03-25-2012, 02:25 PM
I did get out to my range yesterday with the 12.2 gr load and suprise, suprise when you seat the bullet a tad lower it increases the velocity a tad higher and at the fringe, a tad is to much, so about 90% of my loads were just over sonic. I will drop back to 12 gr of 2015 with the bullet seated to an OAL of 1.808 this should put me back to the velocity were I was with 12.2 gr at the prior OAL setting befor the change, that had all subsonic velocities. Only thing is the 12.2 gr load this time had an ES of 100 fps with the lowest at 1063 and the highest at 1163, exactly 100 fps off. You know, to do this right, you might need to adopt a bench rerst load process, press, scales and powder to the bench and shoot as you adjust.
In my post above I said #9 functioned, that is true to one extent, the first load at 8.5gr did function, however the higher charges did not function, odd that. But I went back and reread my notes. It was H-335 that functioned through its entire range of loads in my gun but had extreame spreads of numbers like 176 fps. However 13.4gr gave me a highest velocity of 1101 with a SD of 31. So 13.2 to 13.3 might well work well at the reduced OAL in my gun.
One thing is obvious, you must fiddle with the load to get the velocity, function and accuracy into one package and it helps a lot to have some experiance in reloading otherwise you can spin your wheels for a long time on this.
Well I am off to Tulsa for the show, so it will be a while before I post again. Oh, the AR upper I bought in Vegas shot 3/4 with some scrapped up loads for the Mini-14's testing I did when I rebuilt it, so with loads built for new upper, it should shoot OK. Not to bad for $298.
Ed
In my post above I said #9 functioned, that is true to one extent, the first load at 8.5gr did function, however the higher charges did not function, odd that. But I went back and reread my notes. It was H-335 that functioned through its entire range of loads in my gun but had extreame spreads of numbers like 176 fps. However 13.4gr gave me a highest velocity of 1101 with a SD of 31. So 13.2 to 13.3 might well work well at the reduced OAL in my gun.
One thing is obvious, you must fiddle with the load to get the velocity, function and accuracy into one package and it helps a lot to have some experiance in reloading otherwise you can spin your wheels for a long time on this.
Well I am off to Tulsa for the show, so it will be a while before I post again. Oh, the AR upper I bought in Vegas shot 3/4 with some scrapped up loads for the Mini-14's testing I did when I rebuilt it, so with loads built for new upper, it should shoot OK. Not to bad for $298.
Ed