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apache12

Concentricity tool

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Did I spell that right?

 

For a non match shooter how important is this tool? Noticeable improvement? I should say I use a hornady press and dies. So maybe it would help me more as I assume hornady not as good as RCBS. Or Redding

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Unless you also plan on weighing each individual case and bullet before you load don't bother. It is something competition benchrest shooters use to squeeze every possible advantage out of a load. If I do my part as the shooter I have rifles consistently capable of 1/2 MOA. I have never owned one.

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Unless you are buying competition dies, weighing and sorting brass, and shooting bench rest competition already, don't worry about it. All it will do is add time, money and headaches. Competition dies will do more for you than that

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I do full case prep on all brass, even Lapua.

I weigh and sort brass and cull anything out of my specs.

I weigh and sort bullets, and sort bullets for variation in BTO.

I am what some would call obsessive with brass prep each loading with sizing, trimming, cleaning, and annealing.

I weigh each individual charge weight to a single kernel of powder.

I seat and check each individual round for CBTO.

 

I do not trim meplats.

I do not tip meplats.

I do not check runout on a concentricity guage.

 

I do get 5 shot groups like this or better on occasion. Usually in the .2-.3s however.

 

If you want to squeeze the absolute most out of your rounds, every little bit helps. Maybe .05", but add 2 or 3 more small steps, and it will show. For 99% of people, it is too little of a return on your time.

 

5 shots @ 100 .260 Rem w. 140 HVLD

20170122_120223_zpsdu0phpad.jpg

 

5 shots @ 200, same load

20170122_120544_zpsb7nvzmtk.jpg

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You forgot to crop out the "flyer" to the right of the calipers on the 200 target. :wacko:

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If that was a flier 3" away from my group, I would have burned the target! And probably thrown my rifle.

 

I did have some 3" groups at 200 yesterday. Tried out a new bullet, with a powder charge that everything else I have tried shoots well with. But not this new fad bullet. I don't even know if I am going to pursue load deve l Osment with it or not. Tried the same brand/type of bullet in 2 rifles. .308" 212 & .284" 175. Both shot terrible compared to almost everything else I have tried in those two rifles.

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You may have thrown the rifle but I suspect the scope would be removed first.

 

I couldn't get varget for my .308 a wile back. With everything else but the powder the same the group went from around 0.5 to near 2.0. Crazy.

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