The only catch is that the POI tends to move around if I change the velocity drastically. So even at higher velocities, I can quickly find a good load. With the ideal seating depth known, all I need to do is to find the best load for what I want. Lee 30 cal bullets are all identical from the base to the front of the driving bands and I've found that when I seat a sized bullet to 0.3" of seating depth, a can feel the front driving band sliding snugly into the throat/leade of the rifle to align the bullet. I've done nothing to the rifle other than remove the iron sights and attach a scope to it. 308 that I bought in the early 1980's for $119 new in the box. This was my first attempt into subsonic loads and since Red Dot was my most abundant powder, that's what I used for these tests. Other powders that I've tried in the past that would work well would be Clays, Titewad, Titegroup, Extra Lite, e3, Promo. You don't need to worry about too much pressure, slumping bullets or hitting the back of the bullet too fast and too hard with these light loads. Handloads, and faster-burning powders like HP38 and Trail Boss can be used for. I've found that with these light charges, faster powders gave the most consistent velocities. 2,414 Powder choices for subsonic 308 I have a user-serviceable silencer that I shoot a lot of 300 blackout cast through. Remington Subsonic Loads (Hodgdon data) reloading data with 3 loads. I think you want to use the very fastest powder you have or can find. Some people say to drill-out the primer pockets to 9/64', but I didn't on the ones I loaded up for my buddy. So I have been working up a load with bullseye powder to keep it under 1090fps for a subsonic. I just made some for my buddy to shoot suppressed in his rifle. I was testing 113, 170 and 200 grain bullets with charges ranging from 5 to 10 grains. You will have to work up a load for yourself to find out what stays subsonic in your rifle. Re: Subsonic 308 loads with Unique 168 gr J4 9 gr of unique super sonic 8 gr. After this happened several times in a row we switched to Unique (a slower powder) and the problem went away.Range was 50 yards. 1 2 Next jack burton Member Posts: 35 Joined: Sun 2:22 am Location: Missouri Trail Boss/powder quandary by jack burton » Thu 6:44 pm When I first got into suppressors, I bought a great big jug of Trail Boss for. Subsonic Trail Boss Loads Author: John Haviland / Wolfe Publishing Co. The velocity was 300 m/s or 1,000 fps, out of a 21 inch, unported barrel. The standard pistol primers did not indicate any sign of high pressure. Curiously, no damage occurred, and the bullets hit the target as though nothing was amiss. Interestingly, we were using N 310 powder in a Thompson Contender, which developed the disconcerting habit of opening up by itself each time it was fired. The solvent was a stroke of genius because it rapidly evaporated, did the job very effectively, and left nothing extra inside their suppressors. 2,815 Subsonic load for 308 I realise each rifle is different but im after a starting point for some load data for subsonic loads in the 308. develop subsonic velocities (left to right). These loads and others were shot with Trail Boss powder in an attempt to. Prior to this a filler, such as nitrated cotton fiber or kapok, had been used on large-volume shells. Author: John Haviland / Wolfe Publishing Co. This helped to achieve better combustion and improved uniformity. The granules resemble tiny washers or, if you’d rather mini-doughnuts. A bullet was then seated and heavily crimped in place. Trail Boss is a single-base powder and granules are light grey in colour specifications give them a diameter of 1.92mm, a thickness of. After this solvent evaporated, the powder was thus sealed into the rear of large-volume cartridge cases. They also developed a system using a few drops of solvent to dissolve the upper layer of their fast powder. And the best way to get sub sonic loads is to use heavier bullets with light powders like Trail Boss. 308 as well as best possible accuracy is to use as heavy a bullet as the rifling twist can stabilize at the intended velocity range. It should be mentioned that the Finns turned some of their subsonic rifle bullets backwards for better accuracy and improved terminal performance. The best thing to do to get a sub sonic load in. The Germans developed a very fast powder for their suppressed rifles during World War II, and this may be a very close duplicate of that powder. Mate I don’t have a specific load for Trail Boss however on the ADI load data website in the FAQ section there are instructions on how to obtain your starting load with. 308 loads.I have some of the new Hornady 190gn 'Sub-X' proj and some ADI Trailboss powder or so. The powders of choice have been the time-honored Unique and a powder made in Finland by Vihtavuori Oy called N 310. Im wanting to experiment with some subsonic.
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