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Barnes TTSX 223 seating depth
#2113906
05/14/17 06:13 AM
05/14/17 06:13 AM
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Joined: Feb 2013
Posts: 7,899 Huntsville AL
Rocket62
OP
14 point
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OP
14 point
Joined: Feb 2013
Posts: 7,899
Huntsville AL
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Working up a load for Barnes TTSX 62g in 223 for a DPMS AR15
Barnes load data states a COAL of 2.25 and recommends 0.05 off the lands so in theory I'd start with 2.25 - 0.05 = 2.2" COAL
Using a gauge I measure 2.392 base to end of plastic tip which is a mile longer. Just for fun I measured base to junction of copper and plastic tip and found it to be 2.255 ... almost the same as the Barnes load data.
I'm thinking I need to start at 2.392 - 0.05 = 2.342 COAL for starters or maybe even 0.08 off the lands which would be 2.392 - 0.08 = 2.312 COAL
Insights? Are guaged COAL's on various guns going to differ that much or am I missing something?
I don't want to pass quietly into the night. I want to slide in sideways kickin and screamin Life really is awesome ... Soak it up while you can ...
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Re: Barnes TTSX 223 seating depth
[Re: Rocket62]
#2114230
05/14/17 03:45 PM
05/14/17 03:45 PM
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Joined: Sep 2007
Posts: 7,595 Hartselle, AL
trlrdrdave
14 point
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14 point
Joined: Sep 2007
Posts: 7,595
Hartselle, AL
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Since it's magazine fed don't you stick to COAL and not worry about distance off the lands?
"In time of war, send me all the Alabamians you can get, but in time of peace, for Lord's sake, send them to somebody else." General Edward H. Plummer
"Blessed are those who, in the face of death, think only about the front sight." Jeff Cooper
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Re: Barnes TTSX 223 seating depth
[Re: Rocket62]
#2114260
05/14/17 04:12 PM
05/14/17 04:12 PM
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Joined: Sep 2015
Posts: 5,241 Behind your shadow
Reloader79
Bitch Peas, I'm a Kitty Whisperer
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Bitch Peas, I'm a Kitty Whisperer
Joined: Sep 2015
Posts: 5,241
Behind your shadow
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I believe that 2.240" is as long as you can go with the ar15 mags, anything longer won't feed into it.
If I agreed with you, we'd both be wrong.
Bluetick serpentines around green fields and rock spit a lease
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Re: Barnes TTSX 223 seating depth
[Re: Rocket62]
#2114797
05/15/17 10:15 AM
05/15/17 10:15 AM
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Joined: May 2012
Posts: 12,481 Pike County, AL
Fuzzy_Bunny
Booner
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Booner
Joined: May 2012
Posts: 12,481
Pike County, AL
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Working up a load for Barnes TTSX 62g in 223 for a DPMS AR15
Barnes load data states a COAL of 2.25 and recommends 0.05 off the lands so in theory I'd start with 2.25 - 0.05 = 2.2" COAL
You theory is wrong. You may be limited by magazine length, but you have to measure the col required for the bullet you are using to touch the lands. There are several different methods you can use to do this. Freebore and bullet shape varies and is not a constant.
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Re: Barnes TTSX 223 seating depth
[Re: Fuzzy_Bunny]
#2114799
05/15/17 10:17 AM
05/15/17 10:17 AM
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Joined: Feb 2013
Posts: 7,899 Huntsville AL
Rocket62
OP
14 point
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OP
14 point
Joined: Feb 2013
Posts: 7,899
Huntsville AL
|
Working up a load for Barnes TTSX 62g in 223 for a DPMS AR15
Barnes load data states a COAL of 2.25 and recommends 0.05 off the lands so in theory I'd start with 2.25 - 0.05 = 2.2" COAL
You theory is wrong. You may be limited by magazine length, but you have to measure the col required for the bullet you are using to touch the lands. There are several different methods you can use to do this. Freebore and bullet shape varies and is not a constant. Did I not do that with the Hornady OAL guage?
I don't want to pass quietly into the night. I want to slide in sideways kickin and screamin Life really is awesome ... Soak it up while you can ...
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Re: Barnes TTSX 223 seating depth
[Re: Rocket62]
#2114802
05/15/17 10:19 AM
05/15/17 10:19 AM
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Joined: May 2012
Posts: 12,481 Pike County, AL
Fuzzy_Bunny
Booner
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Booner
Joined: May 2012
Posts: 12,481
Pike County, AL
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Here is the method i use to determine distance to the lands: Link That site has a lot of good information for developing accurate handloads, and it is worth taking the time to look around.
