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#19352987 04/02/24
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I recently bought a pound of this to try in my 308. Thinking if it would work in the 308 it might be a choice in the 243 and 7MM-08 as there based on the same case. I found no data for the 243 or 7MM-08 for this powder on the Hodgdon web site. Am I stuck with this just for the 308?

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Originally Posted by GSPfan
I recently bought a pound of this to try in my 308. Thinking if it would work in the 308 it might be a choice in the 243 and 7MM-08 as there based on the same case. I found no data for the 243 or 7MM-08 for this powder on the Hodgdon web site. Am I stuck with this just for the 308?
It's great with heavy .223's.

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Barnes shows the powder in 243

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TAC may be a little too fast for the 7-08,but it should work in the 243.Hodgdon shows Varget data on their reloading data for the 243.I use exactly one grain less TAC than what I load Varget in my 308 Win using 150-168gr bullets.So you might drop down a couple of grains of TAC and use Varget data to get you close and work up a little from there.


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Originally Posted by baldhunter
TAC may be a little too fast for the 7-08,but it should work in the 243.Hodgdon shows Varget data on their reloading data for the 243.I use exactly one grain less TAC than what I load Varget in my 308 Win using 150-168gr bullets.So you might drop down a couple of grains of TAC and use Varget data to get you close and work up a little from there.


Case fill isn't going to be that great with TAC.

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Originally Posted by GSPfan
I recently bought a pound of this to try in my 308. Thinking if it would work in the 308 it might be a choice in the 243 and 7MM-08 as there based on the same case. I found no data for the 243 or 7MM-08 for this powder on the Hodgdon web site. Am I stuck with this just for the 308?


Are you forgetting about the effect that bore size relative to case capacity has on powder burn rate selection?

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TAC is so good in the 308 that you won't want to burn it in anything else.


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I love TAC in the .308. It's a bit fast for the 7mm08 and .243 but might work with lighter bullets.

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Originally Posted by GSPfan
I recently bought a pound of this to try in my 308. Thinking if it would work in the 308 it might be a choice in the 243 and 7MM-08 as there based on the same case. I found no data for the 243 or 7MM-08 for this powder on the Hodgdon web site. Am I stuck with this just for the 308?

You don’t own a .223?

At current prices, it’s probably a good idea to peruse the loading manuals before plunking down the bucks, but though I haven’t tried it as yet, TAC looks useful for the .308 for light to mid-weights, 6.5 Grendel, even .30/30. You only bought a pound, about 150 rounds worth. The .223 with 50s is almost a standard…


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TAC would be suitable in the 7mm-08 with 120s. A super popular load around the 'Fire for a long time was a 120 Ballistic Tip or TTSX over Varget or Reloader 15, and TAC is fairly comparable to those powders.
TAC should also work fine in 243 with lighter bullets where similar burn rate powders would be suitable.

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My 223 hasn't seen a bullet other than a 55 grain V-Max. It's a Cooper varmint rifle and I only use it shooting prairie dogs. I'll be using either 150 or 165 grain bullets in the 308 depending on which group better. Typically my 7MM-08's see 140 grainers which I have the most of. In the 243 I'm trying the 95 grain Hornady SST as well as 100 grain Partitions.

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You’re obviously not looking very hard. Fugg Hodgdon data. Google Fu Western Powder reloading guide online. A bunch of .308 TAC data.


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Originally Posted by WAM
You’re obviously not looking very hard. Fugg Hodgdon data. Google Fu Western Powder reloading guide online. A bunch of .308 TAC data.
Which I think is exactly what he is saying.

The way I comprehend it is he is unsure about the .243 and 7mm-08.

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Anything that works well in the .223 is usually great in a .458 Win Mag or Lott. TAC is very good in the .458 Win. Similar to H335 in results. Check Barnes #4. I've used a lot of H335 in .45-70s and .458 Wins. Top results for heavier bullets.

So TAC isn't limited to .308s and ilk.

