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Reloading Techniques For Reloading


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load data for 7mm LRM

 
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  #8  
Old 01-14-2014, 09:02 PM
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Join Date: Jun 2011
Location: Florida
Posts: 314
Re: load data for 7mm LRM

Thank man I noticed the same thing you said about the seater die grabbing the outside of the case neck when I was loading the 180 sierra matchkings, but I did not notice it when I was loading the noslers. I have never had this problem before in 17years of reloading but I will give them a try and see what happens.

You are also seating the bullets a little deeper than I was told to by my gunsmith. Im seating mine at .010 off the lands and Im wandering if this is why he said hes having pressure signs because the bullets are too close to the lands. He says 70.5 with H1000 is as high as he can go without any pressure signs on the case but gunwerks load is 72.4 if Im not mistaken.

Hopefully Ill have it in my hands in a couple weeks and can do some tinkering of my own and see what happens.

KEEP ME POSTED ON YOUR PROGRESS
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  #9  
Old 01-14-2014, 09:19 PM
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Join Date: Dec 2013
Posts: 68
Re: load data for 7mm LRM

Aron at gunwerks said the max oal touching the lands was about 3.45 per the reamer design with Berger 180 but it varied quite a bit depending on the lot of bullets. Mine hit the lands at 3.437 I believe. So I followed the advise on their many videos which said start with .020 off the lands. I loaded some at .020 off .040 off and .060 off to try this weekend

And I got some retumbo and some nosler 175 lrab just to make my life more difficult. Will post this weekend on results hopefully.
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  #10  
Old 01-19-2014, 10:59 PM
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Join Date: Dec 2013
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Re: load data for 7mm LRM

I went out and shot groups at 200 yds this weekend and it was pretty much a disaster. Best group was .8 moa if you rule out a flyer I had a 4 shot group at .5 moa it seemed the good groups had Es of 40 fps + though. It seems that the third and fourth shots were flyers. But most other groups were around 2 moa. Velocites were slower than gunwerks advertises no way I could get to 3100 with 180 Berger 72 gr h-1000 sticky bolt and ejector mark and 73 retumbo same thing, of course seating depth has a large effect. Best speed was 3050 average. Still not complaining. Based on stringing I think I may have a bedding issue. I ordered a dial indicator to check. I bedded it my self so It's a really good possibility.
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  #11  
Old 01-19-2014, 11:06 PM
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Join Date: Dec 2013
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Re: load data for 7mm LRM

I went back and re bedded it and in the process found some places where the action was touching stock other than behind lug and tang I dremeled that out and shot a .5 moa group at 100 3 shots then 4 th made it 1 moa. I am now in process of bedding 2 piece bases and lapping rings to make sure I'm not putting any stress on action with scope. I figure if you are really into this game it takes about 3 years to get semi good at tuning rifles. Or in my case I'm still hoping to get semi good. Learning is expensive
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  #12  
Old 01-20-2014, 08:44 AM
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Re: load data for 7mm LRM

pic of setup
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load data for 7mm LRM-photo.jpg  
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  #13  
Old 01-21-2014, 11:47 AM
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Join Date: Jun 2011
Location: Florida
Posts: 314
Re: load data for 7mm LRM

Yeah I hear ya I don't have that much patience but I try little things here and there. I've got everything loaded and ready to go just waiting on my smith to tell me to come pick-up the rifle.
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  #14  
Old 01-21-2014, 11:32 PM
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Join Date: Mar 2007
Location: Dallas,OR
Posts: 341
Re: load data for 7mm LRM

Sorry to hear you're having issues. Gunwerks has modified their 7LRM reamer since they smithed my barrel and action. I need to turn my necks, just taking the high side off. That gives me .002" neck tension. Gunwerks also had their seating depth set for a .025" jump to the lands. My seating depth was best at .020 jump with the 180VLD. My set up shoots amazing.
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180VLD's@3145fps. with 72.8grs. of H1000, 215m primer
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