243 Win Load Data needed for 1 in 12 Twist

[LIUNA]

I just acquired a 243 Win and need some load info, bullet weight and powder recommendations, 1 in 12 twist with 22" Pac Nor barrel, I see load information all the time but without sharing the barrel twist the info is useless. thanks, this is a great site with a lot of great shooters.

 

[WyleWD]

May sound like an obscure question, but is this a varmint or sporter weight barrel you're shooting?? WD

 

[CPorter]

I have used up to 80 grain bullets with good success in my 12 twist with medium fast powders like IMR-4350. I had good results with IMR-4831 and the 70gr Nosler ballistic tip but the 80 gr with IMR-4350 shot better. Here are a bunch of options for the 80gr with a 26" Rem Varmint Taper 12 twist barrel.

Cartridge : .243 Win. Case cap 55.3 gr
Bullet : .243, 80, NOS BalTip 24080
Cartridge O.A.L. L6: 2.815 inch or 71.50 mm
Barrel Length : 26.0 inch or 660.4 mm

Predicted Data for Indicated Charges of the Following Powders.

Matching Barrel Time: 1.193 milliseconds

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 !

22 loads produced a Loading Ratio below user-defined minimum of 75%. These powders have been skipped.

Powder type Fill Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
Accurate No.2230 76.5 39.8 2.58 3207 100 53739 11138 1.193 ! Near Maximum !
Accurate No.2460 78.8 40.6 2.63 3223 100 54369 11341 1.193 ! Near Maximum !
Accurate No.2520 79.7 41.4 2.68 3252 100 54451 11641 1.193 ! Near Maximum !
Accurate No.2700 87 44.8 2.9 3181 97.7 53341 12180 1.192 ! Near Maximum !
Accurate XMR 2015 80.9 36.9 2.39 3163 100 53972 10131 1.193 ! Near Maximum !
Accurate XMR 2495 84.4 39.4 2.55 3261 100 56710 11187 1.193 ! Near Maximum !
Accurate XMR 4064 88.5 41.8 2.71 3276 100 56485 11704 1.193 ! Near Maximum !
Accurate XMR 4350 93.5 45.6 2.96 3326 99.9 54627 13560 1.192 ! Near Maximum !
ADI AP 2214 103.4 52.4 3.39 3265 95.1 50940 14791 1.193
ADI AR 2206 80.9 39.1 2.53 3155 100 51374 11044 1.193 ! Near Maximum !
ADI AR 2206H 80.2 39.1 2.54 3147 100 51216 11002 1.193 ! Near Maximum !
ADI AR 2208 82.8 40.6 2.63 3206 99.8 51265 12009 1.193 ! Near Maximum !
ADI AR 2209 93.1 46.7 3.02 3264 96.3 50689 13951 1.193
ADI AR 2213 96.6 49 3.17 3282 94.7 50560 14682 1.193
Alliant Reloder-12 78.1 38.9 2.52 3161 100 52302 10570 1.193 ! Near Maximum !
Alliant Reloder-15 84.2 41.1 2.66 3266 99.9 52582 12570 1.193 ! Near Maximum !
Alliant Reloder-19 98.1 47.4 3.07 3278 96.7 51632 14137 1.193 ! Near Maximum !
Alliant Reloder-22 100.8 49.8 3.22 3329 97 51971 15083 1.193 ! Near Maximum !
Alliant Reloder-25 106.2 51.6 3.34 3348 99.6 51184 15205 1.193 ! Near Maximum !
Hodgdon Benchmark 78.5 37.9 2.46 3160 100 51575 10794 1.193 ! Near Maximum !
Hodgdon BL-C2 78.7 41.8 2.71 3247 100 53291 12081 1.193 ! Near Maximum !
Hodgdon H1000 104.5 52.5 3.4 3262 95.1 50966 14753 1.193
Hodgdon H322 75.4 36.8 2.39 3188 100 51523 10725 1.193 ! Near Maximum !
Hodgdon H335 75.4 40 2.59 3213 100 52280 11435 1.193 ! Near Maximum !
Hodgdon H380 90.3 45.5 2.95 3271 97.6 53461 13555 1.192 ! Near Maximum !
Hodgdon H414 85.5 44.9 2.91 3243 95.8 52863 13364 1.192 ! Near Maximum !
Hodgdon H4350 93.3 46 2.98 3239 95.5 51058 13570 1.193
Hodgdon H4831 SC 99.2 50 3.24 3258 94.5 50817 14421 1.194
Hodgdon H4895 81 39.1 2.54 3147 100 51216 11002 1.193 ! Near Maximum !
Hodgdon Retumbo 109.3 53.7 3.48 3357 99.8 51358 15500 1.193 ! Near Maximum !
