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Posted: 9/8/2011 1:29:27 PM EDT
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I was curious. If I wanted to load a 90 grain bullet (in 5.56 case at magazine length) at subsonic speeds shot out of a 11.5 inch barrel 1/7 twist AR15, and if stable, would use a suppressor. I am pretty sure it won't cycle the action unless I go with a custom recoil spring (experiment) and I may have to open the gas port a lot more as well.
what powder should I start with? Since I am going to load these at subsonic pressures, should I worry about seating depth with such a long bullet? what is your best guess on pressure curve with the recommended powder, I was thinking Trail Boss since it is a bulky powder to fill the case, compression load. anyone want to hazard a guess? |
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Pretty sure a 90 gr bullet cannot be seated to mag length for a 223/556. This , I do believe that the ogive on the bullet would be at the neck... hence nothing for the neck of the case to hold on to. I agree. If you want to shoot subsonic, why not a 9mm upper with 147 grain bullets? |
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Quoted:
Quoted:
Quoted:
Pretty sure a 90 gr bullet cannot be seated to mag length for a 223/556. This , I do believe that the ogive on the bullet would be at the neck... hence nothing for the neck of the case to hold on to. I agree. If you want to shoot subsonic, why not a 9mm upper with 147 grain bullets? I have one of those. basically I have everything I want or need, so now I'm "playing" with guns. I already have a 11.5 inch barreled upper and I have a can for it, so now I am experimenting with custom applications for fun. |
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