6.5 x .300 Weatherby Magnum reloading issue

[Oh Mah]

Since your on here str6meat,could you send me your load data?I just want to see what youre doing thats all.my first im going straight off Barnes data.

76 grains of H1000

c.o.a,l 3.580

127 grain lrx bt bullet.


one of these days i'll find a pound of that US 869 AND TRY IT OUT.

[str8meat]

127 Barnes 3.603 us 869 88 grain. Never got to FPS on these loads didn’t see the accuracy. Friend of mine in Wyoming uses rl33 with the Barnes. Lights out he says, good luck finding rl 33

140 nosler accubond 3.568 88 grains  us869, these are seconds with a canelure 3275,3301,3309 FPS accuracy better

140 nosler accubond 3.713 88 grains us869 factory first 3323,3327,3356 FPS. Under an inch at 200 if I do my part. Go to load for me.

140 Berger hunting vld hunting 3258,3202,3202,3223,3254,3204 same load 3.652.

156 grain Berger vld hunting 85 us869 3065 no coal. Haven’t played with these much.

I was afraid the Berger of being to fragile on bigger game, bud of mine in Eburg killed a cow elk at 533 with my 140 Berger load and it was bang flop. Drt

I also have 130 scirocco to test as I feel they maybe a tad tougher than accubond. Dunno haven’t played with yet. But spring is still young

[Oh Mah]

Awesome data thanks

[b23]

i agree they stretch but why do they grow so much after sizing?

It's typical for brass to get longer, particularly in the base to shoulder measurement, during the FL sizing process if the die isn't screwed down far enough for the shoulder of the case to come in contact with the top of the die.  As the brass goes up inside a FL die it squeezes down on the sides of the case as it does that it forces the brass to actually get longer and it'll stay that way until the shoulder comes in contact with the top of the die.  Think of what happens to the water level of a plastic water bottle as you squeeze the middle of it, the water level rises.

That's why I asked about cam over because I always need my FL dies screwed down slightly past cam over before it'll ever push the shoulder back 1-2 thou and until the die is screwed down past touch the brass will come out with the shoulder pushed forward which is why your brass won't chamber after it's sized.

You're talking about your brass growing 20 thou in the sizing process which is extreme.  Are you measuring just the overall length of the case and it's growing 20 thou or are you using shoulder bump gauge inserts to measure base to shoulder and that measurement is growing 20 thou?  Either way, that's excessive and something doesn't seem quite right.  Did you maybe mean .002 longer not .020 ?

[Oh Mah]

no mistake they grew but not .02 after sizing a total over trim of around .02.which yes is extreme.i am a machinist(over 30 years)i measured over all length of cartridge,first i measured them after tumbling and they were average .005 over trim should have been fine after sizing.after sizing is where i started having trouble (didnt think to measure again but got good advice here and did)after full length sizing they measured (5 of them) on average another .015 over.

[bearpaw]

Since your on here str6meat,could you send me your load data?I just want to see what youre doing thats all.my first im going straight off Barnes data.

76 grains of H1000

c.o.a,l 3.580

127 grain lrx bt bullet.


one of these days i'll find a pound of that US 869 AND TRY IT OUT.

I just ordered US 869 from Powder Valley a couple days ago, you might check and see if they still have any. 

[mazama]

Do you lube inside of case neck, i was getting a lot of  drag on up lift on one gun loading for so lots of lube inside,tumble afterwards.

[b23]

I just ordered US 869 from Powder Valley a couple days ago, you might check and see if they still have any. 

If you've worked with US869 before you already know this but if not be aware US869 has a love hate relationship with those who use it, with most hating it. 

I use it in both my 338 Lap Imp and 30-338 Lap Imp and get along well with it but I've learned some things about its use along the way and until I figured them out I was a hater.  It has the burn rate of wet coal so use the hottest primer you can get and it likes a lot of start pressure.  I get best results using it when I'm seating very close to touching the lands and when I don't ES goes crazy and I'll have extreme ES numbers.

[Oh Mah]

Since your on here str6meat,could you send me your load data?I just want to see what youre doing thats all.my first im going straight off Barnes data.

76 grains of H1000

c.o.a,l 3.580

127 grain lrx bt bullet.


one of these days i'll find a pound of that US 869 AND TRY IT OUT.

I just ordered US 869 from Powder Valley a couple days ago, you might check and see if they still have any. 

just ordered 2 pounds of it,thank you bear paw i didnt even know about them until you said. 

[Oh Mah]

ok it appears i jumped the gun on this.

they still wont chamber.i have 4 rounds that chambered(1 of them was the test subject that worked last night)i fully loaded 1 and it chambered no problem so i did 15 others.checked them today and only 4 out of the 16 will chamber.

i marked 1 with a sharpie and it is tight toward the fat end about 3/8 of an inch up from the belted area.

any suggestions?

[TooTallMike]

Larry willis collet die.

You're getting the common bulge above the belt issue

[Oh Mah]

is it because its so hot,

[TooTallMike]

is it because its so hot,

No it's pretty common with all belted magnums the factory sizing dies don't get all the way down to just above the belt so it's keeps growing. The die itself is about 120$ but saves your brass so in my opinion it pays for itself

[BULLBLASTER]

I could contact the die manufacturer or try a different sizing die. 3/8 of an inch above the belt isnt in the area of the internet issue with belts. 

 I have loaded thousands and thousands of rounds of belted cartridges and never once had any issue caused by the belt.

Do fired cases chamber again before you size them?

[Oh Mah]

Larry willis collet die.

You're getting the common bulge above the belt issue

I love it,I will call them tomorrow.