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#7059075 - 01/30/18 05:01 PM Short-barreled 308
snarkscarbine Offline
Woodsman

Registered: 01/01/17
Posts: 209
Loc: DFW
Fixin to rebarrel my slow-twist .22-250 and want something short and light. It's going in a Game Scout stock with a T3 action, and a 9" can.

my plan has been to give it a 16.5" Hardy CF barrel, and let the can live on there. For you adventurous types, what powder/bullet combos should I look at to get a decent burn in that barrel length?

Mainly want it to whack pigs, so I don't really want to shoot light bullets.


Edited by snarkscarbine (01/30/18 05:01 PM)

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#7059134 - 01/30/18 05:41 PM Re: Short-barreled 308 [Re: snarkscarbine]
ChadTRG42 Online   happy
THF Celebrity

Registered: 09/16/09
Posts: 12869
Loc: Lewisville, TX
What are you considering a light bullet? We have been running 125 grain SST in a 20" 308 AR-10 at 3022 fps, and it HAMMERS pigs and yotes.

Out of a 16.5" barrel, you'll want to pick up some speed to gain expansion with a lighter bullet, like a 150 grain or lighter. A 165-168 would work, just running a little slower.
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#7059246 - 01/30/18 07:08 PM Re: Short-barreled 308 [Re: snarkscarbine]
snarkscarbine Offline
Woodsman

Registered: 01/01/17
Posts: 209
Loc: DFW
You've done a lot more experimenting than I have, and 308 is a new caliber to me. Basically I just want something that'll transfer a good amount of energy and give me as much of a complete burn as I can get.

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#7059347 - 01/30/18 08:05 PM Re: Short-barreled 308 [Re: snarkscarbine]
scottfromdallas Online   content
Tracker

Registered: 06/23/15
Posts: 876
Loc: TX
I think a 16.5" barrel will give you a petty good burn. I would look powders in the H335, A2230, TAC, H4895 burn rate. You should be able to get 2600-2700 with 150 grain bullets. I've had great experience the last 2 years with 150 Ballistic Tips. I'm sure any 150 bullet would work well but a 150 plastic tipped bullet like a NBT, SST, Accubond will give you more reliable expansion at extended ranges. I wouldn't be concerned about blow ups at close range from a shorter barreled 308 with any 150 hunting bullet.


Edited by scottfromdallas (01/30/18 08:07 PM)
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#7060176 - 01/31/18 11:20 AM Re: Short-barreled 308 [Re: ChadTRG42]
Korean Redneck Online   content


Registered: 06/24/09
Posts: 2533
Loc: Houston
Originally Posted By: ChadTRG42
What are you considering a light bullet? We have been running 125 grain SST in a 20" 308 AR-10 at 3022 fps, and it HAMMERS pigs and yotes


I've seen u say often as the "bullet guy" here (my personal designation for u) that u should "pick a bullet and then build a rifle."

1. What barrel do u have on this? Twist and brand would be nice to know.
2. What was the rationale here?

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#7060181 - 01/31/18 11:26 AM Re: Short-barreled 308 [Re: snarkscarbine]
FiremanJG Offline
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Registered: 12/16/08
Posts: 24859
Loc: Wolfe City, TX
Originally Posted By: snarkscarbine
You've done a lot more experimenting than I have, and 308 is a new caliber to me. Basically I just want something that'll transfer a good amount of energy and give me as much of a complete burn as I can get.


Sierra 155 gr TMK, IMR-8208

Works great in my 16" plus can. It has killed hogs from 20 yards to 480 yards, to date.
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#7060200 - 01/31/18 11:40 AM Re: Short-barreled 308 [Re: Korean Redneck]
ChadTRG42 Online   happy
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Registered: 09/16/09
Posts: 12869
Loc: Lewisville, TX
Originally Posted By: Korean Redneck
Originally Posted By: ChadTRG42
What are you considering a light bullet? We have been running 125 grain SST in a 20" 308 AR-10 at 3022 fps, and it HAMMERS pigs and yotes


I've seen u say often as the "bullet guy" here (my personal designation for u) that u should "pick a bullet and then build a rifle."

1. What barrel do u have on this? Twist and brand would be nice to know.
2. What was the rationale here?


The AR-10 is actually a good hunting buddy's of mine that I hunt and shoot with. We wanted something to night hunt pigs and yotes with a fast round with some good weight. I helped him out with loads and building the right load for it. I'm not sure of the barrel brand, but he put it together. I'm pretty sure it's a 1:10" twist. The rationale was to have, what we call, "Thermal Explosions"!! We wanted rabbits and yotes to have big splashes of thermal carnage on video when hit with a fast round. And it doesn't disappoint!
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#7060596 - 01/31/18 03:38 PM Re: Short-barreled 308 [Re: ChadTRG42]
Cleric Offline
Veteran Tracker

Registered: 03/11/12
Posts: 3247
Originally Posted By: ChadTRG42
What are you considering a light bullet? We have been running 125 grain SST in a 20" 308 AR-10 at 3022 fps, and it HAMMERS pigs and yotes.

Out of a 16.5" barrel, you'll want to pick up some speed to gain expansion with a lighter bullet, like a 150 grain or lighter. A 165-168 would work, just running a little slower.


The only bullet over 160that looks interesting to me is the 168 ablr. That bc doesn’t look right...

