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Very Hot Topic (More than 25 Replies) 40-65 Sizing Problems (Read 17274 times)
vp146b4
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40-65 Sizing Problems
Oct 26th, 2013 at 5:08pm
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Loaded and fired new Starline brass in my resently aquired Browning. Set up the Lyman dies I got with the rifle per instructions by screwing the die down until it touched the shell holder. Lubed and sized the first piece and there were wrinkles about an inch down from the mouth, all the way around the piece. I had a brand new RCBS set of dies, set them up the same way, and the same type of wrinkles happened. I then backed the die up 1/2 turn, and again no change. I've sized 45-70 brass for years without anything like this.
Could the once fired brass be too long? I haven't found anywhere that states the max length of 40-65.
Any suggestions?
Thanks in advance.
  
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westerner
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Re: 40-65 Sizing Problems
Reply #1 - Oct 26th, 2013 at 5:16pm
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Wrinkles? Dents? Sounds like lube dents. To much lube.

   Joe.
  

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John Boy
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Re: 40-65 Sizing Problems
Reply #2 - Oct 26th, 2013 at 5:52pm
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Quote:
Sounds like lube dents. To much lube.

I'll second this ... too fast on the down stroke and too much lube.
Best lube for FL sizing the same calibers and reforming other calibers ... Bag Balm.  Just a light swipe of the finger on the case is all that is needed
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PS: A can will last 5 life times!
  
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SSShooter
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Re: 40-65 Sizing Problems
Reply #3 - Oct 26th, 2013 at 8:28pm
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Will 3rd the 'too much' lube suggestion.
Case length on the 40-65 is the same as the 45-70, at 2.10".
My experience in sizing Starline from 45-70 to 40-65 is that it does a good job of maintaining the 2.10" length. Occasional lube-dent, but small and they iron right out on the first firing.
  

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colo native
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Re: 40-65 Sizing Problems
Reply #4 - Oct 27th, 2013 at 8:16am
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try imperial sizing lube and use very little..  have used since the early 60's   great stuff..
  
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vp146b4
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Re: 40-65 Sizing Problems
Reply #5 - Oct 27th, 2013 at 8:58am
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westerner wrote on Oct 26th, 2013 at 5:16pm:
Wrinkles? Dents? Sounds like lube dents. To much lube.

   Joe.

Joe,
You were right on. Odd though, I've sized 45-70 using a lube pad and RCBS lube for years and always the first couple of pieces had a heavy coating after aplying the lube to the pad, and I never had lube dents before.
I used Imperial Sizing lube, this morning, and the 40-65 brass came out just fine. I've always used Imperial on all my bottle neck brass, it was just easier to use the pad with straight wall cases. Easiest isn't always the best. 
Thanks
  
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texasmac
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Re: 40-65 Sizing Problems
Reply #6 - Oct 27th, 2013 at 7:04pm
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vp146b4,

Assuming the Browning .40-65 is the BPCR model with the 1/2 octagon 1/2 round heavy barrel (made by Badger), you have a potential advantage reforming .45-70 brass.  The Browning chamber (I precisely measured several for my book on the rifles and for my reloading) needs a full length case of 2.125" to closely match the chamber length.  If I were you, after reforming, I'd trim the brass to 2.130", which will allow for some shortening when fired.  Afterwards, if you plan on reloading the "fire formed" brass without full length resizing, they should be close to the ideal length, maybe .001" to .002" shorter.  If you plan on full length resizing each time you reload, then you do not need to trim the resized cases until they exceed 2.130".

Wayne
  

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ireload2
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Re: 40-65 Sizing Problems
Reply #7 - Nov 1st, 2013 at 1:44pm
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I have purchased 40-65 brass formed from 45-70 by a shooter who knew far more about BPCRs than me. However he lost about 30 cases out of 150 new WW cases due to the same denting problems. Many of the 120 survivors have slight lines where denting would have occured if there had been a little more lube.

I had the same issues when beginning to form cases from R-P brass. I have several 40-65 dies sets including RCBS original .406, RCBS Cowboy, Redding and Lyman. All of the FL dies would initiate lube dents if I tried to size in one stroke.  I then tried to size using shorter strokes.  When I got the case mouth down to the finished 40 cal diameter I shortened each stroke to 1/4". Between each stroke I removed excess lube at the junction of the neck and case body taper. Excess lube is something of an overstatement since there was not much to begin with. It took about another 3 to 4 strokes to finish the brass but I lost only a couple cases learning the process.  
I would advise that you avoid using cases that have a knurled cannelure. The dent artifacts serve as small traps for lube and points where lube dents are initiated. I have ran into this issue with once fired Federal brass.  If you have any dented brass I would that you leave it as 45-70 brass or shoot it once to to blow out any dents. Otherwise existing dents and nicks will serve as points for lube dents to start.


