Is there a particular powder you want to use, or a specific velocity you would like to achieve? Also, what is your barrel length?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
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.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
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! RonI'm just glad people are keeping the 250AI alive. Such a polite chambering!
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.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
Imagine the overachiever 6.5 Creedmoor necked down to 25 caliber. Would that really be a "polite" cartridge? Methinks not.I'm just glad people are keeping the 250AI alive. Such a polite chambering!