JohnV wrote:I can see some potential because even though ADI powders are the least pressure sensitive there can still be some pressure rise due to extra heat .
If the loads are only warm but not max then it should be ok but I have .223 loads with AR2206 that start popping the primers on a hot summers day out West .
So my advice is keep the loads developed in a cooler climate down a bit to a sensible pressure and that gives you a buffer zone and no problems should emerge .
in2anity wrote:It’s the air gap in the cartridge that can help keep reduce your pressure spike
bigrich wrote:JohnV wrote:I can see some potential because even though ADI powders are the least pressure sensitive there can still be some pressure rise due to extra heat .
If the loads are only warm but not max then it should be ok but I have .223 loads with AR2206 that start popping the primers on a hot summers day out West .
So my advice is keep the loads developed in a cooler climate down a bit to a sensible pressure and that gives you a buffer zone and no problems should emerge .
their at max, but i've seated out 50 thou further than factory col , which should reduce preasure and allow extra powder. i'm using 67gn of 2209 with lapua 285 "mega" projectiles .9.3x62 data is in the low 40 000psi due to older rifles still kicking around . my rifle is a sako 85 . should handle higher preasure easily .also my 9.3x62 has very generous free bore , i,ve seated dummy rounds 150thou out over listed col and still didn't contact the lands. i have no preasure signs , so it should be good
Blr243 wrote:Great minds think alike I been wondering about your pill choice and i thought to myself in the absence of big frontal diameter that you would have in something like a 4570 , a Barnes predictable opener would be my choice in the 9.3. . And the I just read that your useing a Barnes ... how many more sleeps till the hunt ? And I reckon u won’t sleep at all the night before ... you might have to throw down a couple of scotches to stop your mind racing
in2anity wrote:The lugs won't let go on a Sako85 with 09 and your pill - they are a triple aren't they? And they also have a gas cut on the face too don't they? That's where the gas will flow in if the case fails... down the side of the bolt.
bigrich wrote:weighed a prepped norma case , 185.4 gn . lapua 196gn , rws 199gn averaged over five cases per brand . not wanting to tempt fate , i put the loaded norma rounds aside and went back to rws brass for this particular load . the loaded norma will be a "soft" load , which is preferable to a hot one . the norma load will get used at a rifle comp now
in2anity wrote:bigrich wrote:weighed a prepped norma case , 185.4 gn . lapua 196gn , rws 199gn averaged over five cases per brand . not wanting to tempt fate , i put the loaded norma rounds aside and went back to rws brass for this particular load . the loaded norma will be a "soft" load , which is preferable to a hot one . the norma load will get used at a rifle comp now
TBH I haven't loaded much Norma brass - but I haven't noticed much difference in volume between Lap and Norma (and ADI) - all are thick with lower volume than say Winchester. We just use Winchester whenever we want to hotrod because of the larger volume - a bit more room for powder for bipod novelty shooting with heavier, unlimited weight pills. Otherwise, I always just treat the first three as the same pressure - but obviously group the headstamp per stage.
Blr243 wrote:Regarding screwing up a hunt. I did that. Navigating tollly stuffed me on a huge block. And it was a three day drive to get there. Never again will I make that mistake... it also made me think about other things that could go wrong. So Now I’m very fussy about planning so that I can’t come u done like that again. I want all my bases covered ,, when you are guided I guess there’s less to worry about. I guess heat management hats blisters and boots are very critical ... maybe spare boots too CD b a good idea. I staked my foot on a hunt on cape York at least a decade ago. That pulled me up big time. Too much barefoot bow hunting
animalpest wrote:Getting a few extra ft/lb rather than reliability is not the way to go. The buff don't know the difference.
I had some loads that were on the upper end with my 375 H&H and low and behold, a change in case brand resulted in a sticky bolt.
You don't want a sticky bolt when buff shooting
Blr243 wrote:I Used to wear Oliver’s. Very comfy. I hunted the cape in august once. Surprising how warm it can be up there even those bris is still bloody cold. Even at that time of yea I struggled to find drinking water on a creek walk once. A mate who used to hunt the cape with me reckons the N T is significantly hotter ... good luck on your trip