hi, just seating here looking at data and thinking it over.
i got a decently performing 69SMK load, it shoots well on both cold and hot barrel. but it is on a medium to slow side.
the load is at 24.3gr varget, gives from 2722 to 2780 fps. it seems that there is an other node, at 2900fps there that groups OK on the cold gun:
but it seems when the gun heats up and speeds up - a faster load spread deteriorated much more, can be seen below.
those groups below were at the very end of the session when barrel got quite hot.
also an interesting thing that ES/SD on the weaker load is far from great, yet it still groups better.
so i am just deliberating with myself - is there any practical reason to go with a hotter load in mid 2900fps, or is it more sensible to stick with the 24.3?
it still should be ok for up to 600yds, i think, and i do not think i would need it, ever, going further.
i will probably play more with 25.5gr loads just to see what gives, but, not sure if it makes any real practical sense.
any comments?
i got a decently performing 69SMK load, it shoots well on both cold and hot barrel. but it is on a medium to slow side.
the load is at 24.3gr varget, gives from 2722 to 2780 fps. it seems that there is an other node, at 2900fps there that groups OK on the cold gun:
but it seems when the gun heats up and speeds up - a faster load spread deteriorated much more, can be seen below.
those groups below were at the very end of the session when barrel got quite hot.
also an interesting thing that ES/SD on the weaker load is far from great, yet it still groups better.
so i am just deliberating with myself - is there any practical reason to go with a hotter load in mid 2900fps, or is it more sensible to stick with the 24.3?
it still should be ok for up to 600yds, i think, and i do not think i would need it, ever, going further.
i will probably play more with 25.5gr loads just to see what gives, but, not sure if it makes any real practical sense.
any comments?