/0.
Since the moderator is modular, i was able to try different configurations, from several meters in POI shift all baffles to a less than 10cm shift of POI on 50m with two baffles.
At last i was at only one segment of the moderator, but i want to test it more before i can say if that has no effect on POI. (Even with just one segment, it still muffles the report a bit.)
I am writing this here, since others might be interested in this set-up as well. i also wrote Huma about it and they confirmed my understanding that this is caused by the
a) small bore in their moderators (1,5 mm + caliber) for best effect
and
b) the fact, that the gun has a shroud with build in moderator over the barrel, which means the external moderator is not directly on the barrel end but on the shroud end causing the projectile not to leave the shroud in the centre of the hole.
Huma suggested, to either use a external moderator one caliber bigger or to drill out the baffles until clipping stops. Bummer, i just goth the thing. =(
Since the moderator is modular, i was able to try different configurations, from several meters in POI shift all baffles to a less than 10cm shift of POI on 50m with two baffles.
At last i was at only one segment of the moderator, but i want to test it more before i can say if that has no effect on POI. (Even with just one segment, it still muffles the report a bit.)
I am writing this here, since others might be interested in this set-up as well. i also wrote Huma about it and they confirmed my understanding that this is caused by the
a) small bore in their moderators (1,5 mm + caliber) for best effect
and
b) the fact, that the gun has a shroud with build in moderator over the barrel, which means the external moderator is not directly on the barrel end but on the shroud end causing the projectile not to leave the shroud in the centre of the hole.
Huma suggested, to either use a external moderator one caliber bigger or to drill out the baffles until clipping stops. Bummer, i just goth the thing. =(