  
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Re: 40-65 Sizing Problems
Reply #8 - Nov 1st, 2013 at 6:04pm
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I got out of the lube dent business right after I started reloading.  I was told to not use lube.  No lube, no dents.  After I got up the courage to try it, I never went back to liquid lube.

What the secret is to avoid liquid lube is to use paraffin wax to keep the brass from sticking to the die.   

Hold the case in your fingers, and roll it across a piece of paraffin held in your other hand.  You end up with a little snail trail of wax around the case.  If you think you need it, do two or three of them.  The first time you do it, do a lot of them on the first case.  When I get going, I do only the area of the case that is sized the most in the die, usually a bit behind the shoulder.  If it's a necked case, I do a bit on the neck and also behind the shoulder.   

What the paraffin does is lube the die for the NEXT round you size.  The slight taper of most cases does a good job of rubbing the wax upwards and over all the surfaces of the die.  Occasionally, you will have a small thin scrap of wax fall out of the die, where the neck of the case has scraped accumulated wax off.  If you forget to lube one case, it will work.  Two won't.   

I was told this was good only for straight wall cases when I started.  I have since experimented, and use it for everything.  It works particularly well for reforming brass, as it doesn't cause dents or wrinkles.  Just roll a bit more on the neck/shoulder area of the parent case before you start.

A side benefit of this is that the cases don't come out sticky with lube and make a mess of everything.  They're ready to load and use, no mess, no wiping off, no tumbling in corn cob, no cleaning.

dave
  
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SSShooter
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Re: 40-65 Sizing Problems
Reply #9 - Nov 2nd, 2013 at 5:58am
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Another problem that a fellow shooter ran into that was giving him neck creases and dents was a dirty/rusty sizing die. It was a new die, but had some corrosion on the inside surface. He had not cleaned from new and it caused him no end of problems until he cleaned it well. Am using Mobil 1 for the case lube. In 10 years of reloading have all ready used up about 2 oz. That quart will likely still be half full when I keel over.
  

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harry_eales
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Re: 40-65 Sizing Problems
Reply #10 - Nov 3rd, 2013 at 3:38am
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Oddly one of the best lubricants I have found when full length resizing or case forming was a 1 foot square piece of cloth impregnated with silicone. It leaves no visible trace on the case but it leaves them  as slippery as a greased pig. Each cloth did about 5,000 cases before it needed renewing. It was sold as a gun wiping cloth and cost about £1.50p or just under a couple of bucks in US greenbacks back then, but it is probably twice the price these days.  Cry

Harry
  
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Re: 40-65 Sizing Problems
Reply #11 - Nov 3rd, 2013 at 10:35am
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Harry,
Agree silicone is a fine lubricant, but do not allow it in my shop. Contaminated a shop once with silicone saddle oil. Afterwards, epoxy would not stick and no way to clean it up. Took a hint from commercial adhesive users and just don't allow it.
Chuck
  
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Re: 40-65 Sizing Problems
Reply #12 - Oct 22nd, 2015 at 6:28pm
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I know this is an old thread but figured best to revive rather than starting another... Being my question is  sizing related.

Recently picked up a Marlin 1895 in 40-65.    Also have a Ballard in for reline.

Picked up a set of RCBS CB dies and was disappointed to find the FL sizer brought the neck down to .421 or .422.    I'd like to size that 1/2" neck no more than .427.    Does anyone know the size of the Lyman neck sizing die they sell?   Or if any available dies run large in the neck?

I was thinking of homing out my CB but it's hardened so that might be a real project, plus I'd likely break through the hardened depth.

That CB sizer is a consistent cylinder for 1/2 inch, so even short stroking for a partial sizing would get you back to .421 or .422 for whatever depth of your neck sizing you chose.

Fwiw, I can seat a .409 bullet in an 'as fired' case and that would work for the single shot but neck tension wouldn't work for a lever.   Plus the fire-formed case from the lever only leaves you about a 1/4" of neck tension since the chamber taper in runs way up into the neck area.

Figure a neck sizer with a half inch neck at .427 would serve both rifles.

Any thoughts?
  

Best Regards,
John
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stubbicatt
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Re: 40-65 Sizing Problems
Reply #13 - Oct 22nd, 2015 at 8:07pm
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Perhaps one of those Buffalo Arms custom expander plugs might help. I understand your concern about over working the brass.

Another option might be just seating the bullets by thumb and crimp?
  
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Re: 40-65 Sizing Problems
Reply #14 - Oct 22nd, 2015 at 8:23pm
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I do this for both the .405 Win and .40-65.

Partially FLS just enough so that expanding works.  Found by experimenting.

Expanding I use a 2 or 3 diameter expander made from cold rolled steel that fits the WILSON 7/8-14 holder.   

First is the small diameter - leaves .001 to .002 tension on the bullet.  Second diameter is .001 clearance - so the bullet JUST slides in.  Then either a bevel or a slightly larger diameter so bullet can be inserted into the case without shaving it.

Minimum sizing and minimum expanding.
  

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