600yrd .30cal powder?

[nitrohuck]

Hey all,

Am currently reloading for both 7.5x55 Swiss and 7.62x54r and having a blast so far, and am curious about pushing boolits a bit faster...

So far AA#7 and 2400 have produced good loads for up to 200yrds, but am looking to throw cast rounds a bit further than that at my range...

What powders do you find suitable for shots up to 600yrds? So far IMR4895 has caught my attention, and I also have RE17 that I use for jacketed, does anyone have any other powders to suggest?

Mostly plan on shooting rounds in the 200gr weight range

[nhrifle]

I use IMR 4350 in my 30/06 with the Lyman 314299 with good results. The powder is fairly slow, so it is easy on cast boolits.

[Larry Gibson]

I use AA4350, RL19, H4831SC and RL22 for such loads. If load density is less than 80% I use a dacron filler.

Larry Gibson

[HollowPoint]

Hey Larry:

When you use any of the powders you listed, what kind of velocities can one expect when pushing the two-hundred grain cast boolits mentioned by the OP? I mean, in comparison to the average velocities using 2400 powder and say, 16-18 grains.

P.S. I know that accuracy at higher velocities is another subject all together. I'm only curious about velocities with these different powders at this stage of load development.

Just curious.

HollowPoint

[Larry Gibson]

In .308W to '06 size cases with a 200 gr cast I expect 2000 - 2100 with any of those powders and maintain 2 moa for 20 shots. With 12" twists I can push that to 2300 fps for the same 2 mos or less for a 20 shot string.

Larry Gibson

[nitrohuck]

hmm might give RL19 a try out of the k31... what would probably be a good starting load for that with a ~180-200gr cast round?

[GabbyM]

The RL17 you have should work well in your calibers.
I bought some IMR 7828 to try with 200 grain Lyman 311299 from a 30-06. Pretty slow powder.
Your smaller cases probably would not hold enough to achieve your velocity goal.
600 yards is getting out there. B.C. on a Lyman 311299 is .377. How fast would one need to get the boolit going to keep it supersonic to target?

[CWME]

Starting at 2100 fps with the supplied 311299 .377 BC the boolit would be running 1137 fps at 600 yards. 30.6 MOA drop from a 100 yard sight in.

[pacomdiver]

i shoot a monster mosin, i use IMR4064 with the sierra 174 match king bullet in ppu brass and cci primers, its running just short of 2500 fps

[GabbyM]

Starting at 2100 fps with the supplied 311299 .377 BC the boolit would be running 1137 fps at 600 yards. 30.6 MOA drop from a 100 yard sight in.

OK so when I get my Cu enhanced alloy 311299 running at 2350 from 30-06 rifle over my load of IMR 7828 I'll be way good to our 500 yard line in Effingham Illinois.

That is some high expectations. For sure. Will give it a shot . Schedule pending.

[Green Lizzard]

i cant even see 600 yds but i think any start load data from a jacketed bullet book would work, they sure look good at 200 with a 15+ alloy