Hodgdon VARGET 81.4 40 2.59 3199 100 51249 11740 1.193 ! Near Maximum !
IMR 3031 81.6 38.1 2.47 3237 100 52534 11155 1.193 ! Near Maximum !
IMR 4064 83.8 40 2.59 3210 99.9 51733 11826 1.193 ! Near Maximum !
IMR 4320 82.4 40.9 2.65 3221 99.9 50897 12056 1.193
IMR 4350 91.8 44.3 2.87 3278 98.4 51551 13503 1.192 ! Near Maximum !
IMR 4831 95.8 46.6 3.02 3296 99.6 53602 13498 1.193 ! Near Maximum !
IMR 4895 82.8 39.6 2.56 3236 100 49751 11841 1.193
IMR 7828 102.3 49.4 3.2 3301 95 50688 14919 1.193
Lovex S-060 80.8 38.6 2.5 3171 100 51478 11069 1.193 ! Near Maximum !
Lovex S-070 97.3 46.7 3.03 3302 99.6 54396 13559 1.193 ! Near Maximum !
Norma 201 82.7 39.7 2.57 3230 100 53526 11639 1.193 ! Near Maximum !
Norma 202 82.1 39.4 2.56 3211 100 52974 11192 1.193 ! Near Maximum !
Norma 203 old 89.9 42.9 2.78 3281 100 54418 12452 1.193 ! Near Maximum !
Norma 203B 84.7 41.3 2.68 3266 100 52764 12491 1.193 ! Near Maximum !
Norma 204 93 46.4 3.01 3254 96.3 51608 13704 1.193 ! Near Maximum !
Norma MRP 100 50.4 3.27 3363 98.3 51840 15524 1.193 ! Near Maximum !
PB Clermont PCL 507 78.8 40.2 2.6 3222 100 52111 11729 1.193 ! Near Maximum !
PB Clermont PCL 516 82.3 42.8 2.77 3236 99.5 52236 12593 1.193 ! Near Maximum !
Ramshot BigGame 88.6 43.5 2.82 3273 100 52262 12838 1.192 ! Near Maximum !
Ramshot Hunter 90.2 46.9 3.04 3294 98.9 52149 13932 1.193 ! Near Maximum !
Ramshot TAC 78.3 40.1 2.6 3221 100 52126 11700 1.193 ! Near Maximum !
Rottweil R901 79.9 37.9 2.46 3219 100 54197 11097 1.193 ! Near Maximum !
Rottweil R902 83.1 39.9 2.59 3227 100 53593 11601 1.193 ! Near Maximum !
Rottweil R903 89.9 42.9 2.78 3280 100 54351 12477 1.193 ! Near Maximum !
Rottweil R904 94.8 46.3 3 3226 95.3 51853 13361 1.193 ! Near Maximum !
Rottweil R905 101.2 49.4 3.2 3296 95 52027 14734 1.193 ! Near Maximum !
Rottweil R907 85 43.3 2.8 3231 97.8 52793 12847 1.193 ! Near Maximum !
SNPE Vectan SP 11 86.4 43.6 2.82 3272 100 52295 12826 1.192 ! Near Maximum !
SNPE Vectan Sp 7 84.4 44.1 2.86 3260 100 53222 12636 1.193 ! Near Maximum !
SNPE Vectan SP 9 81.9 41.3 2.68 3230 100 52130 12133 1.193 ! Near Maximum !
Somchem S321 78.6 40.9 2.65 3229 100 52929 11808 1.193 ! Near Maximum !
Somchem S335 82.8 39.5 2.56 3151 100 53661 10406 1.193 ! Near Maximum !
Somchem S341 81.5 42.4 2.75 3218 100 52497 11935 1.193 ! Near Maximum !
Somchem S365 95.4 46.3 3 3321 100 52796 13151 1.192 ! Near Maximum !
Somchem S385 98.1 48.7 3.15 3281 98.1 53846 13851 1.193 ! Near Maximum !
Vihtavuori N130 76.3 36 2.33 3109 100 52755 9622 1.193 ! Near Maximum !
Vihtavuori N133 79.9 37.3 2.42 3116 100 52348 9787 1.193 ! Near Maximum !
Vihtavuori N135 85.2 39.8 2.58 3190 100 53924 10600 1.193 ! Near Maximum !
Vihtavuori N140 84 40.2 2.61 3179 100 52872 10813 1.193 ! Near Maximum !
Vihtavuori N150 88.5 42.8 2.77 3229 100 53584 11426 1.193 ! Near Maximum !
Vihtavuori N160 98.5 48 3.11 3209 95.4 52340 13182 1.193 ! Near Maximum !
Vihtavuori N165 102.2 49.9 3.23 3242 97.6 52907 13513 1.193 ! Near Maximum !
Vihtavuori N540 83.4 42.5 2.75 3192 100 52774 11828 1.193 ! Near Maximum !
Vihtavuori N550 88.5 45.1 2.92 3300 99.7 53139 13559 1.192 ! Near Maximum !
Vihtavuori N560 98.2 50 3.24 3335 94.8 51510 15476 1.193 ! Near Maximum !
Winchester 748 77.1 40.5 2.62 3245 100 52129 11828 1.193 ! Near Maximum !
Winchester 760 88.2 45.4 2.94 3295 98.2 52209 13845 1.193 ! Near Maximum !
Winchester WXR 99.7 50 3.24 3327 96.9 52061 15101 1.193 ! Near Maximum !