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Might mention that TAC started out as a military powder, designed for use in the 5.56x45 and 7.62x51 NATO rounds--which as most of us know eventually were also introduced as the commercial rounds named the .223 Remington and .308 Winchester. Both rounds tend to work well with the same powders--but TAC also works well in several rounds with pretty similar capacity/bore ratios--though bullet weight also has an effect.

I keep a running list of the powders most-used in the handloads for our rifles, mostly to keep an adequate supply on hand. Here are the cartridge/bullet combinations where TAC has proven to work the best in terms of both high velocity and smaller groups, in our rifles:

.204 Ruger, 24 to 40-grain bullets
.223 Remington, 50-55 grain bullets
.308 Winchester, 130-150 grain bullets
.358 Winchester, 200-225 grain bullets
9.3 Barsness-Sisk wildcat, 250-286 grain bullets

But will also add that TAC is well worth trying in any cartridge/bullet combo where powders such as IMR4895, etc. tend to work.


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Originally Posted by okie john
TAC is so good in the 308 that you won't want to burn it in anything else.


Okie John
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I found some Quick Load Data posted on another site.It did show TAC used in the .243.It wouldn't be my choice,but would be usable with probably lighterweight bullets.
Cartridge : .243 Win.
Bullet : .243, 85, Barnes 'TSX' BT 24341
Useable Case Capaci: 49.467 grain H2O = 3.212 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 20.0 inch = 508.0 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 60000 psi, or 413 MPa
or a maximum loading ratio or filling of 115 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

