Quick Load 250 ack imp

[RW]

I am definitely going to get Quick load but have to wait a little while but I would like to have some one with it to run the 250 sav. ackley imp with the 80 grain TTXS barnes It would be greatly appreciated, Ron

 

[Chuckhunter]

I am definitely going to get Quick load but have to wait a little while but I would like to have some one with it to run the 250 sav. ackley imp with the 80 grain TTXS barnes It would be greatly appreciated, Ron

Is there a particular powder you want to use, or a specific velocity you would like to achieve? Also, what is your barrel length?

 

[RW]

I am open to most any powder choices that would give good accuracy and velocity. I know that is pretty vague, I have quite a few powders to choose from Imr, Hogdon, norma. I have only loaded for the 243 win in the lighter bullets and had very good results with H414 just have to be careful be cause of temp can cause pressure to get high! My barrel length on this gun is 27" or 271/2" long I will probably cut it back to 24" at some time. If the formula is correct I would think this cartridge should get 3200fps as P.O. said this was the most improved of all the cartridges he worked with. Thank You for taking the time to help, Ron

 

[Chuckhunter]

I am open to most any powder choices that would give good accuracy and velocity. I know that is pretty vague, I have quite a few powders to choose from Imr, Hogdon, norma. I have only loaded for the 243 win in the lighter bullets and had very good results with H414 just have to be careful be cause of temp can cause pressure to get high! My barrel length on this gun is 27" or 271/2" long I will probably cut it back to 24" at some time. If the formula is correct I would think this cartridge should get 3200fps as P.O. said this was the most improved of all the cartridges he worked with. Thank You for taking the time to help, Ron

From the criteria you supplied me with QL shows 37.2 Gr's of VV N-135, 3246fps, (46,186 psi) chamber pressure. 39.8Gr's of VV N-150, 3208 fps, (44,798 psi) chamber pressure. And 44.2 Gr's of RL-17, 3467 fps., (49,639 psi) chamber pressure. These numbers were arrived at using the QL defaults of 70" temp, .50 weighting factor, (52,997 psi Max. pressure) and a COAL of 2.515 with 80Gr Barnes TTSX and your given barrel length of 27". As always these are still estimations but should give you a good place to start. These three powders and their respective charge weights appear to give the best combination of filling up the case, good velocity and efficiency. Good luck and as always be safe.

 

[Brians356]

Paul Box at Sierra swears by RE-15 in 250 Ackley nearly across the board. But another 250 AI shooter around here says RE-17 is even better. Your bullet choice may favor one over the other. Behind 87-gr TNT I have superb results with AA 2520, but I've got some RE-15 to try next.
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[RW]

Thank You very much for taking the time to provide the input on this! Ron

 

[JRS]

What is the rate of twist in your barrel? Which IMR, Hodgdon and Norma powders do you have on hand?

 

[RW]

VV N560 Hodgon, varget, 414-win760, H4350,4841sc,4831,Retumbo,H1000
RL15,171022,25
IMR 43504831,4895,4064,4198,4895
Norma MRP, N204
And I have access to all the Hogdon and IMR Powders
Barrel 1in10 twist 27 1/2" long, Thank you , Ron

 

[Tommie]

I'm just glad people are keeping the 250AI alive. Such a polite chambering!

 

[RW]

I'm just glad people are keeping the 250AI alive. Such a polite chambering!

I started reading P.O. Ackleys books a very very long time ago and I thought all cartridges should be of this desighn and low and behold the 6mm accuracy rounds are a variation of this technology {steeper shoulder and a little less body taper}If they would have made all the bullets that the 6mm ans 6.5mm available they would have had a lot more of a following! Ron

 

[Brians356]

I started reading P.O. Ackleys books a very very long time ago and I thought all cartridges should be of this desighn and low and behold the 6mm accuracy rounds are a variation of this technology {steeper shoulder and a little less body taper}If they would have made all the bullets that the 6mm ans 6.5mm available they would have had a lot more of a following! Ron

The "revolutionary" 6.5 Creedmore is essentially a 6.5-250 AI. That's not a stretch, as the CM's parent 30 T/C was itself an improved 300 Savage. I can take a fired 6.5 CM case, run it into my Redding 250 AI full length die, load it, and shoot it.
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[RW]

Than You, that's very interesting! How would the Lapua brass perform with the small primer using the small primer and slow powders and ball primers where people use the magnum primers? The only brass that I know of is Hornday and lapua, Ron

 

[Brians356]

I personally would not make 250 AI cases from Creedmoor! I only pointed out how similar the two are, and that it can be done. I don't much care for the cavernous extractor groove of the CM case.

