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April 9, 2017, 12:39 AM | #1 |
Junior Member
Join Date: November 8, 2009
Posts: 12
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Glock 20 and hard cast bullets
I reloaded 200 gr Cast Performance in new Starline brass. Trimmed, sized, correct overall length is correct. The problem is that the bullets won't even chamber. I have a Barstow barrel on the gun. The bullets will drop into the barrel but if I chamber a round the slide and bullet jam up. I have a 21 lb recoil spring in the gun. Any help would be appreciated
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April 9, 2017, 05:46 AM | #2 |
Member
Join Date: April 30, 2008
Posts: 40
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Sounds like the cartridge may be too long.
Take a factory cartridge that will cycle in the gun and put it in the barrel. Look carefully at how far it sits in the barrel. Also, with the cartridge (the good one) in the barrel see if the cartridge can twist freely by using your fingers to grip the cartridge rim and twisting. Now do the same with the cartridge that isn't feeding. |
April 9, 2017, 08:00 AM | #3 |
Senior Member
Join Date: November 26, 2016
Posts: 1,564
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Do the plunk test with the barrel removed and mark the cartridge with a magic marker as explained in this article to determine exactly why and where it does not fit: http://www.shootingtimes.com/reloadi...he-plunk-test/
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April 9, 2017, 10:25 AM | #4 |
Senior Member
Join Date: February 28, 2017
Posts: 272
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Sounds like a straightforward feed issue. Is this a WFN (Wide Flat Nose) bullet?
Bullets which have a non-typical profile can be problematic. Most .40 and 10mm ammo is truncated cone or roundnose flat point, with or without hollowpoint. |
April 10, 2017, 08:35 PM | #5 |
Junior Member
Join Date: November 8, 2009
Posts: 12
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Thanks all. OAL is 1.25 in. There's no taper on the bullets until almost to the nose of the bullet. The bullet can't be seated much lower without problems. Im going to pull some and load them into empty shells to see how far the bullet has to be seated to chamber
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April 11, 2017, 07:15 PM | #6 |
Senior Member
Join Date: April 10, 2008
Location: Alaska
Posts: 7,014
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If they drop into the barrel that is removed from the gun to correct depth (cross check what that is with some factory rounds) and they aren't going forward then its a feed issue.
Keep in mind, you have to watch for lead build up in the Glocks polygonal barrel (H&K as well) |
April 12, 2017, 12:06 AM | #7 | |||
Staff
Join Date: March 11, 2006
Location: Upper US
Posts: 28,817
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Quote:
Too many people overlook the fact that while the max length to fit in the chamber is an important number, the max length that will feed from the magazine CAN BE DIFFERENT, usually shorter than the max length that will chamber. And your rounds need to be short enough to fill the magazine and feed without issue. The amount of difference in length needed will vary between different guns and calibers. One fellow wrote in the other day, he had gotten a COAL from a website (or a manual, I forget, but in this case it doesn't matter), his rounds passed the plunk test, but when loaded in the gun he found only 3 rounds could be loaded in the magazine, before they began binding against the mag body. His COAL was over the SAAMI listed max, as it turned out, he rechecked and found he had missed the * in the data that led him to a footnote stating the length was over SAAMI spec... HOWEVER, the same result CAN happen when rounds are at the SAAMI spec. Remember that the spec for max COAL is just an agreed upon industry standard, one that should work in everything. Should work, is not the same as will work. There are guns and ammo that varies from the SAAMI spec. Quote:
Loading the bullet a little deeper MAY give you enough "room" and solve your feeding problem. Quote:
(and if your answer is raising the pressure too much, the answer is reduce the load appropriately. There's no free lunch.)
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All else being equal (and it almost never is) bigger bullets tend to work better. |
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