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load development frustrations

 
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  #1  
Old 08-20-2010, 12:59 PM
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Join Date: Dec 2009
Location: Boise, Idaho
Posts: 473
load development frustrations

I have been trying to come up with a load for months now, I had some very promising loads at 100 yards and when I moved out to 200 yards they went to heck. I have spent so much money and time. I have a sendero 300RUM.

I keep asking myself this question "Am I expecting too much from my gun, I feel I should be able to shoot a 5 shot group into a quarter size circle at 200 yards-Can my gun do this???"

I have tried berger bullets, 185gr, 190gr and 210gr
I have tried hornady 208gr A-Max
I have tried nosler 180gr accubond
I have tried nosler 200gr accubond
At first I thought my trigger was my biggest problem, went out and bought a jewell trigger.
I put a wyatt extended magazine box in my gun so I could shoot longer loads "berger loads"
My scope is a sightron 6-24x50, the mounts are the leupold dual dovetail mounts, would like to have nightforce rail and rings, but am unemployed.
It seems like I will go out and try a new load and get some kinda good results and then come back and try it again and its worse then before.
I have come to the conclusion its either the barrel or the scope or scope mounts, maybe the scope is moving slightly enough to throw me off????
I have put quite a few rounds down the barrel, could the barrel be shot out or could I have gotten a bad barrel from the beginning????
I had a gunsmith float the barrel. I am a month and half away from my deer season and am running out of time and am broke all the time anyways, but then who isn't????
Does anyone have any suggestions
my groups at 200 yards will fit in a 4 inch circle
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  #2  
Old 08-20-2010, 01:44 PM
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Join Date: Jul 2007
Posts: 937
Re: load development frustrations

Quote:
Originally Posted by freebird63 View Post
I have been trying to come up with a load for months now, I had some very promising loads at 100 yards and when I moved out to 200 yards they went to heck. I have spent so much money and time. I have a sendero 300RUM.

I keep asking myself this question "Am I expecting too much from my gun, I feel I should be able to shoot a 5 shot group into a quarter size circle at 200 yards-Can my gun do this???"

I have tried berger bullets, 185gr, 190gr and 210gr
I have tried hornady 208gr A-Max
I have tried nosler 180gr accubond
I have tried nosler 200gr accubond
At first I thought my trigger was my biggest problem, went out and bought a jewell trigger.
I put a wyatt extended magazine box in my gun so I could shoot longer loads "berger loads"
My scope is a sightron 6-24x50, the mounts are the leupold dual dovetail mounts, would like to have nightforce rail and rings, but am unemployed.
It seems like I will go out and try a new load and get some kinda good results and then come back and try it again and its worse then before.
I have come to the conclusion its either the barrel or the scope or scope mounts, maybe the scope is moving slightly enough to throw me off????
I have put quite a few rounds down the barrel, could the barrel be shot out or could I have gotten a bad barrel from the beginning????
I had a gunsmith float the barrel. I am a month and half away from my deer season and am running out of time and am broke all the time anyways, but then who isn't????
Does anyone have any suggestions
my groups at 200 yards will fit in a 4 inch circle

1. I shot out the factory rem bbl at 272 rounds, (remington said "to bad, it happens)
2. re-bbl'd with PAC NOR
3. after same frustrations you are having , I found the BERGER 168 VLD, haven't looked back yet, using h-1000 and fed. 215, loaded to max mag length
4. deadly on elk,deer,antelope,coyotes,etc.
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  #3  
Old 08-20-2010, 01:56 PM
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Join Date: Jun 2010
Location: Tennessee
Posts: 238
Re: load development frustrations

freebird63
Silver Member
freebird63
Silver Member
Freebird63. I know how you feel I got a sendero II in 300 RUM and it doesnt shoot up to par eather. It shot a little under a inch for the first 100 rounds and now best it will do is a little over a inch. (3 shot group at 100yds) I also have pressure signs with mid to light loads.
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  #4  
Old 08-20-2010, 02:20 PM
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Join Date: Jun 2009
Posts: 1,654
Re: load development frustrations

Freebird , In my opinion you have something going on . Do you have a buddy that has a good scope that you could borrow and put on your rifle? That would eliminate the question about your scope ? I feel that your rifle will shoot alot less than 4 inches @ 200 yards . Don't give up . I would have bet money (I don't gamble) but I would have bet the house that the 208 Amax would have shot in your rifle . My saying goes if it want shoot a matchking or Amax it want shoot.... I havent seen a gun yet that want shoot one of these two bullets!

BigBuck
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  #5  
Old 08-20-2010, 03:32 PM
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Join Date: Dec 2008
Location: Dillon MT
Posts: 188
Re: load development frustrations

One thing that you need to do is move your load development farther out to 300 or 400 yards. This will tell you a lot more about whats going on but isnt far enough for wind to throw off what your doing. Most bullets take a while to go to sleep. The larger the caliber/the faster the MV and the larger the bullet the longer it takes. I have found load development at 100 to be absolutely useless.

Seating depth can mean everything when it comes to doing load development. Check and recheck it. Try the bullets up close to the lands around .005-.010" off.

How much are you cleaning the barrel? You can clean them to much. A large amount of guns like to be run dirty rather then clean.

There is a lot of other things that can cause problems like these such as scopes mounts and stock problems. Sounds like you hit all these ones already...


bobby
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  #6  
Old 08-20-2010, 05:40 PM
Silver Member
 
Join Date: Dec 2009
Location: Boise, Idaho
Posts: 473
Re: load development frustrations

I have experimented with the bullet seating depth, I have tried all the magnum primers, retumbo, ramshot magnum, RL22, RL25, IMR 7828SSC, IMR 4350, US869, H1000, magpro-powders, have only used remington cases.
It either has to be the barrel or the scope, I checked the mounts and they were tight. I talked to a gunsmith today and he said to bring it in next week and he will take a look at it. I have always had good luck with sightron scopes, but I know you can always get a lemon.
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  #7  
Old 08-20-2010, 06:13 PM
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Join Date: Jan 2003
Location: North Louisiana
Posts: 586
Re: load development frustrations

My opinion and $5.00 will get you a cup of coffee in most places but as for the 300RUM....I think it's a POS!!
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