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300wm & 200gr Accubonds...

 
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  #1  
Old 08-14-2006, 07:57 AM
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300wm & 200gr Accubonds...

....finally got out over the weekend to try some accubonds and was pleasantly surprised to see the same results as many of you have expierenced [img]/ubbthreads/images/graemlins/smirk.gif[/img].

Gun is a 300wm Rem700 Sendero w/a 25" barrel. Leupy 6.5X20LR. nothin fancy, had the action/lugs lapped and brake installed a while back nothing else....oh, i skim bedded it a month ago...

I shot six different groups at 100yds. Three with IMR 4831,70gr,71gr,72gr, and three with R-22,69gr,70gr,71gr. The best results being with 72gr of IMR (.545 three shots) and 71gr R-22 (.520three shots). The R-22 group was a perfect vertical string (barrel heating i guess) and the IMR was purty little cloverleaf [img]/ubbthreads/images/graemlins/grin.gif[/img]. didnt have a chrony for the fps but pressure signs are minimal(minor primer flattening/no cratering/no ejector marks)

...even out shot the guy next to me w/a 6mmBR... [img]/ubbthreads/images/graemlins/wink.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img]anyways...

heres my question for some of you...what load do i go with to hunt deer this october?

i have heard about R-22's sensitivity to temp but exactly how bad is it?? what about the IMR 4831 is it temp sensitive too.

I have loaded up ten of each of these two loads to run across a chrony this weekend to see which is the most consistent, but i would like to ear more about each of these powders and which is more temp stable... preferrably from expierenc, not what the mfr says [img]/ubbthreads/images/graemlins/crazy.gif[/img]

Thanks in advance for the input...
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Old 08-14-2006, 08:10 AM
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Re: 300mw & 200gr Accubonds...

WE have a 270 Win shooting stiff loads of RL-22 accuracy is great. Velocity drops off as temp goes down sine would say a bunch (100 FPS or so) from summer when loads were worked up.

Accuracy does not change. A couple of clicks up from summer to winter does the trick. Deer to 500 yds (so far) haven't noticed the difference.

A suggestion regarding your RL-22 group. If pressure signs were minimal, go up at least a half grain or maybe a full grain depending on your comfortability. Then shoot another 3 shot group and see if the group switches to horizonal from the vertical string.

If it switch to - from | then drop back half of what you increased and you should get a nice little o. Its been working for me.....

Keep us posted on your velocity checks. Thanks
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Old 08-14-2006, 02:54 PM
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Re: 300wm & 200gr Accubonds...

longshooter;where were you seating your bullets?out to rifling?,standard loading data oal?? [img]/ubbthreads/images/graemlins/grin.gif[/img]
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Old 08-14-2006, 03:46 PM
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Re: 300wm & 200gr Accubonds...

longgun
I shoot 71 grs of Re 22 under the 200gr Accubond, this load was developed when temps were in the 30s/40s and shoots in the .4-.75 range at about 2930 fps. I have shot the same load some when the temps were in he upper 70s to lower 80s, didn't have the chrony but I did notice the groups were a little larger .75- 1". Can't say for sure it was a temp. sensitivity thing, could have been mirage, but point of impact stayed the same.
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Old 08-15-2006, 05:32 AM
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Re: 300wm & 200gr Accubonds...

My .300 win loves 180 or 200 Accubonds with H-1000. I have never tried them with RL 22 or IMR 4831
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Old 08-15-2006, 01:01 PM
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Re: 300wm & 200gr Accubonds...

i had them seated .020 off...
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Old 08-15-2006, 01:15 PM
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Re: 300wm & 200gr Accubonds...

never have tryed H-1000...

all i have ever shot has been R-22 or IMR4831. just here recently have i gotten into the larger for caliber weight bullets. i used to shoot 165 BT's religiously(around .7/.9 groups)...but i really like the groups this thing has been spitting with these 200AB's [img]/ubbthreads/images/graemlins/grin.gif[/img]
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