Thread: 6.5 PRC Load Development Begins

Originally Posted by dannyb

Not in my experience

Same for me too. My 6.5prc liked .050" jump and 0.120" jump with the 143s

Originally Posted by DBD

I'd like to give them a go in the Saum, have had a look at them but never got any.

Drop me a DM with your address.

Interesting 9 shots. 2.935" COL seems good.



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ELDX?

Yes.

Time to go shoot some deer with it.

Yep load development finished.

Originally Posted by Tikka7mm08

Interesting 9 shots. 2.935" COL seems good.



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Does your Labradar function set that far back from the muzzle? I normally have to have muzzle end in line roughly with both rifle and pistol, I use an external mike with suppressor.

Functions fine with setting at 12". Reads out to 100y. I have a RAT for suppressors...works better than the mic.

tried out the new magnetospeed this morning and happy to now get a result for every shot unlike the optical one I had. Groups are pretty good considering it hangs on the end of the barrel. Now going to stick with 60gr and play with seating depth a little to try get the ES down.

Originally Posted by matto1234

Attachment 205755Attachment 205756 tried out the new magnetospeed this morning and happy to now get a result for every shot unlike the optical one I had. Groups are pretty good considering it hangs on the end of the barrel. Now going to stick with 60gr and play with seating depth a little to try get the ES down.

I could be wrong but I have always used charge weight to get ES down then fiddled seating depth to improve accuracy....with that in mind I would be looking at somewhere between 59.6-60 going off your results and tune accuracy with a seating depth ladder....just my 2 cents

:edit I see your test was virgin and then 2x fired brass.... 60 does look promising as long as pressure is good, but still say seating depth will tune accuracy not so much ES

Are you guys head shooting ants??

Originally Posted by veitnamcam

Because you effectively have a bigger case if it's not half full of projectile.
Not going to be as noticable in something with a large case capacity.

I think of it like a 1600CC engine and a 6000cc engine both being fed say 10 mls of petrol per second.... the 1600 will be reving its nuts off and the big 6ltr will be at idle.

the .270w is a classic for this...the short throated ones wont take anywhere near as high of powder charge as the long throated ones.....the weatherby line of cartridges had a long throat for similar reason..the projectile could start moving easier in effect creating a bigger cartridge space to lower pressure.
or so I believe.

Originally Posted by dannyb

I could be wrong but I have always used charge weight to get ES down then fiddled seating depth to improve accuracy....with that in mind I would be looking at somewhere between 59.6-60 going off your results and tune accuracy with a seating depth ladder....just my 2 cents

:edit I see your test was virgin and then 2x fired brass.... 60 does look promising as long as pressure is good, but still say seating depth will tune accuracy not so much ES

Oh well in that case I'll leave it alone and go head shoot some ants ��

Originally Posted by matto1234

Oh well in that case I'll leave it alone and go head shoot some ants ��

nothing wrong with tuning with seating depth....you may go from clover leafs to ragged 1 hole groups....