Much better to use the true parent of the 250 AI, 250 Savage. But, lacking availability, the plentiful 22-250 (available in premium form) makes a superb 250 AI, either by necking up with a mandrel then leaving a false shoulder, or fire forming "bulletless" in the 250 AI chamber (how I do it).
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[Brians356]

I'm just glad people are keeping the 250AI alive. Such a polite chambering!

Imagine the overachiever 6.5 Creedmoor necked down to 25 caliber. Would that really be a "polite" cartridge? Methinks not.
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[Zero333]

Cartridge : .250 Ack Imp (250 Savage)
Bullet : .257, 80, Barnes 'TTSX'BT 25731
Useable Case Capaci: 48.310 grain H2O = 3.137 cm³
Cartridge O.A.L. L6: 2.710 inch = 68.83 mm
Barrel Length : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 52500 psi, or 361 MPa
or a maximum loading ratio or filling of 108 %
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 !

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
ReloadSwiss RS 60 101.1 47.2 3.06 3487 99.1 52500 10733 1.018 ! Near Maximum !
Alliant Reloder-17 100.3 46.9 3.04 3467 98.4 52500 10561 1.022 ! Near Maximum !
Elcho 17 100.3 46.9 3.04 3467 98.4 52500 10561 1.022 ! Near Maximum !
Somchem S365 108.0 47.8 3.10 3453 99.3 52102 10241 1.031 ! Near Maximum !
ReloadSwiss RS 70 103.7 49.2 3.19 3431 95.2 52500 10645 1.023 ! Near Maximum !
ReloadSwiss RS 62 103.1 48.1 3.12 3428 96.8 52500 10324 1.037 ! Near Maximum !
Norma URP 104.8 46.2 2.99 3403 96.4 52500 10112 1.034 ! Near Maximum !
Bofors RP19 ~approximation 104.9 46.2 2.99 3403 96.4 52500 10108 1.034 ! Near Maximum !
Accurate 4350 104.6 46.6 3.02 3402 96.4 52500 10167 1.049 ! Near Maximum !
PB Clermont PCL 511 101.7 48.2 3.12 3398 94.2 52500 10243 1.031 ! Near Maximum !
Ramshot Hunter 105.0 48.3 3.13 3396 94.2 52500 10226 1.032 ! Near Maximum !
Vihtavuori N550 101.6 46.2 2.99 3396 96.2 52500 10174 1.042 ! Near Maximum !
ReloadSwiss RS 52 96.6 44.4 2.88 3395 98.0 52500 9865 1.036 ! Near Maximum !
Hodgdon H414 99.3 46.8 3.03 3393 93.2 52500 10178 1.033 ! Near Maximum !
Winchester 760 99.3 46.8 3.03 3393 93.2 52500 10178 1.033 ! Near Maximum !
SNPE Vectan SP 11 97.6 44.9 2.91 3392 97.7 52500 9873 1.034 ! Near Maximum !
Hodgdon CFE223 89.2 44.3 2.87 3391 98.2 52500 9807 1.034 ! Near Maximum !
IMR 3031 94.5 39.3 2.55 3386 100.0 52500 9050 1.039 ! Near Maximum !
Ramshot Big Game 94.5 44.8 2.91 3386 97.6 52500 9780 1.034 ! Near Maximum !
IMR 4895 93.8 41.8 2.71 3381 97.8 52500 9826 1.045 ! Near Maximum !
Hodgdon Hybrid 100V 107.7 46.4 3.01 3378 98.2 52500 9562 1.030 ! Near Maximum !
Winchester 748 87.1 41.8 2.71 3377 99.4 52500 9438 1.038 ! Near Maximum !
Hodgdon BL-C2 89.6 43.5 2.82 3368 98.8 52500 9650 1.048 ! Near Maximum !
Norma 203B 95.1 42.3 2.74 3367 97.8 52500 9700 1.046 ! Near Maximum !
Bofors RP3 96.9 43.6 2.83 3366 98.6 52500 9672 1.057 ! Near Maximum !
Norma 203 old 96.9 43.6 2.83 3366 98.6 52500 9672 1.057 ! Near Maximum !
