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Results on 300 win mag.

 
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  #15  
Old 02-10-2005, 09:14 AM
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Re: Results on 300 win mag.

From what I have found you need to test your load at the range you are going to shoot. I would skip the 100 yard target and work your loads up from the 200 yard mark. Your rifle may not like BoatTail bullets either but before you come to that conclusion I would try R-22 and a Fed 215 primer. 100 yards is to close most bullets are still sleeping at that range. 200 yards or 300 yards gives the bullet enough time to come alive. My 7mm STW will shoot 160 Accubonds in the .2's at 100 yards. I took that same load out to 500 yards and it was a 6 inch group. [img]/ubbthreads/images/graemlins/tongue.gif[/img] I then took that same load and at 300 yards it was a little over a 3 inch group. I know it was not my shooting because I was also shooting the 175 Sierra SPBT and it shot about a 1 inch group at 300 and a 2 inch group at 500 yards. The kicker is the Sierra at 100 yards shoots in the .6's to .7's but it shot better at longer range then the Accubond. I would also lose the Rem bullets. From what I have found they shoot well at 100 yards or closer but at longer ranges their accuracy goes down the crapper. Also with a big case like the 300 win you are going to want your load density's above 80% I do not believe that IMR-4350 will give you that. Slower Powders will give better velocity and better Accuracy. I would also try either the 180 Hornady Interlock or the Sierra 180. You may even want to pick up a box of 200gr Accubonds. Just keep at it you will get the rifle to shoot.
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  #16  
Old 02-11-2005, 03:57 PM
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Re: Results on 300 win mag.

In my opinion 300 WM=RL22
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  #17  
Old 02-11-2005, 06:14 PM
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Re: Results on 300 win mag.

Is RL-22 temperature sensitive?
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  #18  
Old 02-11-2005, 08:26 PM
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Re: Results on 300 win mag.

Yes, RL22 is temp sensitive. Look on Hodgdon's web site under extreme powders and it has graphs of temp vs. velocity. Hodgdon extremes vary approx 10 FPS over a 100 degree temp spread whereas RL22 and IMR powders varied as much as 100 fps.
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  #19  
Old 02-11-2005, 08:58 PM
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Re: Results on 300 win mag.

[ QUOTE ]
Yes, RL22 is temp sensitive. Look on Hodgdon's web site under extreme powders and it has graphs of temp vs. velocity. Hodgdon extremes vary approx 10 FPS over a 100 degree temp spread whereas RL22 and IMR powders varied as much as 100 fps.

[/ QUOTE ]
Shilen30,
you have obviously been influenced by Hodgdon propaganda telling you that there EXTREME powders are not temp sensitive ,this is bull feces. it is just that some powders are more temp sensitive than others. RL22 is not really very temp sensitive but it's drawback is that it does vary from lot to lot ,find a lot you like and buy a lot of it.
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  #20  
Old 02-11-2005, 11:17 PM
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Re: Results on 300 win mag.

Yes, there may be some propoganda, but please give me your scientific data that proves otherwise, or anyone elses for that matter. If there is published data, such as the data put out by hodgdon (do you really think they would make it up considering the law suits that would so easily stair them in the face?) I want to know about it in all honesty. Believe me, I have stronger ties to alliant (ATK) and the people that develop their powder than most in this forum. Hey, RL22 is great stuff. I swear by it with the 180 grain bullets. I have personally seen differences in bullet drop from changes in temperature though. Does this make me want to stop using it? No, because it gives me the best groups. It also gives outstanding velocity in many calibers. A great product (though I would sure like it more consistant from lot to lot). I am not trying to down the product. Like I said, I more than anyone would want data to show that Hodgdon is wrong, and maybe there is some out there graphing velocity versus temperature that shows RL22 is less temp sensitive than Hodgdon claims. If there is hard evidence, I will be the first to promote it.
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  #21  
Old 02-12-2005, 05:28 AM
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Re: Results on 300 win mag.

[ QUOTE ]
Yes, RL22 is temp sensitive. Look on Hodgdon's web site under extreme powders and it has graphs of temp vs. velocity. Hodgdon extremes vary approx 10 FPS over a 100 degree temp spread whereas RL22 and IMR powders varied as much as 100 fps.

[/ QUOTE ]
I don't want to pick a fight with anyone but last summer I was trying some loads using H-4350ext,R-19 and R-22 for a custom 300wsm then I saw the post about those powders being temp senstive and about different lots etc. For me I just didn't see it. I shot alot of loads over the chronograph more than I would normally do. Just wanted to see how good that Broughton 5c barrel was. I tried 3rds of R-22 in the 300mag friday and does show some promise. I use R-22 in a 6mmremAI as a LR pd/coyote rifle and a 25-06. I get the R-22 in 1lb cans not all the same lot #. I load at the range so my powder temp is the same as a loaded round. I shot the 300wsm last fall over the chronograph maybe I'm just lucky and I didn't see a spike in velocity. I have found that the slowest shot is normally the first one over the chronograph so I rely more on that shot than the others. I not only record the average but keep that first velocity and compare that to the next time I chrongraph that load. On H-4350ext the difference on first shot test 3 different days was over 60fps on R-22 is was over 30fps and on R-19 was over 10fps and the difference on the following shots was less than 5fps. So that the load I use in the 300wsm plus it groups pretty nice. I get my groups first then will do the chronographing later at the 50yd range which has a real nice concrete pads and benches are level to those pads. Well good luck.
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