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#7060728 - 01/31/18 04:49 PM Re: Short-barreled 308 [Re: snarkscarbine]
ChadTRG42 Online   happy
THF Celebrity

Registered: 09/16/09
Posts: 12869
Loc: Lewisville, TX
^^^ Yes, the BC's that Nosler lists on their site are not reliable at all. They have changed (lowered) their BC's several times since the LRAB have come out, and I don't even use their listed BC's for being to high. You can EASILY manipulate a G1 BC to make it very appealing, by how they calculate their BC's. But the real world Nosler BC data is much lower.

https://www.nosler.com/accubond-long-range-bullet/

For example, take the Sierra G1 BC numbers. Look at this standard 175 Sierra MatchKing. They list the G1 BC with the velocity test results they got at that velocity. It shows how the faster you push a bullet, the higher the G1 BC is. Now, Sierra's numbers are a little high also, compared to actual acoustic and field testing with the Litz numbers with the same bullet. But Nosler bases their BC data at stupid high speeds, where real world cartridges do not shoot that fast. Nosler lists these crazy high BC numbers, and probably with a little extra on top. This is why I recommend using a G7 BC. A G7 BC is a BC that is less dependent on velocity. Meaning, the faster or slower you push it, the less variation the actual BC has. Yes, there is some variation due to speed, but not near as much as a G1 is. So, use a G7 BC when running your trajectory data. And not all listed BC's are equal.

https://www.sierrabullets.com/store/product.cfm/sn/2275/308-dia-175-gr-HPBT

.505 @ 2800 fps and above
.496 between 2800 and 1800 fps
.485 @ 1800 fps and below
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Custom and Precision Ammunition!!
www.DallasReloads.com
Type 01 and Type 06 FFL

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#7060846 - 01/31/18 06:11 PM Re: Short-barreled 308 [Re: ChadTRG42]
Cleric Offline
Veteran Tracker

Registered: 03/11/12
Posts: 3247
Originally Posted By: ChadTRG42
^^^ Yes, the BC's that Nosler lists on their site are not reliable at all. They have changed (lowered) their BC's several times since the LRAB have come out, and I don't even use their listed BC's for being to high. You can EASILY manipulate a G1 BC to make it very appealing, by how they calculate their BC's. But the real world Nosler BC data is much lower.

https://www.nosler.com/accubond-long-range-bullet/

For example, take the Sierra G1 BC numbers. Look at this standard 175 Sierra MatchKing. They list the G1 BC with the velocity test results they got at that velocity. It shows how the faster you push a bullet, the higher the G1 BC is. Now, Sierra's numbers are a little high also, compared to actual acoustic and field testing with the Litz numbers with the same bullet. But Nosler bases their BC data at stupid high speeds, where real world cartridges do not shoot that fast. Nosler lists these crazy high BC numbers, and probably with a little extra on top. This is why I recommend using a G7 BC. A G7 BC is a BC that is less dependent on velocity. Meaning, the faster or slower you push it, the less variation the actual BC has. Yes, there is some variation due to speed, but not near as much as a G1 is. So, use a G7 BC when running your trajectory data. And not all listed BC's are equal.

https://www.sierrabullets.com/store/product.cfm/sn/2275/308-dia-175-gr-HPBT

.505 @ 2800 fps and above
.496 between 2800 and 1800 fps
.485 @ 1800 fps and below


Color me shocked that a company would manipulate numbers to show better performance

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#7084836 - 02/19/18 12:14 PM Re: Short-barreled 308 [Re: FiremanJG]
watchale Online   content
Pro Tracker

Registered: 02/18/10
Posts: 1963
Loc: Tx
Originally Posted By: FiremanJG
Originally Posted By: snarkscarbine
You've done a lot more experimenting than I have, and 308 is a new caliber to me. Basically I just want something that'll transfer a good amount of energy and give me as much of a complete burn as I can get.


Sierra 155 gr TMK, IMR-8208

Works great in my 16" plus can. It has killed hogs from 20 yards to 480 yards, to date.


Sweet. This is what I'm wanting to do with a .308 barreled action I just bought. Was looking at 155s and a short barrel.
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#7084896 - 02/19/18 01:18 PM Re: Short-barreled 308 [Re: snarkscarbine]
Cleric Offline
Veteran Tracker

Registered: 03/11/12
Posts: 3247
I am going to see how hard I can push the 168s.

I also like ablr because their min velocity for expansion is good

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#7085296 - 02/19/18 07:00 PM Re: Short-barreled 308 [Re: Cleric]
watchale Online   content
Pro Tracker

Registered: 02/18/10
Posts: 1963
Loc: Tx
Originally Posted By: Cleric
I am going to see how hard I can push the 168s.

I also like ablr because their min velocity for expansion is good


You already have a short barreled .308? Just talked to DSS and about to make mine happen.
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#7085360 - 02/19/18 07:51 PM Re: Short-barreled 308 [Re: snarkscarbine]
Cleric Offline
Veteran Tracker

Registered: 03/11/12
Posts: 3247
Is Dss Morgan?


Mine is coming factory at 16in

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#7085907 - 02/20/18 09:39 AM Re: Short-barreled 308 [Re: snarkscarbine]
watchale Online   content
Pro Tracker

Registered: 02/18/10
Posts: 1963
Loc: Tx
Yes sir it is. Hes going to chop, crown, and thread it cool rifle
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