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Posted: 12/24/2011 11:01:05 PM EDT
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How many of you guys and gals here, check your rounds for run-out when loading for accuracy?
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I have been using a Bersin tool for runout since about 2003. With a little practice it works great, but was a little tough to get the hang of it at first. You have to be very careful not to over adjust or you start messing with neck tension which is important also.
Have shot .5MOA groups @ 1000 yards using this tool, including a World Record group. Ed |
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I just started playing with the Hornady concentricity gage and have only tried the rounds shooting steel, I need to shoot some paper and see if it helped with correcting run out. I hear about it messing with neck tension which is supposed to be important as well........what if you apply a crimp with a lee die after you bend the bullets run out to zero or .001? Would that fix the neck tension? only tests will tell!
I just realized you are talking about .50 cal......oops! I correct the run out on a v-block and a dial indicator tapping the high spots down with a hard plastic hammer like tool, it takes a minute or so but it works......I anneal the cases and that helps too! |
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Quoted:
I have been using a Bersin tool for runout since about 2003. With a little practice it works great, but was a little tough to get the hang of it at first. You have to be very careful not to over adjust or you start messing with neck tension which is important also. Have shot .5MOA groups @ 1000 yards using this tool, including a World Record group. Ed Ed, ".5 MOA groups @ 1000 yards" is very impressive! I tip my hat to you Sir!  I have always believed that bullet run out plays a large role in accuracy. Have found that to be true with the smaller calibers but haven`t tried using a tool of sorts to adjust run out for the larger bullets.
What rifle were you using to get the group sizes that you did out at 1000? What was your barrel length? |
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Quoted:
Quoted:
I have been using a Bersin tool for runout since about 2003. With a little practice it works great, but was a little tough to get the hang of it at first. You have to be very careful not to over adjust or you start messing with neck tension which is important also. Have shot .5MOA groups @ 1000 yards using this tool, including a World Record group. Ed Ed, ".5 MOA groups @ 1000 yards" is very impressive! I tip my hat to you Sir! I have always believed that bullet run out plays a large role in accuracy. Have found that to be true with the smaller calibers but haven`t tried using a tool of sorts to adjust run out for the larger bullets.
What rifle were you using to get the group sizes that you did out at 1000? What was your barrel length? I shoot a State Arms Light Wieght Competitor model with a 30" barrel and an alluminum tactical stock. Shooting prone off a bipod and monopod. Was able to do it at several different 1000 yard ranges in matches. Ed |
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Quoted:
Quoted:
Quoted:
I have been using a Bersin tool for runout since about 2003. With a little practice it works great, but was a little tough to get the hang of it at first. You have to be very careful not to over adjust or you start messing with neck tension which is important also. Have shot .5MOA groups @ 1000 yards using this tool, including a World Record group. Ed Ed, ".5 MOA groups @ 1000 yards" is very impressive! I tip my hat to you Sir! I have always believed that bullet run out plays a large role in accuracy. Have found that to be true with the smaller calibers but haven`t tried using a tool of sorts to adjust run out for the larger bullets.
What rifle were you using to get the group sizes that you did out at 1000? What was your barrel length? I shoot a State Arms Light Wieght Competitor model with a 30" barrel and an alluminum tactical stock. Shooting prone off a bipod and monopod. Was able to do it at several different 1000 yard ranges in matches. Ed Very nice! Thanks Ed for the info! Really appreciated it! A very Merry Christmas wish to you and yours! :) |
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Ed, every time you post something about your long range shooting it turns me green with envy. In recent times there is a group of people that brag about shooting deer at long ranges of 1000 yards and more and usually it pisses me off. I don't figure there are a 100 people in this country with the tallent to do that with a cold bore. You are one of the few that I would tend to believe it if you said it. I also figure you probably would not attempt a shot at a live buck or bull elk at that range because of the chance of wounding them. I would sure like to spend some time with you learning how to better shoot my 50. Age is catching up with me and I have not spent the time I need shooting at long range with it. Anyway keep up the posting and perhaps one of these days it will make me get off my butt and do what I need to. Merry Christmas and a Happy New Year
Ron |
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Ron, I never shot a deer past 600 yards, I have shot several between 500 and 560 yards, but I won't take those 1000 yard shots at an animal. Around here during Deer season the winds are usually pretty bad and partly cloudy is bad mojo with long range shooting also. Depending on where the sun is , in relation to your target, I have seen many people at a 1000 yard match put 3-4 rounds in a nice tight group and then a cloud drifts in front of the sun and they take their next shot and find their round impacted as much as 15 inches away from thier previous shots. The shadow on the target makes it look different, the worst I have seen it is when shooting to the south slightly to the east late morning/early afternoon. It wasn't as bad early morning.
The difference in impact between a cold bore and a warm bore varies with each rifle. I had a barrel that would shoot sub MOA @1000 yards with a warm bore, but when it was cooled down the 1st shot would be about 20 inches higher than the 5th shot @ 1000 yards, consistantly. I shot that barrel in matches for a couple of years totaling just over 900 rounds. I would have to get off 5 sighter shots before record string and while waiting for the fire comand I would have a towel wrapped around the barrel to keep it warm. I have another rifle that only shoots about 4 inches high with a cold bore and stays pretty consistent after the second round as long as I dont leave a round in the hot chamber for more than 45 seconds before firing. I just hate seeing an animal suffer, I would like to say I killed a Deer past 1000 yards, but there is a good chance all I would end up with is a suffering and long tracking story instead. So I don't want to take that chance. I know some one that has a video of him shooting a Deer at 1 mile with a tracer round, Great Shot , but he is the first to admit he had to take a lot of shots to do it and had a bench set up in warm weather Down South. Ed |
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