Hot days and hot loads seem to leave a lasting impression.
7 PRC/7SAUM Velocities
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depending on what powder you use, some can be more lasting than others.
I shoot in 90* a fair bit, not as much as I used to to still do. I like to work up a load during the heat of summer, once I find what traditional signs will tell me is top end speed I back off 100 fps. In doing so I'm covered if I happen onto a hotter lot of powder or if I shoot on a really hot day.
In doing it this way I know if the load is fine pressure wise on my hot days that it'll be fine on the sub zero days.
That said, I didn't see from you guys posts where you're actually doing speed tests.
*same 5 cases for your hot and cold tests
*same can of powder for your hot and cold tests
*same lot of primers......................................................
*same box of bullets......................................................
*leave the ammo out in the elements be it cold or hot
*test for speed on your hot or hotter ends, then do the same on your cold or colder ends.
I've been doing tests like these for 3 or 4 decades, it's told me a lot regarding what temp stability is or isn't.
Lastly, in the best of worlds do this with the same components on 2 or 3 different days to account for any possible speed changes via sunlight conditions.
IMO, if your load is popping primers or worse on your hotter days, then you don't have a powder stability problem then your load/loads are too blessed hot to begin with.
Bottom line, we all have our ways of doing our tests. I feel that the way I do it is about as good as one can get (big surprise I like my way the best eh..........snork)
Life's short, hunt hard!
In doing it this way I know if the load is fine pressure wise on my hot days that it'll be fine on the sub zero days.
That said, I didn't see from you guys posts where you're actually doing speed tests.
*same 5 cases for your hot and cold tests
*same can of powder for your hot and cold tests
*same lot of primers......................................................
*same box of bullets......................................................
*leave the ammo out in the elements be it cold or hot
*test for speed on your hot or hotter ends, then do the same on your cold or colder ends.
I've been doing tests like these for 3 or 4 decades, it's told me a lot regarding what temp stability is or isn't.
Lastly, in the best of worlds do this with the same components on 2 or 3 different days to account for any possible speed changes via sunlight conditions.
IMO, if your load is popping primers or worse on your hotter days, then you don't have a powder stability problem then your load/loads are too blessed hot to begin with.
Bottom line, we all have our ways of doing our tests. I feel that the way I do it is about as good as one can get (big surprise I like my way the best eh..........snork)
Life's short, hunt hard!
especially if your load is too starchy to begin with...
lol I have never popped a primer. I just choose to use powders that I know won't affect my loads in the heat.
And I only buy powder in 8lb kegs so yes I'm using the same lot of powder and same bullets. It's all the same lot of brass but I only use 25 pcs of brass at a time until they run out and then move to the next 25 pcs.
I'm just going off of what I have experienced. I don't hunt in the summer time. I hunt in the fall and winter. I rarely shoot in the summer anymore but if I do, I know RL23 with my load will not be affected.
And I only buy powder in 8lb kegs so yes I'm using the same lot of powder and same bullets. It's all the same lot of brass but I only use 25 pcs of brass at a time until they run out and then move to the next 25 pcs.
I'm just going off of what I have experienced. I don't hunt in the summer time. I hunt in the fall and winter. I rarely shoot in the summer anymore but if I do, I know RL23 with my load will not be affected.
i've run R23 in 2 rifles since the sweltering miserable heat of late summer, and i'm very pleased with accuracy and stability,
6.5 Max/153.5 hybrids
25 Sherman LA/115 Ballistic Tips
6.5 Max/153.5 hybrids
25 Sherman LA/115 Ballistic Tips
Will.284
Well-Known Member
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Will.284
Well-Known Member
7 prc federal lrmbr primers 68.8 grains h1000 175 hornandy eldx bullet 2982 fps ish 4.4 sd 22 inch Oregon mountain barrel savage 116 stainless factory stock Burris 5-25x50 signature hd glass. This was 200 yard target 10-23 mph wind 57 degrees in central Mt today
Enjoying seeing results, just screwed on a 20" 7prc barrel to my ARC. Hopefully I can get out and start the break in process soon.
Will.284
Well-Known Member
I had great success with h1000 and 175 eldx hornandy and almost as good results with 168 Bergers
What's your barrel length?
Post your results after your range trip if you don't mind. My brother just bought a 7 prc Seekins Element so I should have some data soon with a 22" barrel.
Will.284
Well-Known Member
22 inches
Welding442
Member
- Joined
- Sep 16, 2012
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First 10 shots out of my 7 prc 22" proof with hornaday factory 175 eldx