Bofors RP11 ~approximation 94.6 42.1 2.73 3365 97.3 52500 9718 1.045 ! Near Maximum !
Alliant Reloder-15 94.6 42.1 2.73 3365 97.3 52500 9718 1.045 ! Near Maximum !
Raufoss RA11 94.6 42.1 2.73 3365 97.3 52500 9718 1.045 ! Near Maximum !
Rottweil R903 99.1 43.7 2.83 3358 98.4 52500 9581 1.057 ! Near Maximum !
Hodgdon H4895 91.0 40.5 2.63 3355 98.2 52500 9521 1.046 ! Near Maximum !
IMR 4320 96.6 42.3 2.74 3353 97.6 52500 9396 1.028 ! Near Maximum !
Accurate 4064 96.6 42.1 2.73 3352 100.0 52500 9249 1.078 ! Near Maximum !
Lovex D073.6 91.8 42.1 2.73 3350 99.7 52500 9224 1.058 ! Near Maximum !
Accurate 2520 89.7 42.1 2.73 3350 99.7 52500 9224 1.058 ! Near Maximum !
ADI AR 2206H 91.4 40.7 2.64 3348 97.8 52500 9510 1.046 ! Near Maximum !
Ramshot Wild Boar 89.6 42.7 2.76 3348 97.7 52500 9503 1.042 ! Near Maximum !
Somchem S355 98.7 43.0 2.79 3346 98.2 52500 9515 1.053 ! Near Maximum !
Accurate 2495 91.0 39.7 2.57 3344 100.0 52500 8901 1.082 ! Near Maximum !
Alliant AR-Comp 89.8 38.7 2.51 3344 100.0 52500 8350 1.042 ! Near Maximum !
Bofors RP11 TZ ~approximation 89.3 38.7 2.51 3343 100.0 52500 8351 1.042 ! Near Maximum !
ADI AR 2209 108.0 47.8 3.10 3343 89.7 52198 9936 1.030 ! Near Maximum !
Hodgdon H380 96.0 43.7 2.83 3341 95.8 52500 9658 1.051 ! Near Maximum !
Raufoss RA4 106.8 47.6 3.08 3338 90.1 52500 9803 1.032 ! Near Maximum !
Bofors RP4 ~approximation 106.8 47.6 3.08 3338 90.1 52500 9803 1.032 ! Near Maximum !
Norma 204 103.5 47.6 3.08 3338 90.1 52500 9803 1.032 ! Near Maximum !
SNPE Vectan SP 9 92.0 42.3 2.74 3337 97.7 52500 9405 1.042 ! Near Maximum !
PB Clermont PCL 507 88.6 41.2 2.67 3337 98.8 52500 9269 1.043 ! Near Maximum !
Bofors RP4 NT ~approximation 104.6 47.3 3.06 3335 92.7 52500 9720 1.041 ! Near Maximum !
Somchem S321 87.0 41.7 2.70 3333 99.0 52500 9290 1.050 ! Near Maximum !
Hodgdon H322 87.7 37.9 2.46 3333 100.0 52500 8738 1.037 ! Near Maximum !
ADI AR 2219 82.5 37.9 2.46 3333 100.0 52500 8738 1.037 ! Near Maximum !
Vihtavuori N530 87.9 39.3 2.55 3332 98.9 52500 9189 1.041 ! Near Maximum !
Hodgdon H335 82.8 40.2 2.61 3331 99.9 52500 8960 1.043 ! Near Maximum !
SNPE Vectan SP 10 82.4 39.2 2.54 3329 99.9 52500 8938 1.045 ! Near Maximum !
PB Clermont PCL 516 92.3 43.8 2.84 3329 95.8 52500 9498 1.043 ! Near Maximum !
Nitrochemie A/S 0300 79.6 36.4 2.36 3329 100.0 52500 8429 1.043 ! Near Maximum !
Norma 202 91.9 40.2 2.61 3329 99.9 52500 8960 1.049 ! Near Maximum !
ReloadSwiss RS 50 94.2 43.6 2.83 3328 96.0 52500 9463 1.046 ! Near Maximum !
Lovex S062 95.5 41.4 2.68 3328 98.9 52500 9226 1.054 ! Near Maximum !
PB Clermont PCL 508 (PCL223) 82.3 39.2 2.54 3328 99.9 52500 8926 1.045 ! Near Maximum !
Vihtavuori N540 94.1 42.4 2.75 3324 99.9 52500 9039 1.048 ! Near Maximum !
Elcho TR140 - preliminary data 95.4 43.9 2.84 3323 96.0 52500 9411 1.047 ! Near Maximum !
Lovex S070 103.5 45.6 2.95 3321 93.4 52500 9635 1.054 ! Near Maximum !
Alliant Reloder-19 108.0 48.1 3.12 3320 89.7 50463 9956 1.050 ! Near Maximum !
