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Old Soldier
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Round balls in 38-55
Feb 2nd, 2019 at 9:26pm
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Any of you try .375 Round balls in a 38-55? 10-25 yards is fine, I'll shoot them in my back yard, or in my garage. Smokeless or BP is OK too. Any loads? any Luck?
  

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svartkruttgris#369
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Re: Round balls in 38-55
Reply #1 - Feb 2nd, 2019 at 10:15pm
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Old Soldier wrote on Feb 2nd, 2019 at 9:26pm:
Any of you try .375 Round balls in a 38-55? 10-25 yards is fine, I'll shoot them in my back yard, or in my garage. Smokeless or BP is OK too. Any loads? any Luck?


Never done them in 38-55 but have used extensively in 44-40, 45 Colt, 50-70. Worked best for me with BP. Used about one diameter larger RB than nominal correct size -- this resulted in a flat band around the ball when seated into a belled case. Better groups out to 100M with that flat band. Used felt wad over powder, some good BP lube and then RB. Crimped above that flat band. 44-40 and 45 Colt basically replicated full-load 44 C&B revolver performance, 50-70 was good out to well over 100M, much like a 50cal RB in muzzle loader.

Never tried any powder other than BPs for CAS matches. These loads could have been lighter, just by using less BP and seating RBs deeper into case.

Also deepseated light bullets over BP in 45 Colt cases, as well as with light nitro powder loads, with felt wads and lube under bullet, which was seated firmly down far enough to leave no air space. Also shot well from revolvers. Did take more time to develop these loads than simply a "full case" of BP under RBs.
  
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Re: Round balls in 38-55
Reply #2 - Feb 3rd, 2019 at 8:42pm
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Tried some loads this evening. 5 grains of Trail Boss with .375 ball seated in mouth of case. Shot higher at 50' than my 100 yard site setting with full house BP loads. Also very position sensitive. No Go. Tried same charge but pushed the ball down on the powder. Don't like it. Too much chance of variable pressure while seating the ball. Filled case to the top with FFFG Swiss, used a 36 pistol over the powder greased wad. Shot OK but at 1 o'clock about 2" out. 35 grains of FFFG shot closer to POA . Not too happy with either. May try 35 grains again. I want an easy plinking in the back yard and shoot grouse in the head at 10 yards load. Needs to shoot close to POA of normal load. I'll keep playing. It's not that far from my bench to the back yard.
  

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svartkruttgris#369
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Re: Round balls in 38-55
Reply #3 - Feb 4th, 2019 at 6:19pm
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My go-to 50-70 RB loads all used full case of 777FFg or sloooow nitro powder and shot close to sights on a Husqvarna kombi gun and were rather pleasant to shoot. Never tested them for head shooting grouse -- used 16X65 barrel for grouse and desert quail. Had hoped to shoot something bigger with those RB loads but none of the critter options ever presented themselves.
  
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Re: Round balls in 38-55
Reply #4 - Feb 4th, 2019 at 6:57pm
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A round .375 ball in a .375 groove, leaves almost no bearing area to grip the rifling, giving accuracy, similar to smooth bore barrels.

You need a RB about .010 over groove diameter to get enough purchase on the ball to spin it reliably. Even then, most people have accuracy problems, if trying to exceed the speed of sound. 600 to 900 fps is usually where you can get repeatable accuracy.

Frank
  

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Re: Round balls in 38-55
Reply #5 - Feb 4th, 2019 at 8:10pm
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frnkeore wrote on Feb 4th, 2019 at 6:57pm:
A round .375 ball in a .375 groove, leaves almost no bearing area to grip the rifling, giving accuracy, similar to smooth bore barrels.

You need a RB about .010 over groove diameter to get enough purchase on the ball to spin it reliably. Even then, most people have accuracy problems, if trying to exceed the speed of sound. 600 to 900 fps is usually where you can get repeatable accuracy.

Frank


Basically same as my experience with 50-70 RB loads, where I needed .54" round balls for acceptable accuracy. This combination of 0,515" grove-to-grove barrel and 0,540" pure Pb RB resulted in a nice band of about 0,530" when seated into fireformed cases. Downrange consistancy of trajectories from shot-to-shot suggest "consistancy of velocities. Never chronoed these loads. Never tried to recover fired RBs.
  
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Re: Round balls in 38-55
Reply #6 - Feb 4th, 2019 at 8:41pm
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I bought some 45-70 brass with the primer pocket opened up to accept shotgun primers, to be used without gunpowder. Fired a round ball in the basement, hit a nail in the backstop and split the ball in two. very potent. Joe S
  
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Re: Round balls in 38-55
Reply #7 - Feb 4th, 2019 at 8:42pm
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I think wax bullets are available in 38 cal, would also work quite well with primer only for garage shooting. Would not recommend indoor use due to the lead in the primer dust.
Joe S
  
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frnkeore
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Re: Round balls in 38-55
Reply #8 - Feb 5th, 2019 at 2:46am
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I didn't have any success, trying to shoot .32 (00 Buck) in my German rifles (8.15x46R) groove of .316, using only the 209 primers. I was hoping it would do it but, the balls stuck in the barrel. I had to use 1 gr of B'eye. It was my version of a Zimmerstuzen.

Frank
  

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Re: Round balls in 38-55
Reply #9 - Feb 5th, 2019 at 11:11am
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I opened some 45-70 brass up to accept 210 primers and then used my Lee molds to cast glue bullets - Place the mold in the freezer while the hot glue gun is warming, fill the mold, back to the freezer for 2 minutes, they drop nice.  If you're going to shoot many, smear a little vaseline on the bullet before seating.  I caused considerable uneasiness in the Asian dove ranks one afternoon. Indoors where there is no wind, accuracy was surprising, smoke and fouling is minimal - compared to a powder charge - although LR primers and 3 grains of Bullseye works too.
  

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Re: Round balls in 38-55
Reply #10 - Feb 5th, 2019 at 11:33am
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I meant to add that I tried round balls in both the 38 and 45's with terrible accuracy.  I tried turning some sabots from different material and this led to the glue bullets, on a whim.  I've heard concerns about the fouling possibilities of glue - haven't seen any.  Getting the mold cavity filled completely takes a little practice and patience.
  

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Re: Round balls in 38-55
Reply #11 - Feb 5th, 2019 at 4:11pm
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I used to do 3 round balls in the .375Win.  Grouped well at reasonable distances.  (this was at least 40 years ago.)
  

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Re: Round balls in 38-55
Reply #12 - Feb 6th, 2019 at 11:10pm
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In very light loads like these we've found that primers can make a big difference in accuracy. We've generally gotten better results with pistol primers.

JS
  
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Re: Round balls in 38-55
Reply #13 - Feb 10th, 2019 at 7:45pm
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I just talked to a friend who has been shooting .375 balls in his Douglas barreled 38-56. He was shooting 5 gr. of Bullseye and rifle primers. He said he was shooting them into one hole at 25 yards, 1" at fifty yards, and a little over 2" at 90 yards.

JS
  
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Re: Round balls in 38-55
Reply #14 - Feb 12th, 2019 at 11:05am
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Good info, thanks. Just loose 5 grains of Bullseye, or is he using a filler?
  

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