.40AET Posted August 2, 2004 Share Posted August 2, 2004 I have been using MG 180g FMJ in .40 for 3 years. I read all of the info on Zero vs. MG and decided to switch. I wanted to get to a jacketed base to get a little more velocity out of the bullet and the price is better on the Zero JHP vs. the FMJ in MG. I have been loading an AOL of 1.200" with the MG and everything has been great. When I loaded up 20 Zero's for the chrono, the bullets would not pass the drop check. The shoulder of the bullet where it transitions to the point is sharper and higher thatn the MG's. If I seat the bullet down to 1.17" then it passes the drop check. Is anyone else having problems loading Zero's to 1.200" oal??? Thanks Link to comment Share on other sites More sharing options...
dpeters8445 Posted August 2, 2004 Share Posted August 2, 2004 I load my Zero 180 JHP's to 1.170. The reason why I settled on this OAL was because I could not eject a live round out of the gun until I got down to 1.180. I figured that I would drop the OAL another 10 to leave a little more room for live round ejection. My buddy's Bar-Sto barrel is the same way. 40 AET, What is the drop test? Doug Link to comment Share on other sites More sharing options...
Brazos Custom Posted August 2, 2004 Share Posted August 2, 2004 You need to freebore your barrel a little farther. Link to comment Share on other sites More sharing options...
uscbigdawg Posted August 2, 2004 Share Posted August 2, 2004 40 AET, What is the drop test? You need to freebore your barrel a little farther. Ditto. Rich Link to comment Share on other sites More sharing options...
.40AET Posted August 2, 2004 Author Share Posted August 2, 2004 Sorry- the drop check is a Dillon case gauge. I took the barrel out to double check the gauge. The 1.200 Zero's go into the barrel with no problem. If the rounds can't pass the case gauge, then I have no easy way of checking match ammo. Thanks for the input. Link to comment Share on other sites More sharing options...
Rob Bagnato Posted August 2, 2004 Share Posted August 2, 2004 I have the same problem. I ended up buying a diffrent case gauge from Brownells. I also load to 1.20 that solved the problem. The dillon gauge is now a paper weight. Link to comment Share on other sites More sharing options...
Shooter Grrl Posted August 2, 2004 Share Posted August 2, 2004 If it fits in the barrel, you're good to go. David threw away his .40 gauge, he only uses his barrel now! Link to comment Share on other sites More sharing options...
Rob Bagnato Posted August 2, 2004 Share Posted August 2, 2004 If you don't want to take apart the gun every time you load here is the info: C.P. Bullets Match Ammo gauge sku# 169-300-010 fits 10mm $10.25 (Directley from the Brownells web site). I am sure there are others out there but this works for me. Link to comment Share on other sites More sharing options...
Larry White Posted August 2, 2004 Share Posted August 2, 2004 Chamber reamers work on case guages too, throat your guage to match your chamber. Larry Link to comment Share on other sites More sharing options...
bulm540 Posted August 2, 2004 Share Posted August 2, 2004 No problems with my 200 gr zeros. I use a dillon cas gauge. I load to 1.200OAL. Link to comment Share on other sites More sharing options...
.40AET Posted August 3, 2004 Author Share Posted August 3, 2004 No problems with my 200 gr zeros. I use a dillon cas gauge. I load to 1.200OAL. Well, then WTF is wrong with mine????? Maybe I'll try another case gauge and see what that brings. I like the price, if everything else works, then I would like to switch for good. The 200's sound even better. Thanks guys. Link to comment Share on other sites More sharing options...
Guest Larry Cazes Posted August 3, 2004 Share Posted August 3, 2004 I just use the barrel from my gun! There will always be some slight variation between a gauge and the barrel.....Why pay for a seperate gauge and take a chance. KISS Link to comment Share on other sites More sharing options...
davidwiz Posted August 3, 2004 Share Posted August 3, 2004 I did the same as lkytx, had my gunsmith use the same reamer that he used on my bbl to ream my case gauge for my Super, .40 and .45 No need to take the bbl out. Link to comment Share on other sites More sharing options...
uscbigdawg Posted August 3, 2004 Share Posted August 3, 2004 Why pay for a seperate gauge and take a chance. If your gauge is at spec and your chamber is a tick bigger, and it's a go in the gauge, it'll definitely go in the gun. Having your gunsmith ream a gauge is probably the best solution. After all. You start taking a gun apart to drop check your ammo, the next thing you know, you're cleaning it and we can't have that! Rich Link to comment Share on other sites More sharing options...