52 loads produced a Loading Ratio below user-defined minimum of 80%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Alliant Reloder-25 111.7 50.7 3.28 3179 99.4 60000 14280 0.981
Norma MRP 103.7 49.4 3.20 3178 97.8 60000 14598 0.988
Vihtavuori N570 114.6 55.1 3.57 3174 89.5 60000 15436 0.986
Norma MRP 2 114.3 52.1 3.38 3164 95.6 60000 14688 0.991
Alliant Reloder-17 93.2 44.6 2.89 3160 100.0 60000 13343 0.983
Vihtavuori N560 105.4 49.1 3.18 3159 94.2 60000 14582 0.985
Alliant Reloder-33 114.6 57.4 3.72 3147 89.9 60000 15138 0.988
IMR 7828 109.8 48.7 3.15 3145 94.6 60000 14176 0.976
IMR 7828 SSC 103.9 48.7 3.15 3145 94.6 60000 14176 0.976
Alliant Reloder-22 105.7 48.7 3.16 3144 96.4 60000 14215 0.989
Winchester WXR 108.5 48.9 3.17 3141 96.2 60000 14205 0.990
Accurate MAGPRO 105.6 51.2 3.32 3138 92.4 60000 14486 0.992
Ramshot Magnum 105.2 52.2 3.38 3113 97.1 60000 13603 0.984
Ramshot Hunter 97.8 46.1 2.98 3111 98.5 60000 13405 0.991
Hodgdon H414 92.4 44.6 2.89 3110 97.8 60000 13440 0.991
Winchester 760 92.4 44.6 2.89 3110 97.8 60000 13440 0.991
Alliant Reloder-19 102.3 46.6 3.02 3105 96.2 60000 13555 0.985
Norma URP 97.4 43.9 2.85 3103 99.5 60000 13062 0.994
Hodgdon H1000 114.0 51.4 3.33 3103 94.6 60000 13705 0.976
Vihtavuori N550 94.6 44.1 2.86 3100 99.4 60000 13160 0.999
Accurate 4350 96.7 44.1 2.86 3097 99.5 60000 13084 1.012
IMR 4895 87.9 40.1 2.60 3089 99.9 60000 12624 0.995
Hodgdon CFE223 83.2 42.3 2.74 3087 100.0 60000 12505 0.991
Ramshot Big Game 88.1 42.8 2.77 3085 99.9 60000 12544 0.991
Norma 204 97.0 45.7 2.96 3084 95.9 60000 13214 0.984
IMR 4831 102.2 44.6 2.89 3083 99.6 60000 12801 1.003
Alliant Reloder-15 88.7 40.5 2.62 3080 99.8 60000 12568 0.995
Norma 203B 89.1 40.6 2.63 3077 99.9 60000 12469 0.997
Hodgdon Hybrid 100V 100.0 44.1 2.86 3073 100.0 60000 12162 0.992
Hodgdon H4831 107.6 47.7 3.09 3072 93.8 60000 13164 0.982
Hodgdon H4831 SC 103.4 47.7 3.09 3072 93.8 60000 13164 0.982
Winchester 748 81.5 40.0 2.59 3069 100.0 60000 11914 0.991
Hodgdon H4895 85.7 39.1 2.53 3069 100.0 60000 12233 0.992
IMR 4320 90.7 40.7 2.64 3068 99.9 60000 12140 0.980
Hodgdon BL-C2 83.7 41.7 2.70 3066 100.0 60000 12230 1.001
Hodgdon H380 90.0 41.9 2.72 3065 99.3 60000 12616 1.000
Norma 203 old 90.3 41.6 2.70 3063 100.0 60000 12256 1.011
Ramshot Wild Boar 84.3 41.1 2.66 3063 99.9 60000 12255 0.991
Accurate 3100 105.7 48.2 3.12 3059 98.5 60000 12861 1.017
Hodgdon Retumbo 115.0 52.7 3.42 3057 96.7 53534 14427 1.035 ! Near Maximum !
IMR 3031 88.1 37.5 2.43 3055 100.0 60000 11386 0.996
Hodgdon H4350 99.6 44.4 2.88 3054 97.2 60000 12647 0.987
IMR 4350 97.8 44.4 2.87 3054 97.3 60000 12634 0.987
Winchester Supreme 780 100.7 48.4 3.14 3053 96.0 60000 12819 0.990
Vihtavuori N165 107.7 48.6 3.15 3051 96.8 60000 12704 0.994
Vihtavuori N530 82.9 38.0 2.46 3049 100.0 60000 11760 0.987
Hodgdon VARGET 91.5 40.4 2.62 3048 99.7 60000 12091 0.983
IMR 4064 92.1 39.7 2.57 3044 99.8 60000 11944 0.987
Ramshot TAC 84.5 41.5 2.69 3043 98.9 60000 12309 0.989
IMR 8208 XBR 84.7 38.6 2.50 3039 100.0 60000 11641 0.987
IMR 4007 SSC 91.8 42.5 2.75 3039 97.2 60000 12513 0.995
Accurate 2520 83.6 40.2 2.61 3039 100.0 60000 11576 1.011
Norma 201 87.1 38.9 2.52 3032 100.0 60000 11712 1.003
Vihtavuori N160 107.6 47.1 3.05 3031 94.7 60000 12548 0.989
Accurate 4064 89.7 40.0 2.59 3030 100.0 60000 11541 1.029
Hodgdon H322 82.7 36.6 2.37 3027 100.0 60000 11076 0.985
Norma 202 86.4 38.7 2.51 3025 100.0 60000 11301 0.998
Ramshot X-Terminator 82.4 40.1 2.60 3024 99.9 60000 11725 0.990
Vihtavuori N540 88.5 40.8 2.64 3017 100.0 60000 11369 0.999
Accurate 2230 80.4 39.7 2.57 3017 100.0 60000 11490 1.001
Vihtavuori N150 97.5 42.0 2.72 3016 100.0 60000 11416 1.000
Accurate 2460 80.3 39.4 2.55 3014 100.0 60000 11343 1.010
Accurate 2495 84.5 37.7 2.44 3014 100.0 60000 11156 1.032
Hodgdon Benchmark 84.3 37.9 2.45 3004 100.0 60000 11120 0.985
Alliant AR-Comp 83.6 36.9 2.39


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Well I don't have a 458 but I do have a 358 Winchester so I'll try it in that as well. Other possible applications might be the 405 Win.

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Originally Posted by GSPfan
Well I don't have a 458 but I do have a 358 Winchester so I'll try it in that as well. Other possible applications might be the 405 Win.

TAC is an excellent powder in the 358 Win. use magnum primers to get a great load.....the little heaver spark in a magnum primer makes a big difference....

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