LOCK-N-LOAD CONCENTRICITY GAUGE Reviews & Ratings

Item was shipped quickly and received in perfect condition. Brownell

The first time I used this tool was to check factory ammo for a 25-06 that would not group much less than 2moa with the stuff. After fixing the runout it then printed .75 moa or less with the corrected loads. I’ve used it ever since with all my rifle hand loads. I am pleased to say the customer support team at Hornady are stellar performers. They had a replacement part mailed out to me in less than a day. They answered my email before I finished the cup of coffee I was drinking when I sent them the message (I have p… poor telephone service where I live). The Nylon Tip Thumb Screw threw it’s tip, but then it did have at least 10k rounds over it (no BS here either, I shoot competition in two classes of benchrest and have so far shot out seven barrels using this tool for durn near all of it).

Use to check home made ammunition as well as store bought. Make sure sure to give a coating of light lube to stainless parts depending on where you live and how the equipment is stored.

This tool gives me the ability to tune my handloads and even factory ammo for minimum runout. This in theory should tighten my groups up by removing one more inconsistency from the loaded rounds. I haven't done a side by side comparison with tuned versus untuned ammo, but my first outing with ammo I had tuned was very successful. The tool itself is very well made and heavy duty, and I look forward to using it for years to come.

Bought this because I found it for a good deal thinking it could only be a benefit to my reloading process. It took about 50 rounds to get a good rhythm down for removing a case and then inserting new case and about another 100 rounds after that to get +80% of my cases concentric the first try. Overall this appears to have tighten my groups up about 0.1 to 0.2 MOA. I can now align about 150 cases while watching TV, more when I'm actually focused on the task. One note, why setting up I found it beneficial to have the systems spring preloaded only about about an eighth of an inch or less. You only need enough pressure to hold it in there, anything more than that makes using this a pain in the fingers and ears.

Great, well made gage fixture, The base casting is heavy enough you don't have to bolt it down (though there are cast in ears in the base for that purpose). The fixture has become SOP for checking bullet runout after loading and it's easy to adjust bullet runout with the pusher screw on the sliding gage head. One gripe is that the double 'o' rings on the indicator stem aren't sufficient enough to stabilize the stem...I added a third and that cured that deficiency. I ran some factory rounds through it and was amazed at the bullet runout. It's imperative that the bullet enters the lands parallel to insure downrange flight is true. Every little bit hepls and this tool goes a long way to insuring downrange accuracy at extended distances.

You need this amazing machine to load accurate ammunition. After trying every loading accuracy technique this showed me that bullet alignment is hit or miss at best. Wilson hand dies will do a great job for you after meticulous case prep. Forester benchrest dies and Redding are very good. This Hornaday concentricity machine will find bullet to case runout and allow you straighten your ammo. Some of the readings amazed me. As much as .006 out of alignment. A turn of the thumb screw, recheck by rotating the round again, and most misalignment will be removed. Again, an amazing machine that is much appreciated addition to my loading bench.

I have been reloading for some years and believed that I had every thing down pat. This product told a different story some of my loads were any where from .005 to 010 out. With min effort I corrected both factory and reloads to within .001. Simple to use and well made. Wanted to mount it on the rear wall of my work bench but the rubber O rings wound not hold the ball gauge. Little problem. Every reloader needs one of these.

This product is my new favorite tool to use when Im reloading, checking rounds is so easy and correcting runout is a breeze, sometimes you have to go further than you think with the correcting screw, though now that I think about it you still have to have concentric wall thickness in your brass necks to get good runout on your bullet, next shells I load I will check the necks for concentricity(neck wall thickness) before I seat the bullet with my ball mic. Otherwise, this is the best 100 or so bucks Ive spent in awhile..

Just received mine today from Sinclair. Very impressed with the high quality materials and construction! Used a factory round, 300 Win mag and found it to be .008 out. Gave the adjuster knob (screw) a firm twist and it went down to .003. Gave it one more twist and got under .001! Hornady states that .002 - .003 run out will give optimum accuracy. I got less than .001! Anyone can use this tool! The rim fits into a large diameter precision ground shaft. The shaft is funnel shaped at the case end so the rim centers. The bullet end is spring loaded. Hornady gives you 3 bullet shafts that should fit any bullet nose. Simply pull the knob out, put in your round and turn the case with your finger. Find the low spot. Turn the adjuster screw which is opposite the indicator to push it back. Very happy with this tool! Worth every penny! [...]