SLOW JACKETED BULLETS

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  • Last Post 03 February 2017
joeb33050 posted this 28 December 2016

SLOW JACKETED BULLETS 

I’ve loaded and shot some jacketed bullets at cast bullet velocities, with Titegroup powder.

In 223 and 22-250 I’ve used 5.7 to 8 grains of Titegroup with 225438, 225415 and 225646M cast bullets.

Most are five, 5 shot 100 yard groups in inches. The successful jacketed bullet loads have been: 

Savage M12 with Iffland HV barrel, 223 

Nosler 40 gr. Varmageddon bullet

11/25/16; 7.0 Titegroup; .9, 1.025, .675, .675; average .819

11/28/16; 7.0 Titegroup; .95, .825, .55, .975, .75; average .810 

1/4/17; 7.5 Titegroup, 1.025, .8, .9, 1.05, .6; average .875

Midway Dogtown 55 gr SP

12/19/16; 6.0 Titegroup; 1, .825, 1.5; average 1.108 

Hornady V Max, 55 gr

1/18/17; 11.5 IMR4227, 1.1, 1.1, 1, .775, .75; average .945 

Savage Striker Pistol, 22-250

Nosler 40 gr. Varmageddon bullet

5/20/16; 7.0 Titegroup; .95, .575; average .763

12/5/16; .625, 1.125, .725, .7; average .794

12/26/16; .85, 1.125, 1.326, .6; average .975 

Midway Dogtown 55 gr SP

12/26/16; 7.0 Titegroup; 1.3, .875, .9, 1.1, 1.2; average 1.075

1/13/17, 7.5 Titegroup, .95, 1.1, 1.025, 1.45, .85; average 1.075

1/20/17, 8.0 SR4756, .8, 1.0, .85, 1.175, .7; AVERAGE .905

SAVAGE M10, SHILEN 22-250 BARREL

Midway Dogtown 55 gr SP

2/3/17, 8/SR4756, .85, .975, .8, 1.3, .7; average .925

 

The Dogtown bullets are maybe second quality, and probably a mistake. 

I’ve shot just-under-minimum-recommended jacketed bullet loads, and always got some green/blue with Hoppes #9. Only a few slow jacketed bullets gave any green/blue; there’s almost no copper fouling.

1/20/17 Starting to see VERY little green on some patches.

It appears that jacketed bullets shoot more accurately than cast bullets in my guns, at the cast bullet velocities I use. 

joe b.

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GP Idaho posted this 28 December 2016

Just  funnin' a friend, but most likely why they started putting jackets on bullets in the first place.  I'm with you on copper fouling. I would ten times rather clean out a leaded bore than a badly copper fouled one. I fired about 50 rounds at nearly 4000fps out of my Savage 112 with out stopping to clean (22-250)  and learned a valuable lesson about  high velocity jacketed bullets and copper fouling.  Happy new year!  Gp

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Ken Campbell Iowa posted this 28 December 2016

hey !... joe can shoot ..... ! ....deer rifles are a challenge even with some bags ...... also i would give him 1/4 inch handicap for his factory triggers ...

i find nosler 55 gr ballistic tips the most consistently accurate of common commercial 22 bullets . 

hmmm . squirrel head shots at 200 yards .... a goal for casters ...

... anyway, seems seems valid to test shooter skill with slow mj .

ken

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joeb33050 posted this 04 January 2017

see 1st post for updated groups

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OU812 posted this 04 January 2017

i find nosler 55 gr ballistic tips the most consistently accurate of common commercial 22 bullets . 

hmmm . squirrel head shots at 200 yards .... a goal for casters ...

ken

I find Moly coated nosler 55gr ballistic tips most accurate, but that was back when Moly coating was more popular (year1996). Why has moly coating popularity faded?

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RicinYakima posted this 04 January 2017

Molly coating did not prove to do what it claimed for accuracy. During season long records (1000+ record shots) it was no better or worse than guilding metal uncoated bullets. Same with the current fad, powder coating; it just doesn't work on the target.

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billglaze posted this 09 January 2017

Joe, I've currently shooting my Savage M12 in 6mm Norma BR using Berger 90 Gr. Match and Sierra 70 Gr. Matchkings.  By sheer luck, I fumbled onto a very moderate load of Varget that the rifle seems to love; groups in the 2's are routine, with some going into the 1's, depending on how good 'ol Shakey Fingers is holding.  Have you tried any Match Grade bullets to see if they would show a difference?

