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US 869 Lot to Lot differences

 
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  #15  
Old 11-30-2006, 01:16 PM
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Re: US 869 Lot to Lot differences - Hey Kirby

This LRH stuff has been a pain in the ***** since I discovered it a couple of years ago. It's cost me $, time, anxiety and lots of time on the mountain [img]/ubbthreads/images/graemlins/laugh.gif[/img]

This whole thread ought to be deleted. It does nothing more than reveal my learning curve and just how ingrained the old throw some powder in, seat a bullet and point and shoot can become after a few decades. [img]/ubbthreads/images/graemlins/crazy.gif[/img]

What I've found out is simply that this 8# lot of powder is a bit slower than the 1# lot.

I loaded up two loads one w/the 1# lot and the other with the 8# lot. Everything was exactly the same. The 1# went 3353. The 8# went 3268 this with the 169 RBBTs.

I then went on to shoot a 0.3" 200yd group followed by a 1 MOA turret adjustment that put the shot spot on. Average fps = 3280, ES = 30, SD = 15.

Ok, I'll quit whinnin' and go see if I can find some yotes!
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  #16  
Old 12-01-2006, 05:10 AM
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Re: US 869 Lot to Lot differences - Hey Kirby

[ QUOTE ]
"It does nothing more than reveal my learning curve and just how ingrained the old throw some powder in, seat a bullet and point and shoot can become after a few decades. [img]/ubbthreads/images/graemlins/crazy.gif[/img]


I then went on to shoot a 0.3" 200yd group followed by a 1 MOA turret adjustment that put the shot spot on. Average fps = 3280, ES = 30, SD = 15.

Ok, I'll quit whinnin' and go see if I can find some yotes!"

[/ QUOTE ]

Hey Roy,

don't sweat the small stuff. I was in a very similar situation, not only with the loads, but also with the damn 30" long barrel. When you go from shooting standard factory rifles with up to 24" tubes to something as precise and long as the .270 AM is, it is definately going to throw you a curve. Not only did I have to adjust the loads for the differences in our conditions to what most others are getting, but I also had to learn to shoot that rig at the same time. Sort of like changing more than one thing at a time in a load while working it up, your just not quite sure if it's the load, the gun or you.

Sounds like you really have a handle on it now though. Keep up the good shooting and find you a yote to clear out some frustrations on.
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  #17  
Old 12-25-2006, 07:47 PM
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Re: US 869 Lot to Lot differences - Hey Kirby

Roy, I know exactly what you are talking about, the crap stinks and velocity is all over the place. Makes it tough to get a real good BC. Using 92.5 of H-869 was getting velocities in strings like this: 3278,3339,. At 94.5 was getting 3322,3376,3297. What kind of s--t is this. That's why I started tinkerin with AA8700 and told you I would post something after a little more testing. So far I'm impressed but I want to check out the temp sensitivity.

270Am
169 WC
Fed 215
95grs. of AA8700
70*
30.9
68%
3328,3325 on lands
3313,3318 with 10k jump
3312,3308 with 20k jump

Tim
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  #18  
Old 12-26-2006, 11:08 AM
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Re: US 869 Lot to Lot differences - Hey Kirby

Wonder if we could get Richard to make some 200+ grs in 277? Maybe in an off moment (yeah, like he has some)he could squirt out a few...

In my 338 RUM US 869 is achieving ESs in the +/- 1s and 2s w/the 300gr SMK.
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  #19  
Old 12-26-2006, 03:50 PM
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Re: US 869 Lot to Lot differences - Hey Kirby

I have a pound of 869, haven't shot any yet, was waiting till I get this deer hunting out of the way to test it did open it up and take a whiff, smells like powder, same as the other stuff I have.
I was looking for something less temp sensative than WC872, but it only affects things when its hot, doesn't seem to slow down much when its cool/cold, may just stick with it long as I'm not missing!
JS
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  #20  
Old 12-26-2006, 07:13 PM
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Re: US 869 Lot to Lot differences - Hey Kirby

I went on a sniffing expedition to all of the local stores that sell US 869. Every 1# and 8# cannister sniffed smelled just like mine. Almost but not quite on par with sniffing an open bottle of finger nail polish remover.

It shooting great w/169s in the AM. I'll have to try some in the PM [img]/ubbthreads/images/graemlins/blush.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img]
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  #21  
Old 12-26-2006, 07:27 PM
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Re: US 869 Lot to Lot differences - Hey Kirby

Tim/TX

Here's this afternoon's numbers.

195 WCs

95 gr US 865 - on the lands 3097/3106/3057
95 gr US 869 - 20K Jump 3080/3083/3047
95.5 gr US 869 - 20K Jump 3090/3067/3097 Touch of stiff bolt lift on the 3090/3097 shots.

No primer pocket expansion.
Same three cases used for all shots. Weights 277.1/277.4/277.4
Temp 42.2
Hg 25.384 (29.824 @ sea level)
Hum: 58%
Solid overcast

The low velocity shot was not usually the widest shot in the group. Groups were poor. @ 200 yds two shots were at about 0.7" the third one made the groups average about 1.6". Smallest group was 1.4" (on the lands) largest group was 1.7 with stringing (shots in straight line, up and to the left) 20K jump and sane load as the 'on the lands'.
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