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Heavy overloads in 32-40. What happened?? (Read 27836 times)

JLouis Frequent Elocutionist Offline Posts: 10625 Joined: Apr 8^th, 2009	Re: Heavy overloads in 32-40. What happened?? Reply #30 - May 16^th, 2015 at 6:40pm	Print Post
	Could also have been an under charge of which the effects can be the same with the under charge creating a detonation in lieu of a gradual powder burn.

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Adrian Full Member Offline Posts: 122 Joined: Mar 2^nd, 2015	Re: Heavy overloads in 32-40. What happened?? Reply #31 - May 16^th, 2015 at 9:21pm	Print Post
	here is the case head of a 30-30 re-formed to 32-40 and double charged with 17 grains of Unique. The primer is really flattened, the rim has flattened and expanded. The stamping on the case head is flattened and deformed. I had to wait a few hours hours and to tap the case out by inserting a cleaning rod through the bore. Every tool mark left by the chambering reamer,of which there are many, is visible on the case wall. The rifle is fine. The shot recoiled like a 30-06 and the bullet flew way high.


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calledflyer Frequent Elocutionist Offline Posts: 3946 Joined: Mar 9^th, 2015	Re: Heavy overloads in 32-40. What happened?? Reply #32 - May 17^th, 2015 at 12:32am	Print Post
	Zoiks, Adrian! If that one didn't lead the barrel, tell everyone what lube you were using. By the way, is that a bushed firing pin?


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Adrian Full Member Offline Posts: 122 Joined: Mar 2^nd, 2015	Re: Heavy overloads in 32-40. What happened?? Reply #33 - May 17^th, 2015 at 7:34am	Print Post
	calledflyer wrote on May 17^th, 2015 at 12:32am: Zoiks, Adrian! If that one didn't lead the barrel, tell everyone what lube you were using. By the way, is that a bushed firing pin? I don't know about the firing pin, the rifle is a CPA 44 1/2. I looked at the bore after the shot, it looked normal. I pulled a bore snake pull through once or twice and the bore looked clean. I looked for cracks in the receiver and barrel, none were visible. I pulled the rounds in the rest of the box, about 20 of them, none of them were overcharged. I re-loaded the cases with the same bullet and lube. The lube is BAC (beeswax, allox, carnauba), red, soft, and sticky. On the outing following the cursory cleaning with a bore snake the rifle was shooting just fine.


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zeke Full Member Offline Posts: 142 Location: rural Joined: Mar 25^th, 2010	Re: Heavy overloads in 32-40. What happened?? Reply #34 - May 17^th, 2015 at 11:25am	Print Post
	Hello All: Just a short note about the progress of my 32-40 reloading journey. I was not the person who shot the loads in question or else I would have stopped after the first questionable load. I ain't that brave or stupid. Lol There were two cases that were fired with too much pressure. The primers were badly pierced and the solid heads expanded to .001" over the size prior to loading. The cases had to be tapped out of the chamber with a cleaning rod both times. I had very large groups to say the least! I made the mistake of trusting my powder measure each time that I threw a charge. I have used this measure for many years and never had anything other than a perfect charge thrown. There may be a reason that I had the problem this time. I noticed that the 4759 would bridge in the drop tube. I have never had this problem but perhaps I may have never used the smaller drop tube before. The smaller drop tube that would bridge at times, had a bore of.211". The larger tube that worked flawlessly had a bore of.265". I threw each charge a bit light and dribbled the charge up to the desired weight. This served two purposes. One I could look for inconsistent drops and I could guarantee that the loads were correct. I had a great relearning time when I reloaded the new batch of shells. No to get to the range to try them! Thanks for all of the help. Zeke


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calledflyer Frequent Elocutionist Offline Posts: 3946 Joined: Mar 9^th, 2015	Re: Heavy overloads in 32-40. What happened?? Reply #35 - May 17^th, 2015 at 3:06pm	Print Post
	Zeke, I'm not surprised that you learned the hard way with that powder. Others have done the same, no doubt. I had the benefit of an old-timer, long gone now, that clued me in before I would have done it too. I still use things he had and stuff he taught me from his lifelong casting career. Or, disease, whichever it is. I have a box of bullets he cast right after the Korean war that I use as "models" for my own casting. He was pretty good. I never saw him shoot a jacketed bullet I don't think. I'm not so devoted,except with my old barrels. Yours is a typical learning curve. Fun, ain't it? Pat


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Adrian Full Member Offline Posts: 122 Joined: Mar 2^nd, 2015	Re: Heavy overloads in 32-40. What happened?? Reply #36 - May 17^th, 2015 at 4:18pm	Print Post
	zeke wrote on May 17^th, 2015 at 11:25am: I made the mistake of trusting my powder measure each time that I threw a charge. I have used this measure for many years and never had anything other than a perfect charge thrown. Zeke, i had considered purchasing a high quality powder dispenser, but considering your experience, and many other reports and comments online about various powders and powder measures, and knowing myself all too well, i decided that i will not purchase a powder measure. I would risk not adjusting the measure properly, or bridging, and it would be a chore switching to different powders. This morning i primed, flared, charged, and seated 25 rounds by the time i finished my morning coffee, just with a scale and dipper. If you come across IMR 4227, try 13 grains in your 32-40. That powder should measure well in most powder dispensers.


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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 12279 Location: Why, out West of course Joined: May 29^th, 2006	Re: Heavy overloads in 32-40. What happened?? Reply #37 - May 17^th, 2015 at 5:23pm	Print Post
	zeke wrote on May 17^th, 2015 at 11:25am: Hello All: Just a short note about the progress of my 32-40 reloading journey. I was not the person who shot the loads in question or else I would have stopped after the first questionable load. I ain't that brave or stupid. Lol There were two cases that were fired with too much pressure. The primers were badly pierced and the solid heads expanded to .001" over the size prior to loading. The cases had to be tapped out of the chamber with a cleaning rod both times. I had very large groups to say the least! I made the mistake of trusting my powder measure each time that I threw a charge. I have used this measure for many years and never had anything other than a perfect charge thrown. There may be a reason that I had the problem this time. I noticed that the 4759 would bridge in the drop tube. I have never had this problem but perhaps I may have never used the smaller drop tube before. The smaller drop tube that would bridge at times, had a bore of.211". The larger tube that worked flawlessly had a bore of.265". I threw each charge a bit light and dribbled the charge up to the desired weight. This served two purposes. One I could look for inconsistent drops and I could guarantee that the loads were correct. I had a great relearning time when I reloaded the new batch of shells. No to get to the range to try them! Thanks for all of the help. Zeke Your post sure sounds like you loaded the rounds and shot them. What did I miss?? Joe.

	A blind squirrel runs into a tree every once in a while.
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zeke Full Member Offline Posts: 142 Location: rural Joined: Mar 25^th, 2010	Re: Heavy overloads in 32-40. What happened?? Reply #38 - May 17^th, 2015 at 6:53pm	Print Post
	Hello Joe: I do not think that I implied that I was the person who shot these loads. I was the one who loaded them and took full responsibility for them. I may be wrong as my wife often gives me a F in reading comprehension! Lol Stay well, Zeke


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zeke Full Member Offline Posts: 142 Location: rural Joined: Mar 25^th, 2010	Re: Heavy overloads in 32-40. What happened?? Reply #39 - May 17^th, 2015 at 6:58pm	Print Post
	Hello Calledflyer: This is the first time that I have ever had powder bridge in a powder measure. Perhaps I have always used powder measures with large bores in the drop tubes. Stay well, Zeke


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westerner Frequent Elocutionist Offline deleted posts and threads record holder. Posts: 12279 Location: Why, out West of course Joined: May 29^th, 2006	Re: Heavy overloads in 32-40. What happened?? Reply #40 - May 17^th, 2015 at 7:01pm	Print Post
	A D is more like it. Quote = "I had very large groups to say the least!" Joe.

	A blind squirrel runs into a tree every once in a while.
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zeke Full Member Offline Posts: 142 Location: rural Joined: Mar 25^th, 2010	Re: Heavy overloads in 32-40. What happened?? Reply #41 - May 18^th, 2015 at 8:01am	Print Post
	I guess that I should have been more descriptive when I wrote about my loading problem. I should have said something like when the chap who shot the the rifle had large groups or the rifle produced large groups. When I said that I got large groups, I meant that at the end of loading and shooting I was left with large groups. When taking writing courses in the past, I remember to be very careful to make ones message very clear. Some people may mistake your message via their interpretation. I guess that I got a bit careless and relaxed with my writing. I will be more careful the next time and make my thoughts much more understandable. Good luck all, Frank


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Dr.Maynard Ex Member	Re: Heavy overloads in 32-40. What happened?? Reply #42 - May 18^th, 2015 at 5:35pm	Print Post
	Quote: Why would a ammunition "Reloader" even have a powder scale on his/her bench that is graduated into GRAMS ? Answer; The ammunition reloading bench is no place for such a scale that reads in Grains, and as an alternative, in Grams. (Potentially a dangerous situation) Either, apply Super Glue to the selection switch keeping it in the GRAINS position, thus preventing it and/or outherwise blocking it from engaging the Grams position exclusively; or better yet, take it to the dumpster or re-cycling collection point in your community. Dr.Maynard's above post was obviously a rhetorical question, which was asked in order for him to make his assertion; and not to elicit an answer from the audience. huh A what kinda question ? .
	« Last Edit: May 18^th, 2015 at 5:41pm by »

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frnkeore Frequent Elocutionist Offline Posts: 7621 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: Heavy overloads in 32-40. What happened?? Reply #43 - May 20^th, 2015 at 12:21pm	Print Post
	Something that may help this problem for people that are reluctant to change to the large dump tube because they throw loads for 17, 22 & 25, is a adaptor, similar to the one pictured. I use mine for 22RF and 25/20. I made this out of 3/8 aluminum round stock. Note the step for the two different neck sizes and on the powder measure side, a radi entry. Mine is short but, it can be made longer. With the adaptor, you will see any bridging, if it occures. Frank

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RonJonUSN Junior Member Offline Posts: 68 Location: Dias Creek, New Jersey Joined: Oct 23^rd, 2013	Re: Heavy overloads in 32-40. What happened?? Reply #44 - May 20^th, 2015 at 6:44pm	Print Post
	I always wanted to make one of these in a winter project, but never got the time. I wonder how it would work with a stick powder like 4759.


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