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1884 Trapdoor difficult to extract (Read 523 times)

emmett22405 Full Member Offline Posts: 157 Location: Virginia Joined: Sep 21^st, 2009	1884 Trapdoor difficult to extract Apr 7^th, 2024 at 12:32pm	Print Post
	Dusted off my 84 in 45/70 after several years off and was amazed to find that most of my cast 300 grain sized .458 would not let the trapdoor close, or if it closed the handle rested over the firing pin and blocked the hammer from striking it or even if the trapdoor closed and then fired, was almost impossible to remove the fired --or nonfired cartridge. OAL was under 2.55 the lot. Out of 40 rounds about 6 fired What gives??? I tried the Lee Factory creimp die and 2 more went into the chamber OK Help please. Thanks


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1Hawkeye Junior Member Offline Posts: 60 Joined: Jun 29^th, 2019	Re: 1884 Trapdoor difficult to extract Reply #1 - Apr 7^th, 2024 at 5:54pm	Print Post
	It could be a couple of things. The rounds could be was oversized .480" is the spec diameter for the round at the case mouth or it could be something in the chamber preventing the rounds from seating properly.


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emmett22405 Full Member Offline Posts: 157 Location: Virginia Joined: Sep 21^st, 2009	Re: 1884 Trapdoor difficult to extract Reply #2 - Apr 8^th, 2024 at 9:41am	Print Post
	Thanks. You are right in a way as i found out late last night All my cases from either Starline or WW measured in spec in every dimension empty or loaded EXCEPT that the vast majority of my Starline cases have too thick a rim ie well over 0.070" and they will not chamber or if they do have to be beaten out with vigor. The WW are all UNDER 0.070 and work like a charm. Sadly, I used only Starline brass at the range .


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boats Frequent Elocutionist Offline Posts: 7474 Location: Virginia Joined: Apr 23^rd, 2004	Re: 1884 Trapdoor difficult to extract Reply #3 - Apr 11^th, 2024 at 5:25am	Print Post
	Trapdoors are very good extractors except with faulty ammunition, one of the things that Custer had trouble with. Depending on how much oversize the cases are and after inspecting the rifles rim recess for burrs etc Think I would experiment with reducing the Starlines rim thickness. Lot of us use use pistol primers for mild smokeless or BP loads. They are a bit shorter, could facing off some of the cases base leaving adequate thickness to fully seat the pistol primer & cure the problem Be simple to hold the cases in a loading die chuck the die in the lathe and face off a few thousandth. Lot faster than reducing thickness on the front side. Boats


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gnoahhh Oldtimer Offline Posts: 747 Location: Annapolis, MD Joined: Mar 31^st, 2010	Re: 1884 Trapdoor difficult to extract Reply #4 - Apr 11^th, 2024 at 8:06am	Print Post
	boats wrote on Apr 11^th, 2024 at 5:25am: Trapdoors are very good extractors except with faulty ammunition, one of the things that Custer had trouble with. Depending on how much oversize the cases are and after inspecting the rifles rim recess for burrs etc Think I would experiment with reducing the Starlines rim thickness. Lot of us use use pistol primers for mild smokeless or BP loads. They are a bit shorter, could facing off some of the cases base leaving adequate thickness to fully seat the pistol primer & cure the problem Be simple to hold the cases in a loading die chuck the die in the lathe and face off a few thousandth. Lot faster than reducing thickness on the front side. Boats And if that method results in a too shallow primer pocket by a couple thousandths it's a simple matter to also deepen it by a like amount with a primer pocket cutter to restore it.


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MartiniBelgian Frequent Elocutionist Offline Posts: 1648 Location: Aarschot Joined: Jun 7^th, 2004	Re: 1884 Trapdoor difficult to extract Reply #5 - Apr 12^th, 2024 at 2:36pm	Print Post
	Looks to be so much easier to just dedicate some win. brass to that rifle instead of modifying the Starline...


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boats Frequent Elocutionist Offline Posts: 7474 Location: Virginia Joined: Apr 23^rd, 2004	Re: 1884 Trapdoor difficult to extract Reply #6 - Apr 13^th, 2024 at 6:32am	Print Post
	For sure best remedy is use the correct brass. Boats


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Timetripper Junior Member Offline Posts: 97 Location: Carlisle Joined: Mar 4^th, 2013	Re: 1884 Trapdoor difficult to extract Reply #7 - Apr 13^th, 2024 at 7:52am	Print Post
	This is the second report I've seen of difficulties with Starline 45-70 brass. The first was on another forum earlier this month and was about newly purchased cases being under diameter, even after an initial resizing. The OP on that one tried to contact Starline but without results. I suggested he anneal the cases. Personally, I've never had any issues with any of the Starline brass in my collection. John


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boats Frequent Elocutionist Offline Posts: 7474 Location: Virginia Joined: Apr 23^rd, 2004	Re: 1884 Trapdoor difficult to extract Reply #8 - Apr 13^th, 2024 at 10:01am	Print Post
	Fact is little uniformity brass headstand to headstamp. Loading calibers like we use rifles chambers vary widely too. Due obscure calibers or short brass supply often have to make adjustments. If I had a good supply of Starline 45/70 would probably alter it. Even common volume cartridges have fit issues. Use range pick up 9 mm best sort out known problems or cases used in loose chambered guns. “Glocked” well known. Easier to sort and toss with 9’s Boats


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