IMR 8208 XBR 89.7 39.9 2.59 3320 98.8 52500 9076 1.042 ! Near Maximum !
Somchem S341 90.5 43.4 2.81 3319 97.6 52500 9186 1.043 ! Near Maximum !
Hodgdon VARGET 96.8 41.7 2.70 3318 97.0 52500 9272 1.037 ! Near Maximum !
ADI AR 2208 96.5 41.7 2.70 3318 97.0 52500 9272 1.037 ! Near Maximum !
ReloadSwiss RS 40 84.3 38.3 2.48 3317 99.9 52500 8767 1.043 ! Near Maximum !
Norma 201 92.4 40.3 2.61 3315 98.8 52500 9167 1.059 ! Near Maximum !
IMR 4064 97.6 41.0 2.66 3315 97.3 52500 9176 1.041 ! Near Maximum !
IMR 4831 108.0 46.1 2.98 3314 95.8 49155 9766 1.075 ! Near Maximum !
Vihtavuori N135 100.3 40.5 2.63 3311 100.0 52500 8447 1.053 ! Near Maximum !
Vihtavuori N150 104.0 43.7 2.83 3311 99.2 52500 9021 1.048 ! Near Maximum !
IMR 4350 104.1 46.1 2.99 3311 92.2 52500 9444 1.037 ! Near Maximum !
Hodgdon H4350 106.0 46.2 2.99 3311 92.1 52500 9447 1.038 ! Near Maximum !
Bofors RP7 NT ~approximation 97.3 43.7 2.83 3310 93.4 52500 9289 1.027 ! Near Maximum !
SNPE Vectan SP 7 90.4 43.2 2.80 3308 95.7 52500 9319 1.054 ! Near Maximum !
Accurate 2460 85.6 41.0 2.66 3305 99.3 52500 8952 1.065 ! Near Maximum !
Lovex D073.5 85.8 41.0 2.66 3305 99.3 52500 8952 1.065 ! Near Maximum !
Rottweil R902 94.2 40.5 2.62 3305 98.8 52500 9060 1.060 ! Near Maximum !
Lovex S065 101.9 44.4 2.88 3305 94.8 52500 9410 1.055 ! Near Maximum !
Norma MRP 108.0 50.2 3.25 3304 89.8 46360 10585 1.088 ! Near Maximum !
Ramshot TAC 89.3 42.9 2.78 3301 95.1 52500 9309 1.046 ! Near Maximum !
Vihtavuori N140 93.9 41.0 2.66 3301 100.0 52500 8617 1.047 ! Near Maximum !
Rottweil R901 90.3 38.2 2.48 3301 99.8 52500 8840 1.070 ! Near Maximum !
Bofors RP3 NT ~approximation 99.3 43.9 2.85 3299 94.7 52500 9194 1.036 ! Near Maximum !
Winchester Supreme 780 107.5 50.5 3.27 3296 89.9 52500 9492 1.035 ! Near Maximum !
Lovex D073.4 84.4 40.3 2.61 3295 99.3 52500 8821 1.059 ! Near Maximum !
Rottweil R904 107.3 47.1 3.05 3295 88.6 52500 9426 1.036 ! Near Maximum !
Accurate 2230 85.4 41.2 2.67 3295 98.4 52500 8943 1.056 ! Near Maximum !
Ramshot X-Terminator 87.0 41.3 2.68 3291 97.6 52500 9018 1.047 ! Near Maximum !
Alliant Reloder-12 87.5 39.7 2.57 3291 100.0 52500 8474 1.044 ! Near Maximum !
Alliant Reloder-10x 85.1 35.8 2.32 3289 100.0 52500 8200 1.054 ! Near Maximum !
ADI AR 2210 83.4 38.4 2.49 3289 99.3 52500 8737 1.043 ! Near Maximum !
SF033 fl, russ. 5,45x39 82.1 37.3 2.42 3287 100.0 52500 7989 1.062 ! Near Maximum !
Bofors RP2 NT ~approximation 90.9 40.2 2.60 3286 98.1 52500 8850 1.041 ! Near Maximum !
Bofors RP7 100.4 43.9 2.85 3286 92.2 52500 9331 1.052 ! Near Maximum !
Rottweil R907 100.4 43.9 2.85 3286 92.2 52500 9331 1.052 ! Near Maximum !
Bofors RP14 ~approximation 108.0 48.1 3.12 3286 89.2 49329 9788 1.062 ! Near Maximum !
IMR 4007 SSC 97.3 43.9 2.85 3285 92.2 52500 9324 1.052 ! Near Maximum !
Accurate 2200 80.9 36.6 2.37 3281 99.7 52500 8524 1.039 ! Near Maximum !
ADI BM2 81.5 38.7 2.51 3278 99.2 52500 8649 1.044 ! Near Maximum !
Hodgdon Benchmark 88.6 38.9 2.52 3277 99.2 52500 8660 1.044 ! Near Maximum !
