for this ammo, tonight's test was mostly to test the sound difference between the super and sub sonic rounds. The 2 supersonic rounds were 1 and 2 inches high, but note I am not setup, zeroed etc. I was actually surprised at the difference. But that is fine, I don't mind cycling the rifle manually if I'm getting something for it. Subsonic rounds turn my 7.62 AR clone into a "bolt gun". The subsonic ammo removes most of 2 of the 3 causes of noise from gunfire, the supersonic "crack" and the cycling of the action. At the firing position I could also tell the subsonic rounds were much quieter. She reported first two rounds heard well and last two rounds "much, much quieter". She didn't know the sequence of super/sub I would fire. She was on back porch of house about 300 degrees off my line of fire. Talked to wife on radio after each round. Then fired 2 rounds HSM 7.62 175gr subsonic 1090 nominal mv. Ok, went to 150yds tonight, used NVD on passive, fired 2 rounds HSM 76.2x51 175gr 2580 nominal mv. I still haven't tinkered with my SS loads, but hope to do so when the weather in my area is more suited for tinkering, plus a bottle of trailboss makes a great valentines day gift! 38 special +p., with no crack downrange, sort of muffled and less noisy than a 12 gauge target load. there is a guy at the local range that shoots SS loads unsuppressed, and IMO to my "naked ear" standing 50 ft away the muzzle sound seems to be somewhere between. others being unique, 700x, red dot, tightgroup, i'm sure there's more choices.Īnd as above, your not going to get super quiet report, but a heck of alot less than regular ammo. Looks like trailboss is the most popular powder, starting higher around 11gr and working down till there's no crack & subsonic on the chrony. no need for using fancy schmancy bullets as the BC is almost NA considering the FPS. The most i got out of all of 'em it is that 100-150 Y is the best to hope for (depends on bullet and twist) for stabilization issues with "acceptable" groups. The advanced search has a bunch of topics, but then go off track pretty quickly and they are somewhat hard to follow. I'm in the same boat as you, and posted a similar question a few weeks ago, found some very usefull info here She would be about 45 degrees off the line of fire on the other side of a hill. then ask if she heard it then fire subsonic and ask if she could tell the diff. My wife (at the house) cannot even hear me shoot my 7.62 but I'll call her on the radio and tell her to go out into the yard. I bought a box of HSM 175gr 7.62 subsonic to test and I will try it and report back. But if he wishes to reduce noise for neighbors anywhere in front of his firing line it might help. If OPs purpose is to reduce noise from his perception then he will probably be disappointed. So certainly for effects on the shooter, the subsonic ammo might make a barely detectable difference where as the suppressor will reduce the noise for the shooter. that might be the loudest thing they heard. but people anywhere along the bullet path (even 60 degrees off the line of fire) would still hear the "crack" first. So it would seem that suppressor will make things quieter for people at the shooting position and behind the shooting position. My understanding is noise from gun fire comes from three sources:Ġ3 - Mechanical noise (like for semi-autos)Īnd my understanding is suppressor can help with source 01.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |