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#6246684 - 03/02/12 Cast bullets in micro groove barrels  
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minnmarcus Offline
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minnmarcus  Offline
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some where in Minn.
Have any luck with these? 45-70 in particular.

CMG 300 BP

#6262336 - 03/07/12 Re: Cast bullets in micro groove barrels [Re: minnmarcus]  
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Lunarphase Offline
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No problem at all, they will shoot great.
The Ranchdogs shoot well and if you want something with more stopping power check out Beartooth.


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#6262872 - 03/07/12 Re: Cast bullets in micro groove barrels [Re: minnmarcus]  
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Roundup Offline
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Eastern Oregon
I have a Marlin 45/70 in Microgroove. I have had very good result both in velocity (no or negligible leading) and accuracy. I have used several commercial offerings and have settled on, for elk hunting, the Beartooth 425 gr gascheck sized .460.


Happy Trails!
NRA Life Member
#6289150 - 03/13/12 Re: Cast bullets in micro groove barrels [Re: Roundup]  
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minnmarcus Offline
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some where in Minn.
Reason I ask is I bought some 405 gr casts and my groups have been terrible, some going through side ways at 100 yds. This gun shoots 1 1/2 " groups at 100yds with jacketed bullets and 6-8" groups with casts. Need gas checks?

#6291977 - 03/14/12 Re: Cast bullets in micro groove barrels [Re: minnmarcus]  
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NWPA Offline
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I found out early that my 45/70 with microgroove bbl. didn't like cast at .458. But when used as cast at .460 things took a turn for the better.And with out gaschecks too.

Alpha

#7290544 - 01/09/13 Re: Cast bullets in micro groove barrels [Re: NWPA]  
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blammer Offline
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the cast bullets, do your bullets have a flat base or are they "boat tailed"?

Last edited by blammer; 01/09/13.

Whatever you are willing to put up with, is exactly what you will have.

When your ship comes in. ... make sure you are willing to unload it.
#7291003 - 01/09/13 Re: Cast bullets in micro groove barrels [Re: minnmarcus]  
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1minute Offline
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A buddy's unit does very will with cast/gas checked slugs. Like near 1 moa. If one is running smokeless, he should be using checked slugs.


1Minute
#7292105 - 01/09/13 Re: Cast bullets in micro groove barrels [Re: 1minute]  
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I've had good luck with cast bullets in the micro groove barrel, provided the bullet is slightly oversize. With groove diameter cast bullets they shoot well with low velocity plinkers. For full power loads, they work best when a couple of thousandths over groove diameter.


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#7296791 - 01/10/13 Re: Cast bullets in micro groove barrels [Re: blammer]  
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NWPA Offline
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My Lyman and RCBS molds cast a flat base, but I also shoot a local commercial cast beveled base 350 gr. as cast at .460 (unsized) which does well out of the micro-groove bbl.

#7505669 - 03/02/13 Re: Cast bullets in micro groove barrels [Re: NWPA]  
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minnmarcus Offline
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minnmarcus  Offline
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some where in Minn.
With out gas checks?

Bravo

#8199505 - 10/28/13 Re: Cast bullets in micro groove barrels [Re: minnmarcus]  
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Mssgn Offline
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upstate NY
Originally Posted by minnmarcus
Reason I ask is I bought some 405 gr casts and my groups have been terrible, some going through side ways at 100 yds. This gun shoots 1 1/2 " groups at 100yds with jacketed bullets and 6-8" groups with casts. Need gas checks?


My 1895G shoots far beter with plain base bullets (no gas checks) than with gas checeked lead. The load you use can affect accuracy a lot too. Groupc could easily vary by a few inches at 100 yards depending on how many grains of powder you are using and which powder you choose....


"Delight yourself in the Lord and He will give you the desires of your heart." Psalm 37, verse 4.


"The lazy do not roast any game, but the diligent feed on the riches of the hunt." Proverbs 12:27
#8412670 - 12/31/13 Re: Cast bullets in micro groove barrels [Re: Mssgn]  
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JBLEDSOE Offline
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Caldwell Idaho
.

Micro-groove will not shoot cast bullets. That is purely a myth. As with any barrel the cast bullet must fit or it will not shoot well. Micro-groove is a button rifling process and will make the groove dia. slightly larger than a cut rifle barrel. That means that a MC barrel will usually require a cast bullet .001 or so larger the a Ballard or cut rifling barrel.

Jacketed bullets seldom require an accurate fit to shoot well but the cast bullet needs a perfect fit to shoot it's best otherwise the powder flame can escape past the bullet as it moves down the barrel. The flame cutting of the bullet will destroy accuracy.

My rifles like a LaserCast 405 bevel base bullet over 13 grains of Unique at about 1300 fps. No filler. That closely matches the original Black Powder loading. It is also a killer on any game animal in North America. And, it doesn't kick the snot out of the shooter.

.

#8414489 - 12/31/13 Re: Cast bullets in micro groove barrels [Re: JBLEDSOE]  
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340mag Offline
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Originally Posted by 340mag
[Linked Image]
http://www.neihandtools.com/catalog/index.html
I found this bullet to be especially accurate in my marlin 45/70 over 45 grains oF IMR 4198, Im not sure what velocity youll get in your rifle but cast from 95% wheel weights and 5% tin,well lubed its accurate,and it shoots thru deer,hogs and elk real well with expected results..very dead game

http://www.handloads.com/loaddata/default.asp?Caliber=45-70&Weight=All&type=rifle&Source

#8568188 - 02/10/14 Re: Cast bullets in micro groove barrels [Re: 340mag]  
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deerstalker Online content
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North of Bonners Ferry ID.
my 95 microgroove was terrible with 405's . tried 325's and brought it in to 1.25 inch groups consistently . never got to check the twist before someone borrowed it forever f-ing thieves!


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