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THA thing you did to your ammo to help your precision is ?

 
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  #22  
Old 03-02-2013, 08:50 PM
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Re: THA thing you did to your ammo to help your precision is ?

Look into ocw load development. Deburr your flash holes. I highly recommend a Forster Co-AX press. I have had luck with heavy for caliber bullets with slowish burning powders.

I also recommend watching ammo smiths videos on youtube.

some people weight sort brass/bullets. I don't and can get 1/3 MOA accuracy. I shoot either Hornady Amax or Berger VLD's. I also HBN coat my bullets and with kreiger barrel I clean every 100 or so rounds.


I use WFT trimmers in a drill press well worth the 75 bucks.

I use once fired LC brass in my .308. I run it in a Forster nat match FL sizer. Trim it with the wft. Give it a "light" neck turn. De burr my flash holes. This gets me 3/4 MOA out of my Stevens. Probably better but I have a SWFA 10X scope and prefer much higher power for shooting groups.

My 300 WM I use win brass. Neck size and run into my belted magnum body die from larry willis.

Find ever reloading book you can. Buy every reloading manual you can get your hands on.
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  #23  
Old 03-02-2013, 09:19 PM
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Re: THA thing you did to your ammo to help your precision is ?

Hand Loading for Long Range 1: Brass Prep
this helped me alot read all his reloading steps
A concentricity gage will help alot,straight rounds shoot straighter.
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  #24  
Old 03-02-2013, 09:33 PM
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Re: THA thing you did to your ammo to help your precision is ?

The loose neck and closing the bolt will work but you need the comparator to measure from the ogive to be consistent. Don't let it frustrate you as you are close to getting it put together. Same lot brass will get a lot of your problems put down and some consistent lenght will take care of some more.
If you are not under 1 moa after you get the brass uniform and the lenght consistent and the charge weight consistent with a few increments at and backing away from the lands I would start looking at your rifle or your shooting form.
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  #25  
Old 03-02-2013, 09:49 PM
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Re: THA thing you did to your ammo to help your precision is ?

More to the point about measuring the lands is it doesn't really matter if you know exactly where the lands are but it does matter if you can keep lenght to ogive consistent. If you find a load that shoots good then the only thing that matters is if you can duplicate it. How far it is off the lands is immaterial if the load shoots. The lands are just a reference point.
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  #26  
Old 03-03-2013, 12:08 AM
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Re: THA thing you did to your ammo to help your precision is ?

Also, if you change any item in your load CLEAN the barrel. Most important is the bullets. The composition of the jackets and or solid Barnes & GMXs will be different and you will not get the truth. Don't think brass change would require a cleaning but don't mix types and or shot counts!
Finally, don't change but ONE thing at a time.
Good luck.
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  #27  
Old 03-03-2013, 07:54 AM
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Re: THA thing you did to your ammo to help your precision is ?

Quote:
Originally Posted by T3-OleMan View Post
Also, if you change any item in your load CLEAN the barrel. Most important is the bullets. The composition of the jackets and or solid Barnes & GMXs will be different and you will not get the truth. Don't think brass change would require a cleaning but don't mix types and or shot counts!
Finally, don't change but ONE thing at a time.
Good luck.
This is a good thread chase, and a lot of good info here to pick from, and learn by. Sometimes the fix is accidental, so you have to be aware of subtle changes. There are a few things in " my " process that to me, have been contributors to my accuracy standards. One tool that I use on EVERY piece of brass I own is a primer pocket Uniformer. You simply can not believe how inconsistent the primer pockets are, in mass produced brass, and even the premium brass is close to perfect, but not perfect. I have found pockets to be off square, as viewed when the cutter starts cutting. It may skip at first, until it bottoms out. Also, the cutter SQUARES the bottom of the pocket, which in turn provides a proper seat for the anvil in the primer. Sinclair has a great tool for this! Inexpensive, but priceless rewards. The key words to this game are CONSISTENCY!!!!!
One last thing to check, is runout. Runout alone has spoiled many shooters dreams of guilt edge accuracy, with everything else being the best there is. A dial indicator, and a bearing cradle is all you need. Most runout problems are a product of the resizing stage. But first you have to see where you stand with that before you go on the hunt for the cure.
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  #28  
Old 03-03-2013, 03:34 PM
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Re: THA thing you did to your ammo to help your precision is ?

My big two thinga for accuracy are bullets and bullets. The bullet liking the barrel is 90% of the game.

A lot of the extra things we do can help to shave a bit off the group size but the bullet is king and always will be.

I fired a bullet known to be liked in one on my '06 rifles years ago with three different primers and three different brands of brass at the same time( same group) with the same powder charge and bullet loaded to the same depth and it shot sub moa.

I've mixed brass brands before and the ammo still shot moa. I've mixed round counts on brass and shot brass with cracked necks(with virtually zero neck tension) and the ammo still shot moa. At one time I didn't have trimmer pilots for a couple of calibers so I didn't trim the brass 'till it got to long for the chamber; it still shot moa as long as it fit. I've shot filthy brass before I had a tumbler; it still shot moa.

I probably ruffled some feathers here but a lot of what reloaders do is really make work. As long as your barrel likes the bullet and you are pushing it rather consistantly most rifles will shoot damn well if there is nothing mechanically wrong with the rifle. I don't make it a practice to be sloppy with my handloads but at times the $$$ haven't been there and if I wanted to shoot I had to play the game with what I had.

The biggest problems we have are often the ones we bring unto ourselves, such as not sizing the brass enough to fit the chamber without binding (neck sizing is good for this), using tough to stabilize bullets instead of easy to stabilize flat base bullets, and loading to long to give the bullet a good jump to the rifling and then wondering why you are having trouble with erratic accuracy and pressure( especially true with terribly overbore rounds).

Just a bit of food for thought.

P.S. -- I FL size all ammo, use flat base bullets to over 700 yards on critters, rarely do any primer pocket prep. unless the pocket is shallow, do NOT weigh my brass, do NOT use match primers, and do NOT even own a concentricity guage.
I DO use a bullet the rifle likes with a proper powder for good fill and velocity pushing it. I do weigh my powder charges. I do seat my primers uniformly and make sure they are all below flush the same depth. I do use the same brand of brass( at the same firing count when possible)- same brand on primers too. I do make sure my brass fits my chamber well with a couple of thou. of headspace only. I do use a good sand bag rest while shooting; mechanical rests are usually garbage as they have a lot of play in the adjustments.


Lefty
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