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Re: Barnes TTSX 223 seating depth
[Re: Rocket62]
#2114808
05/15/17 10:22 AM
05/15/17 10:22 AM
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Joined: May 2012
Posts: 12,481 Pike County, AL
Fuzzy_Bunny
Booner
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Booner
Joined: May 2012
Posts: 12,481
Pike County, AL
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Working up a load for Barnes TTSX 62g in 223 for a DPMS AR15
Barnes load data states a COAL of 2.25 and recommends 0.05 off the lands so in theory I'd start with 2.25 - 0.05 = 2.2" COAL
You theory is wrong. You may be limited by magazine length, but you have to measure the col required for the bullet you are using to touch the lands. There are several different methods you can use to do this. Freebore and bullet shape varies and is not a constant. Did I not do that with the Hornady OAL guage? You did, somehow I skipped right over that. I am home in bed fighting a virus and evidently I am on some good meds The number you got is probably right. I would load them as long as I could get them to feed, work up my powder charge and then play with reducing col to,see if it makes a difference, which it probably will, even being that far off the lands.
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Re: Barnes TTSX 223 seating depth
[Re: Rocket62]
#2114809
05/15/17 10:23 AM
05/15/17 10:23 AM
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Joined: Feb 2013
Posts: 7,899 Huntsville AL
Rocket62
OP
14 point
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OP
14 point
Joined: Feb 2013
Posts: 7,899
Huntsville AL
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Well take care and get well soon!
I don't want to pass quietly into the night. I want to slide in sideways kickin and screamin Life really is awesome ... Soak it up while you can ...
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Re: Barnes TTSX 223 seating depth
[Re: Rocket62]
#2114893
05/15/17 11:53 AM
05/15/17 11:53 AM
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Joined: Nov 2014
Posts: 58 North AL
Mike_W
spike
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spike
Joined: Nov 2014
Posts: 58
North AL
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Just set them to 2,25 and load them. You're never going to touch the lands in your AR15 and still be magazine fed.
You can reliably load to 2.258" in most standard AR15 magazine as max length for them is 2.26"
And as stated before your theory is wrong.
Also when measuring to the lands you don't measure to the tip of the bullet...you measure to the ogive using a bullet comparator
Last edited by Mike_W; 05/15/17 11:56 AM.
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Re: Barnes TTSX 223 seating depth
[Re: Reloader79]
#2115290
05/16/17 02:38 AM
05/16/17 02:38 AM
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Joined: Feb 2013
Posts: 7,899 Huntsville AL
Rocket62
OP
14 point
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OP
14 point
Joined: Feb 2013
Posts: 7,899
Huntsville AL
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I believe that 2.240" is as long as you can go with the ar15 mags, anything longer won't feed into it. Measured mine this morning, 2.237" Good info, thanks. It doesn't make a lot of sense to chase the lands if it can't fit in a magazine
I don't want to pass quietly into the night. I want to slide in sideways kickin and screamin Life really is awesome ... Soak it up while you can ...
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Re: Barnes TTSX 223 seating depth
[Re: Rocket62]
#2115716
05/16/17 12:55 PM
05/16/17 12:55 PM
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Joined: Sep 2015
Posts: 5,241 Behind your shadow
Reloader79
Bitch Peas, I'm a Kitty Whisperer
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Bitch Peas, I'm a Kitty Whisperer
Joined: Sep 2015
Posts: 5,241
Behind your shadow
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I believe that 2.240" is as long as you can go with the ar15 mags, anything longer won't feed into it. Measured mine this morning, 2.237" Good info, thanks. It doesn't make a lot of sense to chase the lands if it can't fit in a magazine I already been through everything your doing, so if I can help let me know. I measured the ogives on every bullet I have and some were closer than others, but all were limited to magazine length so I just loaded them all to 2.240" and let it eat.
If I agreed with you, we'd both be wrong.
Bluetick serpentines around green fields and rock spit a lease
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Re: Barnes TTSX 223 seating depth
[Re: Rocket62]
#2117479
05/18/17 02:39 PM
05/18/17 02:39 PM
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Joined: Feb 2013
Posts: 7,899 Huntsville AL
Rocket62
OP
14 point
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OP
14 point
Joined: Feb 2013
Posts: 7,899
Huntsville AL
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Some off brand, not even labeled. I'm switching to a Toolman Tactical, getting 2.275" with it. I'm gonna just seat 5-6 rounds with different charges at 2.25" and see where my pressure breakpoint is. After I find it and back off a bit I'll tinker with the seating depth Thanks All, especially horsey300
I don't want to pass quietly into the night. I want to slide in sideways kickin and screamin Life really is awesome ... Soak it up while you can ...
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