![]() ![]() 8.8 gr of trail boss in a 308 with a 150 gr bullet (flat base round nose) will fill 46 of the case. 328 g/cc so a load of 9 gr in a 30-06 case would only fill 39 of the case. However, it will give you a good ballpark to start with.Ĭompare your chronograph readings to what GRT is predicting and work up slowly. Compare that to 0ver 45 usage in the 308. So I have been working up a load with bullseye powder to keep it under 1090fps for a subsonic. Ive tried it with and without a silencer. I dont have crono data yet, am simply going by ear (no supersonic crack). Ive tested this load over multiple rounds and it works. The rifle is a carbine, 16' barrel, full length gas system. They shoot 1/2 groups out of my Ruger Scout rifle with 16 barrel at 100 yds and they are the quietest subs. GRT and Quickload will not be very accurate with these low charges, at least at first. Ive developed a load that is subsonic and cycles the action in my DSA SA58 FAL rifle. Stay away from that velocity when working up this load, and choose something that will give under 40ksi peak pressure at just over supersonic. Note what the velocity is at max pressure. Basically aim for under 20ksi for starting load. Use either Quickload or Gordon’s Reloading Tool to find a starting load. Reason is cast bullets have much lower coefficient of friction, so the likelihood of squibs is reduced and any squibs that do occur are easily tapped out with a cleaning rod. Stay away from H110 or Win 296.įor subsonic, you’ll want cast bullets. You can even go as fast as bullseye, but I wouldn’t recommend it. IMR-4227 is a popular choice, the old time classic is 2400. You’ll want something in the slow-magnum-pistol powder burn rate or faster. With one or two notable exceptions, fast-for-caliber powders are used for heavily reduced loads (the exceptions are IMR-4895, H4895, and Shooters World Tactical).įor 308, you absolutely do not want to use varget for subsonic. If you’re interested in using reddit for self-promotion check out our Official Spam Policy. Other Subreddits you may be interested in: This unfortunately includes reloading components like brass, and projectiles. Due to reddit policies all posts selling, trading, or buying ammunition are forbidden. If you'd like to post reloading equipment for sale, for trade, or a request for something you'd like to buy please put, , or respectively, at the beginning of your title. R/Reloading discord join us for supplies and helpful conversation: Https://discord.gg/reloading I was anxious to try TG so loaded 3.3g and 3.1g of TG with a 55 Hornady SP and got 1000 fps and mid 900s respectively. I have recently been working up subsonic loads for 308 using Trail boss and TiteGroup with 170gr Sieerra flat noses. It still lists a 223 load with TG but no 308 Win. Posts titled " Help! New Reloader." will have less responses than a post titled like "Questions about crimp for. Research found that Hogdon used to have a subsonic load listed with a 168g bullet and 8g Tite Group. Please make sure you title is relevant to the specific question you are asking. ![]() 308 subs working.Remember, if you post a picture, make sure to provides some context. Barely louder than a pellet gun, but launching a 180 gr. 300 Sav case on right:īy the way, it sounds great. 300 Sav die in middle, then trimmed to correct length for a finished. of Trail Boss with a little room to spare. Just want it to be able to knock over hares quietly for my dogs dinner each day while on multi day trips ( and maybe a goose for a change of diet for me ). 308 which has a lower case capacity, with 12.5 gr. Dec 2014 Location canterbury Posts 4,042 308 subsonic trail boss projectiles and loads Im wanting to put together a subsonic load for my 308 using trail boss. A 308 case will hold a lot more than 10 grains, look at the link I provided above and follow the directions. Out of my 20in AR10 does 1000f/s and very accurate. I use 10.5 g Trail Boss, 180g Hornady flat base round nose bullet, OAL of 2.675 in 308. 220gr round nose with 5 gr of trail boss. The Discreet Ballistics 308 Win 190gr Subsonic Target Load was conceived and designed as part of a two load system. I havent located my chrony yet and so I'm very sketchy on shooting something I have no idea of the fps. The most I have been able to get in a case is 6.5gr. If you want to try trail boss, 10 gr would be a good starting point.ġ0gr of Trail boss wont even fit in my case. Hodgdon's website shows 8.0 gr of clays or titegroup for 1080 FPS with a OAL of 2.800 with a Sierra 168gr bullet. Look at titegroup, clays, or trailboss for your subsonics. If you want subsonics you need to use a small charge of fast powder. You're going end up with a squib if your not careful. ![]() Bullets are tumbling.Īm I using too heavy a bullet or other wrong components?ĭO NOT use such a low charge of a slow powder for subsonic loads. I'm loading 168gr SMK HPBT with 8.5 gr IMR 4895. ![]()
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