 

[LIUNA]

The Barrel is Sporter Weight.

 

[WyleWD]

My only experience with a 1-12 twist was with a 24" barrel in the 243. My findings were that powders in the R-15, WW 748, and Varget burn rate over Rem 9 1/2 primers gave me the best overall accuracy with that twist rate and barrel length. So if you have some powder(s) like that it's where I'd start along with 60-70gr bullets. And the 70gr Nosler ballistic tip would be the first one I'd try. Consult your reloading manual for starting and max loads of course. Good luck and let us know how it turns out. WD

 

[LIUNA]

Thanks to everyone that contributed to this information, you have been very helpful, I knew I could count on you.
Thanks, Bob

 

[CanusLatransSnpr]

I have a .243 Win with a 1-12 twist barrel. Its a 26" McGowen barrel on a Savage 12 action. Heres some of my loads that shoot well.

Fed Brass
70gr Speer TNT
WLR primer
46.0 gr H414 "max load in Hodgdon book so work up to"
Consistent .3 MOA @ 100yds

Fed Brass
65gr Hornady Vmax
WLR primer
45.3 gr H414 "mild load"
Consistent .4 MOA @ 100yds

Fed Brass
87gr Hornady Vmax
WLR primer
42.9 gr H4350 "near max load"
Consisten .4-.5 MOA @ 200yds.

Mike

 

[LIUNA]

Thanks for all your imput, this is a great site, with a lot of great people.
Thank,s Bob

 

[roninflag]

what are you shooting at? targets? range? generally the 55 to 90 grainers will work best.

 

[LIUNA]

Coyote's is my plan, but I need to bed the stock to get what I want out of this rifle.
Thanks, Bob

 

[MrMajestic]

Give the Berger 66 gr. HBCFB and Varget a try. My 14tw .243AI loves them.