Nice group. What make is your brass?
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Nice group. What make is your brass?
Norma, unfortunately the load that shot that group would likely destroy the brass in 2 or 3 firings I reckon. That was 2730fps avg with an es of 5fps but massive pressure signs....well sort of actually this load didn't create heavy bolt lift but the one below and above it did which is bizarre. But of most concern is that the base of the case, seems to have deformed in some way (not visible to the naked eye) as the cases from about 61.5gn up all seem to be like this and get worse the hotter the load.
What is incredible is the velocity I got at book max was only 60fps slower than book max predicted and there data is based on a 24" barrel.
Will be interesting to see what the saami spec ladder produces
Id be looking at headspace if its inconsistent pressure
Sometimes cases are hard to get into the shell holder if the swipes or ejector marks are raised. I rub them lightly on some fine emery paper.
the 200eldx's- are you measuring to ogive or to tip? check that your not in to the lands at mag length
depending on how old they are Hornady had a few issues with differing ogives on some of the early batches and was screwing with my loads too.
These are fairly new, definitely weren't jammed into the lands, I measure to the ogive.
My jam or ogive measurement is 2.300" I was seated at 2.244" so effectively 56 thou off the lands not close by anyone's standards :yaeh am not durnk:
The new ladder I had to work backwards as I only had a COAL measurement of a factory loaded round which was 2.875" COAL which worked out at 2.165" ogive.
Ughhh new barrel and new brass.....I'd rather workmwith a fouled barrel and 2x or 3x fired brass :D
Tomorrow is a new day and I'm confident I'll get to the bottom of things :thumbsup:
Try a box of Hornady Precision hunter in it. Once you get over the sticker shock!! It has shot well in all the 300wsms I have tried it in
If it shoots OK then there's your over all length.
Load 300WSM at mag length, if you load them out like we all like to think is best, its often not!!
Funny enough at 60.5gn I was getting 2652fps with an ES of 21fps so your not far off the money.....I think part of my issues with weird spikes is due to inconsistent sizing of the new cases, after tomorrow's ladder will try annealing the once fired cases and resizing them.
In answer to your first question no I don't have GRT
Funny Hornandy load data shows a max load of 61.7gn of h4530 which is 2209 equivalent as far as i know.
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I think you’ve read that wrong Danny. H4350 is 61.7gr IMR4350 is 63.1 gr. H4350 is 2209. IMR4350 is close but different.
Pressure goes up, 0.25 shorter drops 2.5 grains for the same pressure
@PerazziSC3 beat me too it
......:oh noes: might have to pull a few then :psychotic: increase in pressure will increase velocity too ?
I have loaded a new ladder at saami COAL from 60gn-62.5gn going up in .5gn increments, I will pull the 62.5 and 62gn loads I am skeptical I will even get that high in the ladder as will be on high alert for pressure signs after todays session.
For everybodies benefit - and to give Danny something to fiddle with when he can't play outside with his noisy stick:
https://www.grtools.de/doku.php
Have a read of the announcements on the home page. Some email services are causing problems with registration emails.
Unfortunately Gordon who got this going passed away in January. I sincerely hope it can be carried on by someone. I will happily contribute to costs if that is the case. I would even pay a subscription if that's what it takes - it's a fantastic tool. And it's free!!!
Range report....
60gn: 2660fps avg 18fps ES
60.5gn: 2673fps avg 20fps ES
61gn: 2681fps avg 23fps ES
61.5gn: 2695fps avh 25fps ES
61gn shot the best group and would be about 3/4" but it's not really good enough, gonna shelve the 200eldx development for now and wait for Bryn's Targex bullets to turn up.
Pics coming
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You dont want to use the 168's?
168gn amax or eld m in you short 300wsm
Sell it, must be a dud
No chance.....if @TARGEX bullets dont shoot the way I want, I will just load up some 180gn interloks and use them until I can get the projectiles I want.
In my 20" 300saum I use 168 NBT. Devastating at all rangers,
These are available, and they have them in 195 grn too. They work well on game. https://www.reloaders.co.nz/shop/Rel...68gr+100s.html
I expect though that the Targex you have coming will be good. Ive never tried a Targex bullet that wouldn't shoot.
Another option to consider is the Speer 180gn SPBT or Speer hotcore, but the later is flat base so pretty avg BC. The SPBT has a reasonable bc.
I’ve not run these in 30cal but have run the equivalent in 7mm. The HotCore flatten everything out to 300-400 yards. The SPBT are more frangible, more akin to AMAX. Best thing is they in stock and only 70-80 cents each. :thumbsup:
I do happen to know where some of them 165 or 168?? NBTs are sitting if you want them bud....... fark they would really be the ducks nuts at speed.... be like the 125s are from .308 yip cannot see a downside to using them LOL.