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  #1  
Old 02-24-2011, 09:09 AM
Uncletim1947 Uncletim1947 is offline
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Default Model 625JM lead bullet issue

I am new to the forum. About 50% of the lead bullets I reload for my 625 will not chamber. I end up shooting them in my Kimber. This is not a problem with jacketed bullets but I hate the expense. I have tried different brands to no avail. I have miked the bullets and some are larger than others. Any ideas?
Thanks,
Tim
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Old 02-24-2011, 09:39 AM
Jellybean Jellybean is offline
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Welcome to the forum.

If you are putting a roll crimp on the revolver loads and crimping and seating at the same time, that may be a problem. If that is the case try seating and crimping in two different steps.
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Old 02-24-2011, 09:58 AM
Uncletim1947 Uncletim1947 is offline
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Actually I am using a Dillon loader. It seats with one die and crimps with the next. OAL is correct and I have tried about 3 different brands. I suspect the cylinder chambers are tighter than a semi auto.
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Old 02-24-2011, 10:04 AM
Jellybean Jellybean is offline
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What size are your bullets miking too?

I just reread the part about shooting them in your Kimber. You might have both firearms checked to make sure their chambers are within tolerences.

I don't have any experience with Dillion equipment but it seems that if it works in one firearm it should work in the other.

Last edited by Jellybean; 02-24-2011 at 10:14 AM.
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Old 02-24-2011, 10:22 AM
pbcaster pbcaster is offline
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Default 625 CHAMBERING ISSUE

If your 625 will chamber jacketed bullets it should also work with proper cast bullets.

I "suspect" your O.A.L. is too long and the bullets are sticking in the chamber throats preventing them from entering the cylinder all the way.

If your taper crimp measures .473" or less(I use .471")that should not be an issue.

I use .452 diameter cast lead bullets with the listed O.A.L. below. You will need to reduce your powder charge for rounds using a shorter O.A.L. than I "suspect" you are using now to get the same pressure and velocity.

230 grain RN 1.250"
225 grain TCFP 1.210"
200 grain SWC H&G #68 1.250"
200 grain RNFP 1.210"
185 grain SWC H&G #68 1.250"
185 grain SWC H&G #130 1.165"

The above listed O.A.L. information also works in my Kimbers and other .45 ACP pistols that live here.

If you have lead fouling in the cylinder just before the entrance to the chamber throats that will prevent proper chambering of loaded rounds.

If you have cases that have a "Glock Bulge" near the base of the case(that is rare with Glock pistols in .45 ACP but it does happen)that will need to be removed with a "roll sizer" or other methods designed to accomplish the same thing. "Glock Bulge" should not be your problem since your reloads work fine in your Kimber.

If you are using "Moon Clips" and some of them are bent out of shape that will also cause chambering problems.
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Old 02-24-2011, 12:06 PM
Jellybean Jellybean is offline
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O.K. I'm back now, the grand daughter discovered fire today, along with the meaning of the word "no".

If you are shooting the loads out of both a revolver and an auto make sure you aren't putting a roll crimp on them, which the Dillion dies might not be able to do anyway but I'm not sure.

Are the loads chambering almost all of the way in the revolver or won't even start?

If it is an OAL issue as pbcaster mentioned, you might not want to shoot anymore of the lead bullets in your Kimber either. If they happen to be too long for it too it may not be completely in battery when it's firing.

Last edited by Jellybean; 02-24-2011 at 10:04 PM.
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  #7  
Old 02-24-2011, 12:21 PM
Skip Sackett Skip Sackett is offline
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Quote:
Originally Posted by pbcaster View Post
If your 625 will chamber jacketed bullets it should also work with proper cast bullets.

I "suspect" your O.A.L. is too long and the bullets are sticking in the chamber throats preventing them from entering the cylinder all the way.

I have the exact same firearm and have had the exact same problems. I want big bullets so they fit the firearm correctly and a long OAL so pressure is lower. When I do that with some very round bullets @ .452" or above, I have the problem you mention.

What I did is changed bullet profiles. I went to one with a reduced ogive. Like this:



Since I cast my own. I can pick and choose much more as to what I get for my own guns. You may try a TC design and seat to the end of the TC.

This is a BIG problem with the M625JM. The throats are .452" maximum and don't like that same size bullets!

