308 subsonic load question

[Mullhead]

I shoot 11.1 grains of trailboss 200 gr smk. Sub Moa at 100. I've shot it to 300. Very accurate and I was very surprised. But at 600 yards it's 26 mils or 565 inches of drop. 47 feet of drop gotta be a rainbow coming in .

 

[Gunfighter14e2]

Takes me 104-119 moa (depending mother) over my H/S with the can on to get to 600 with a 192gr cast. I can't get a SMK to work well past 400 myself. Pro-hunters do well, but the cast I settled on is the best I've shot to-date with either a 10 or 12 twist. I'd like to try a SMK in a 7-8 twist someday just to see if it would get there nose on. Sub loaded 175smk's from a 12 twist I have, start tumbling at about 140-145 yds an the 10 twist does the same at about 350.

 

[Jeepguy97]

Good to see this thread is still going

 

[cav has been]

Takes me 104-119 moa (depending mother) over my H/S with the can on to get to 600 with a 192gr cast.
I was dialing 23mils ( all I had left ) and holding 6 mils over my hs zero to hit at 557yds with the 164's. Can't wait to try the 194's at distance. Seasons changing, snow on the ground this a.m.so more load work and more shooting/ data gathering on tap.

 

[Mullhead]

So how many grains of 700-x for 200 gr bullet out of a 308? What kind of case fill is it compared to trailboss . Thanks

 

[Gunfighter14e2]

So how many grains of 700-x for 200 gr bullet out of a 308? What kind of case fill is it compared to trailboss . Thanks

I do not use any case fill for anything, subsonic.
Depending chamber/barrel ect I'd start at 7.8 or so an work down until the crack goes away. I run a 193gr cast, gas checked bullet, from a 12 twist 22" Pac-Nor an 7.0 is about 1080fps at 880asl an still subsonic down to 25-35* F. I prefer 700X over some other powders but, it jams my powder thrower so I use a different powder.
I do load 700X in the subs that have to be placed <MOA but most of the time a 2 MOA load still works just fine. I've never seen/heard of different levels of dead.

 

[Mullhead]

Case fill,I guess load density would have been a better term. I've only used trailboss in 308 and do not load any pistol calibers. Moa is key I shoot a lot of deer with subs 150 yards and in .