The_Vigilante Posted December 12, 2010 Share Posted December 12, 2010 (edited) Have a dumb question I need to get answered. When measuring the crimp should I use the end of the caliper where it comes to a point (at least mine do) or more to the middle of the caliper? I am getting different measurements between the two locations. Should I get the same meaurements from both locations? Please school me on measuring with a caliper. Thanks Edited December 12, 2010 by The_Vigilante Link to comment Share on other sites More sharing options...
Corey Posted December 12, 2010 Share Posted December 12, 2010 i try to use the end of the blade near the points as its thinner up there. I can keep consistency in the measurements by doing that. plus with the thinner blade, its easier to get the measurement closer to the case mouth. YMMV Link to comment Share on other sites More sharing options...
rhyrlik Posted December 12, 2010 Share Posted December 12, 2010 I do not measure crimp. I eyeball it. To measure crimp, you first have to have all the cases trimmed to the exact came length. Otherwise the crimp die will apply more crimp to longer cases and less crimp to shorter cases. Measuring the crimp on untrimmed brass would cause nothing but frustration. Link to comment Share on other sites More sharing options...
The_Vigilante Posted December 12, 2010 Author Share Posted December 12, 2010 I don't think hardly anyone here on the BE Forum trims 9mm brass. Link to comment Share on other sites More sharing options...
Corey Posted December 12, 2010 Share Posted December 12, 2010 on 2nd thoguht, the easiest way I like to measure crimp is a case gage. if it drops in and drops out, ive crimped it enough Link to comment Share on other sites More sharing options...
GrumpyOne Posted December 12, 2010 Share Posted December 12, 2010 I don't think hardly anyone here on the BE Forum trims 9mm brass. Methinks you are correct in that assumption. I use the ends, much like Corey. I'm also quite sure that most people here on the forum don't trim ANY pistol brass. Link to comment Share on other sites More sharing options...
The_Vigilante Posted December 12, 2010 Author Share Posted December 12, 2010 Corey, Aren't some barrel chambers more sensitive to crimp than case gauges? Link to comment Share on other sites More sharing options...
GrumpyOne Posted December 13, 2010 Share Posted December 13, 2010 Corey, Aren't some barrel chambers more sensitive to crimp than case gauges? Too much crimp and they have a tendency to go in past the shoulder and lock up the gun...Ask me how I know this... In all reality, it's not a crimp anyway, it's just removing the bell/flair you put in the case in the powder drop. Unless you are loading for a revolver... Link to comment Share on other sites More sharing options...
Bear23 Posted December 21, 2010 Share Posted December 21, 2010 Frank, I use about .004 crimp on my pistol calibers. Use the very end of the case and use the fine ends of the calipers. your case should not look like a 30-30 winchester. too much crimp and taper then.. Link to comment Share on other sites More sharing options...
Foxbat Posted December 22, 2010 Share Posted December 22, 2010 Crimp is very much gun-dependent. I have two nearly identical 38SC guns - one eats any ammo you give it, no problem with zero crimp. The other one will choke on each tenth round if you don't crimp somewhat aggressively. At that point it becomes 100% reliable. Bottom line - general recommendations, without direct experience with a particular gun, are not too useful. It makes sense to start with close to zero crimp, and see if that works - doing so will extend the brass life. Then add crimp if the gun doesn't feed reliably. Link to comment Share on other sites More sharing options...
Foxbat Posted December 22, 2010 Share Posted December 22, 2010 Too much crimp and they have a tendency to go in past the shoulder and lock up the gun...Ask me how I know this... That really should not happen, as the extractor should keep the round from moving forward. In fact many people shoot .40S&W ammo in their 10mm guns thank to that effect. Link to comment Share on other sites More sharing options...
blkbrd Posted January 12, 2011 Share Posted January 12, 2011 Its not a crimp die. Its a flare removal die. Link to comment Share on other sites More sharing options...
High Lord Gomer Posted January 12, 2011 Share Posted January 12, 2011 I thought the minimum was 37 pieces... Link to comment Share on other sites More sharing options...
CZinSC Posted January 12, 2011 Share Posted January 12, 2011 I thought the minimum was 37 pieces... If you think the bare minimum is enough, then ok. But some people choose to wear more and we encourage that. Link to comment Share on other sites More sharing options...
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