load evalulation

[Chetc]

was out shooting my ar 15 today, i-8 twist it is a new rifle with about 25-30 rounds thru it, all shooting done at 100yds with a 12x scope. loaded 10 each. 26gr varget 60gr vmax, 26gr varget 55 nosler BT, 70 Berger 24gr varget. 55gr all these loads had a WSR primer, 55 vmax RL-15 rem 7 1/2 primer. all these loads shot about the same group around 1 1/4" or so, then i had some loads i loaded 12yrs ago this load is sierra 53gr hp match, 25.5gr H335 powder and a BR4 primer this load surprised me, groups under 1/2" i am curious what part of this load got its accuracy, i dont have any more H335 and not sure if its still available, and the 53gr bullet with a 1-8 twist ?? would the BR4 primer enhance the accuracy in the place of WSR primer. was hoping to get the heavier bullet to work.

Chet

 

[Casefull]

Could be your setup liked that particular bullet. I would be looking at the brass differences also. Reloaded on same dies, etc. My experience is the powder and primer are less important than consistencies in neck tension, neck only or complete resizing...and so on.

 

[Hondo 60]

There's no way to isolate the best parts of those loads.

You'd have to take each component separately & measure it against the standard.

Because each weapon is different, what works GREAT it yours may give a 5" group in mine.

Sorry, I know that's not the answer you were looking for. But it's the truth.