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Temperature sensitive powder?

 
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  #8  
Old 10-26-2007, 02:34 PM
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Steve---just curious but I would think that shooting at 1k you would be paying VERY close attention to your extreme spreads as we all know an ES of 20fps in one condition is great but make that 60fps in another because the load was developed at 65 degrees but you are shooting at 90

Have spent many hours at the ranch shooting across the 35 and shaking my head at what powders will do.. One of the many things that Speedy taught me was to do this as there is no substitute for actual testing. I use H4350 in my LGs which is all I shoot right now but in my 6.5x284 it seems to shoot the best groups and exhibit the best ES numbers. The difference in 20fps and 60fps will knock you out every time with the vertical spread that is caused.
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  #9  
Old 10-26-2007, 10:39 PM
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This is the first load in any caliber that I have used RL 22 in. No experience at all with it. Thanks to all the replies and the experience shared, I have relaxed and am quite comfortable with this load, which is 56 gr with a 150 Smkhp and 250 BR-2 primer. Some loads just seem to sound and feel good when you shoot them. This is one of them. I will go ahead and chronograph a session with this load now.

It is my first 280. Oh yeah, it only has iron sights.

The first guy that asked me what I thought about the .280, I asked him if you neck a 30-06 down to 7mm, how bad could it be?

Again, thanks to all, Tom
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  #10  
Old 10-26-2007, 11:32 PM
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This is my question:




Would a reputable company like Hodgdon cook up a bunch of lies like the chart above shows, deceiving people in the most discriminating way, to make sales and would companies like Reloader and Vit etc. go along with such a farce that eventually puts them down as a lesser product? Wouldn't Reloader sue Hodgdon for lying like that? Is it possible? why would Reloader leave it alone when it would hurt them? Is it possible that there is more than some truth in it for Hodgdon to make the claims that they are making? Just asking?
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  #11  
Old 10-27-2007, 12:49 AM
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^^^^Because that's advertising. That's why Chevy, Ford and Dodge all say they make the best trucks. I've been shooting RL22 for about 5 years now and have had no problems. The load I developed was during 60-70 degree weather. I used the same load last season to connect on a cow elk over 600 yds. when the wind chill registered -20 degrees. Whatever velocity change there was, wasn't much. Also have shot antelope when it was over 90 degrees and didn't experience any pressure or significant change in velocity.
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  #12  
Old 10-27-2007, 01:55 AM
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I shoot r22 in my 300 win mag. I have found not much differ at all. I dial the same cold or hot and am able to still hit all my targets which are smaller than vital zones on deer. I have however found that it does differ accasionally in lots. So buy a 5lb or kkep track of your lot # and there wont be a problem there. I have tried h4831 and didnt get as much velocity with no accuracy gains, with h4350 i got velocity increase but lost some accuracy. I was worried about it to from all the temp hipe but im really glad i stuck with it in my 300 mag it is a good powder.
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  #13  
Old 10-27-2007, 05:34 AM
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Hey Tom,

I hav e used several of the RL powders over the past 18 or so years, mainly 19 and 22. I have shot them in several calibers from mild loads up to top end primer ironers. My experience with them is that if your on the upper end of the spectrum you will notice things much more than the middle ground loads. My standard load for my 25-06 was 56,5grs of 22 lit by a Win/WLR pushing a 115gr partition out at 3150fps. In my particular rifle this was not the absolute top end load but about 1.5grs shy. I shot it in temps ranging from mid 20's up through 100+ and it held it's groups fine and the only noticable differences were on the low temp end where it printed about 1/2 - 3/4" low at 300yds.

With the 19 I noticed a bit more swing but still it maintianed consistancy in groups only printed a little higher or lower depending on the temp. This load was in a 7 mag shooting 162gr Hornadies. This load was on the edge of top end and during temps of 90+ would start to flatten primers, however below that it worked very well and showed no other signs.

The only problem I ever really had with either of them was with a 30-06 load using a compressed charge under a 165gr BT. I worked it up in 90+ degree weather and it rocked shooting super small groups out to 450yds where it was grouping under 3" easily. I had worked it up and zeroed the rifle for one particular buck we had been seeing out around 400yds, and wanted to anchor him in his tracks. When hunting season rolled around I had a shot on a different buck just over 300yds across our back pasture, temps were in the low 40's and dropping. When I touched the first round off I thought I had grabbed the wrong ammo, the second round sounded like a squib load. The buck never even got alarmed from either of them. I set that rifle down and finished the morning with the 25 which I had brought along for something up close. After things warmed up the load shot as usual.

If I were you and shooting that particular load I would purchase a bulk of that powder in that lot. I have seen way more noticable differences in lot variations than anything else with these powders.

Now RL-25, well thats a different story.
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  #14  
Old 10-27-2007, 10:17 AM
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In what way is it a different story?
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