Powder for a 357 at 100 yards?

[CROWMAN]

I'm trying to develope a load for shooting copper washed 159gr heads out to 100 yards.
I've tried Unique up to 8.0gr load and still shooting a few inches low.
I have GM3 powder, but not sure about loads at that distance.

I would like to get another powder to try, partly for perhaps a better load and these days I have found it's good to have a choice of powders in each calibre you load for in the event of shortages.

Any opinions on Blue Dot or Vhit N320 at 100 yards and what weight of powder?

[223AI]

I use H110 and it does well with jacketed bullets, have a 'small deer' legal load at 1270 ft-lb with 110 gr bullets so it has plenty of poke, also not on the REACH list

[DedIdick]

You say you weren't happy with 8 gns of Unique??? 6.5 gns of Unique works OK in my 24" barreled 357.

[CROWMAN]

Very interesting!

With the same type Marlin, and using 8grs Unique with a copper washed 159gr head with CCI small pistol primers, Starline cases, my rounds are approximately 2 to 3 inches low at 100 yards.

I wonder why the difference? Do you pack the cases at all?

[DedIdick]

Very interesting!

With the same type Marlin, and using 8grs Unique with a copper washed 159gr head with CCI small pistol primers, Starline cases, my rounds are approximately 2 to 3 inches low at 100 yards.

I wonder why the difference? Do you pack the cases at all?

That's what the rear sight is for.
Is the grouping OK, that's the important bit!

[CROWMAN]

Due to age, eye sight not good enough for using rifle sights I'm afraid, so a scope is used.

Would still be interested in other powders that forum members use for this distance.