Bill

In theory, there's no difference between theory and practice. In practice, there is. My fate is not entirely in Gods hands, if I have a weapon in mine.

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joeb33050 posted this 09 January 2017

Joe, I've currently shooting my Savage M12 in 6mm Norma BR using Berger 90 Gr. Match and Sierra 70 Gr. Matchkings.  By sheer luck, I fumbled onto a very moderate load of Varget that the rifle seems to love; groups in the 2's are routine, with some going into the 1's, depending on how good 'ol Shakey Fingers is holding.  Have you tried any Match Grade bullets to see if they would show a difference?

Bill

Bill; I'm shooting cast bullet loads, ~ 7.0 Titegroup,  with jacketed bullets, a big experiment. The Midway Dogtown bullets don't seem to shoot well. Nosler 40 gr Varmageddon shoot very well. I just bought some bullets, have Hornady V Max in 50, 53, 55, 60 and 68 grains, some loaded for tomorrow. I'm interested in the < 1” average 5 groups 5 shots 100 yards. I don't think I can reliably shoot much under 1” .

joe b.

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.22-10-45 posted this 09 January 2017

Interesting stuff!  The latest Handloader has an article on reduced loads for jacketed bullets and suggested using cast load data..for really reduced loads..recommends using next size ctg. down cast bullet start load..example:  Use .250-3000 Savage cast start load for .257 Roberts with jacketed.  Powders were on the fast side..4227 & Unique.

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Ken Campbell Iowa posted this 10 January 2017

.... now that i am way over 65, i can confess with dignity that a favorite load in my 257 weatherby was the hornady 60 grain intended for the 25-20 ....  with 1800-2200 fps powder charges ... groups about as good as my serious coyote loads ...  vaporized starlings ... and interesting in the context of small powder charges in large cases ...  used unique to 4227, mag primer , no filler .

ken

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SierraHunter posted this 12 January 2017

We know jacketed will work with lower velocity. If they didn't, the 300 blackout would not have a 7” twist designed specifically to shoot slow.

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joeb33050 posted this 12 January 2017

We know jacketed will work with lower velocity. If they didn't, the 300 blackout would not have a 7” twist designed specifically to shoot slow.
The 7” twist is to stabilize long heavy bullets. The Lee 300 BO bullet is 1.365” long, weighs ~ 230 grains and will stabilize in 10” twist barrels at 1700 fps, DELL; 450 fps, POWLEY; and 650 fps MILLER with Sg = 1.5.
The 7” twist for 30 caliber looks like a solution in search of a problem, the Lee bullets stabilize in my 12” twist 308 barrel. Velocity has little effect on stability, so bullets remain stable at low velocity.
I have a workbook about twist, bullet length and weight and stability for Greenhill, Dell, Powley and Miller twist formulas. I'll be happy to send it, [email protected] 

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SierraHunter posted this 12 January 2017

Shooting the 235gn bullets I currently am, if I run them slower then about 1050 FPS in the 7” twist I start to get patterns instead of groups, and my holes are slightly out of round on the paper. I did try a few in a 10” twist 308 and had to run them up to 1600 before they made round holes.

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joeb33050 posted this 12 January 2017

Shooting the 235gn bullets I currently am, if I run them slower then about 1050 FPS in the 7” twist I start to get patterns instead of groups, and my holes are slightly out of round on the paper. I did try a few in a 10” twist 308 and had to run them up to 1600 before they made round holes.
Correct, and I'm shooting 22s at CB velocities, ~ 1400/1500 fps with 9, 12 and 14” Velocity ain't coming into play.
joe b.
 twist.

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joeb33050 posted this 13 January 2017

See the first post for updated info.

joe b.

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joeb33050 posted this 18 January 2017

See first post for update

 

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joeb33050 posted this 20 January 2017

See first post for update.

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joeb33050 posted this 03 February 2017

NEW RESULTS ON FIRST POST, ON THIS DAY 225646M, 7.5 TITEGROUP MADE NO DETECTABLE GROUPS IN 26 SHOTS

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