Guest Larry Cazes Posted August 3, 2004 Share Posted August 3, 2004 Having your gunsmith ream a gauge is probably the best solution Yeah....For the gunsmith it is! Link to comment Share on other sites More sharing options...
uscbigdawg Posted August 3, 2004 Share Posted August 3, 2004 Yeah....For the gunsmith it is! Heaven forbid, we spend an extra $10 on a $3,000 gun. Rich Link to comment Share on other sites More sharing options...
davidwiz Posted August 3, 2004 Share Posted August 3, 2004 My gunsmith didn't charge me to ream my chamber gauges. As the Right Honorable Rich says, an extra $10 isn't going to kill you. Link to comment Share on other sites More sharing options...
.40AET Posted August 4, 2004 Author Share Posted August 4, 2004 If your gauge is at spec and your chamber is a tick bigger, and it's a go in the gauge, it'll definitely go in the gun. I don't want to lose that extra margin of safety. I would rather spend $20 and buy 2 case gauges to find one that works. Anyway, I went to the range today and loaded up a magazine full of the Zero's. Every other round failed to feed. Looks like I may look into the MG 180 CMJ's. Thanks again for all of the feedback. This site rocks! Link to comment Share on other sites More sharing options...
Shooter Grrl Posted August 4, 2004 Share Posted August 4, 2004 OH OH OH - JHP's! Use the TC's!!!! JHP's jackets fail in the .40 way too easily! The TC's will give you much better quality, and feeding! Link to comment Share on other sites More sharing options...
Larry White Posted August 4, 2004 Share Posted August 4, 2004 40AET, I take it that this started when you changed bullets. Have you rechecked your crimp? Measure it, then try to case guage a few rds backwards, this can tell you a lot about which end of the rd has a problem. JHPs should not be a problem, my 40s run them all, JHP, FMJ, TCs, LSWC & FPs. I use Zeros and MGs both and have no problems. Revisit your loading set up, something has changed. If all else fails drop your OAL back to 1.180 os so and try that. Just as insurance check your extractor and breachface and mag springs. Link to comment Share on other sites More sharing options...
.40AET Posted August 4, 2004 Author Share Posted August 4, 2004 OH OH OH - JHP's! Use the TC's!!!! JHP's jackets fail in the .40 way too easily! The TC's will give you much better quality, and feeding! DOOHH! Link to comment Share on other sites More sharing options...
Jim Norman Posted August 4, 2004 Share Posted August 4, 2004 I started shooting Star FMJ 180, switched to Star CEB to get a soild base, last time we bought it was Zero 180 JHP. I have had no problems cycling any ofe these all oaded to 1.175 thru my EGW built Para. I use a full length sizing die, and a factroy taper crimp as opposed to the Dillon dies. What I have found is that the last 10,000 Zeros have a 1 grain variance in bullet weight within the same box! Forget lot to lot, we are talking the same box! Star had no such deviation. Length also varies, but not as widely. I did need to reset my seating die for the Zero, it is a slightly different shape. As to chamber checking, I tempt the reloading gods here, but using the full length sizing die and the Factory taper crimp, I have not failed a chamber check in so long that I have stopped. I do check each round for cracks, bulges, dents and high primers as i mark them (Thank you Nolan for the Brass Master) YMMV Link to comment Share on other sites More sharing options...
Flexmoney Posted August 4, 2004 Share Posted August 4, 2004 SG, What's this sillyness about JHP's??? They run fine. If they don't, I would look to other causes. Link to comment Share on other sites More sharing options...
benny hill Posted August 4, 2004 Share Posted August 4, 2004 If your gun won't run everything, you have a problem that needs to be solved. Link to comment Share on other sites More sharing options...
Sterling White Posted August 4, 2004 Share Posted August 4, 2004 Zero JHP's at 1.170 run in my Schueman Match and STI barrels (80k+/- rounds)...no problems. Link to comment Share on other sites More sharing options...
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