Hope this helps.
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Old 02-24-2011, 12:23 PM
Uncletim1947 Uncletim1947 is offline
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Thanks for the reply. I think you hit it. OAL is 1.244" on SWC. The problem appears to be the taper crimp. Jacket bullets come in at .469(works) the SWC that work are .472 or less. The ones that won't chamber are >.472. The issue is much more prevalent in hot weather(Tx) than it is now. I will call Dillon and see if I can adjust the taper crimp of if I need a different die. If you have any other suggestions let me know.
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Old 02-24-2011, 09:16 PM
cyberiad cyberiad is offline
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I load on a Dillon 550 using all Dillon dies and recently started loading Laser Cast 230 grain bullets (.452). Almost none of them would 'gauge' in a Dillon case gauge and they also would not fit in the cylinder of my 625. I kept adjusting the crimp until I got down to .468 and they all work fine now. My OAL is 1.225.

Last edited by cyberiad; 02-24-2011 at 09:18 PM.
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Old 02-24-2011, 09:41 PM
Harrison Harrison is offline
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I reload 45acp for both a 1911 with a match barrel and for a 625. I use a Dillion with Dillion 45acp dies. Your Dillion crimp die is adjustable from no crimp at all, down to too damn much crimp. You just need to play with the crimp die till you get a crimp the 625 is happy with. BTW, your crimp die is a taper crimp. As I understand it unlike most revolvers, the 625 in 45acp does headspace on the case mouth, so a taper crimp is proper. It does not HS on the rim, like a 38, 357, 44 or 45LC.
Hope this helps.
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Old 02-25-2011, 10:18 AM
Uncletim1947 Uncletim1947 is offline
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Thanks guys.
I adjusted the taper die and cartridges that would not chamber in the cylinder are now fine.
Any ideas on your favorite plinking load for the 625. I have a BIG container of Clays. Now that I know how to adjust a taper die I can continue to shoot lead.
I have shot approx. 800 rounds thru the 625. Will it ever be as accurate as my Kimber Target II. I much prefer to shoot the 625. It beats me up less.
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Old 02-25-2011, 11:09 AM
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Quote:
Originally Posted by smith crazy View Post
.........This is a BIG problem with the M625JM. The throats are .452" maximum and don't like that same size bullets! .........
Don't want to shanghai thread, but others might find info useful also.

I used to load LRN from a variety of commercial sources for bottom feeders, ran them through a .452" sizer die for consistent diameter and roundness and finished off reloading with a Lee Factory Crimp die that also resized the loaded brass.

I just picked up a new 625JM and haven't had a chance to shoot it or slug the barrel and chambers yet, so I don't know the diameters, but my plan is to use the same sizing and crimping dies for the RN, SWC and WC I'll be shooting in the 625JM.

Skip, so what diameter boolits do you shoot in your JM if it doesn't like boolits the same size as the throats?
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Old 02-25-2011, 11:59 AM
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I had the same problem with my 625. I started seating the bullets a little deeper. No more trouble.
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Old 02-25-2011, 02:11 PM
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if your using a moon clip go to round nose instead of swc
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Old 02-25-2011, 03:53 PM
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Quote:
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if your using a moon clip go to round nose instead of swc
What's the rational for using RN rather than SWC?
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  #16  
Old 02-25-2011, 03:59 PM
Skip Sackett Skip Sackett is offline
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Quote:
Originally Posted by JohnnieB View Post
Don't want to shanghai thread, but others might find info useful also.

I used to load LRN from a variety of commercial sources for bottom feeders, ran them through a .452" sizer die for consistent diameter and roundness and finished off reloading with a Lee Factory Crimp die that also resized the loaded brass.

I just picked up a new 625JM and haven't had a chance to shoot it or slug the barrel and chambers yet, so I don't know the diameters, but my plan is to use the same sizing and crimping dies for the RN, SWC and WC I'll be shooting in the 625JM.

Skip, so what diameter boolits do you shoot in your JM if it doesn't like boolits the same size as the throats?

You are resizing your .452" bullets to a point with the Lee FCD. I don't use one on my 45ACP loads.

There are only two things really you can do. I chose another bullet profile. One that has a reduced diameter at the place the last driving band and the ogive join. Take a close look at the RN I have in the picture. You should be able to see that there is a step there.

Seating deeper is an option but not one I wanted to do. Deep seating can lead to other problems that I didn't want to tackle.

A truncated cone bullet is another option and would have been my next choice for bullet shape.

FWIW and I hope that explanation works!
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1911, 45acp, 625jm, commercial, crimp, fouling, glock, kimber, model 625

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