Lovex S060 91.3 39.6 2.56 3274 97.8 52500 8784 1.042 ! Near Maximum !
Accurate 2015 87.7 37.4 2.42 3274 100.0 52500 8138 1.061 ! Near Maximum !
Somchem S385 108.0 48.6 3.15 3269 91.0 48900 9650 1.080 ! Near Maximum !
ADI AR 2206 90.6 39.9 2.59 3262 98.2 52500 8662 1.042 ! Near Maximum !
Norma 200 81.5 35.5 2.30 3262 100.0 52500 7995 1.070 ! Near Maximum !
IMR 7828 SSC 108.0 49.4 3.20 3256 85.1 47942 9948 1.072 ! Near Maximum !
Somchem S335 91.6 39.9 2.59 3253 100.0 52500 8260 1.059 ! Near Maximum !
Accurate 1680 74.1 34.4 2.23 3253 100.0 52500 7988 1.038 ! Near Maximum !
Bofors RP1 NT ~approximation 81.5 35.2 2.28 3252 100.0 52500 8079 1.031 ! Near Maximum !
IMR 4198 84.5 33.8 2.19 3250 100.0 52500 7645 1.032 ! Near Maximum !
Lovex D060 72.7 30.3 1.96 3247 100.0 52500 7804 1.034 ! Near Maximum !
Accurate 5744 71.1 30.3 1.96 3247 100.0 52500 7804 1.034 ! Near Maximum !
Vihtavuori N133 93.3 38.0 2.46 3247 100.0 52500 7869 1.045 ! Near Maximum !
Hodgdon H4198 82.0 34.3 2.22 3243 100.0 52500 7943 1.032 ! Near Maximum !
Somchem S361 106.0 50.3 3.26 3242 87.4 52500 9099 1.050 ! Near Maximum !
Vihtavuori N130 87.8 36.6 2.37 3233 100.0 52500 7752 1.051 ! Near Maximum !
Alliant Reloder-7 79.9 34.4 2.23 3233 100.0 52500 7707 1.054 ! Near Maximum !
ADI AR 2207 80.2 33.4 2.16 3232 100.0 52500 7547 1.052 ! Near Maximum !
Hodgdon H4831 SC 108.0 48.6 3.15 3230 85.5 49254 9364 1.064 ! Near Maximum !
Kazan Sunar 308W 83.7 36.5 2.36 3226 100.0 52500 7732 1.053 ! Near Maximum !
Winchester 296 62.8 30.0 1.95 3225 100.0 52500 7521 1.057 ! Near Maximum !
Accurate 2700 97.1 45.1 2.92 3224 91.9 52500 8754 1.057 ! Near Maximum !
ADI AR 2213 108.0 48.6 3.15 3220 84.5 47051 9718 1.081 ! Near Maximum !

 

[Zero333]

First column = Powder name
Second column = Case fill % ( 107% is still not a compressed load)
Third column = Max charge weight in GRAINS (that either generates 52,500 psi or 108% case fill, which ever is reached first)
Fourth = Max charge weight in GRAMS
Fifth = Velocity in FPS
Sixth = 100% of powder burned
Seventh = Chamber pressure in PSI
Eighth = Muzzle pressure in PSI
Ninth = Barrel time in ms (milliseconds)

 

[Brians356]

Fired 6.5 Creedmore case on the left, fired 250 AI case on right, after running both through a Redding 250 AI 40-deg full length die.

The CM neck needs to be trimmed, but it could be left longer than the Savage neck, depending on your chamber neck length. The CM shoulder will sharpen a bit when fired in the 250 AI. But QED I think on the similarity.


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[Brians356]

I've added a fired unsized 6.5 Creedmoor case on the left. Middle is 6.5 Creedmoor run through my 250 AI 40-deg FL die. Right is a 250 Savage AI run through the same die. Notice the 30-deg Creedmoor shoulder vs 40-deg AI. If my die was a 30-deg the only apparent effect of running CM through the die would be the 25-cal neck.


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