30-30 Ackley Improved
Need modern data for reloading 30-30 Ackley improved with 40 degee shoulder. I have Ackley's book but, was looking for loads using powder like Varget, H-4895 etc., or the percentage amount the capacity of the case is increased. Any help would be appreciated.-Thanks-SRL
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While I personally have a great deal of respect for P.O. Ackley as both a gunsmith and a wildcatter, it has been pretty well proven that many of the figures that he published were on the optimistic side. The increase in case volume of Ackley cases run about 7%-10%, however, that does not translate directly into a 7%-10% increase in velocity.
I also have Ackley's books and have used some of the reloading data found there. In my opinion some of that data is on the hot side and should definitely be cut back. As to reloading Ackley Improved cartridges with some of the newer powders,I can't help you.0 -
I second that last post. In the early '60s on the advice of Ackeley
I built a 22 Ackley Zipper Improved on a small Martini action.
This is a 22-30/30 having 22-250 ballistics. In my second letter I complained the chamber bulged from his standard loads. He replied the Cadet Martini chamber walls were too thin for that cartridge - thanks a lot for a bad guess from a real expert. I kept his letters.
Be careful with your experimentation.0 -
Gentlemen-Thanks for the information. I agree that Ackley's loads are a bit hot and optomistic. I'm not trying to make a 308 out of my 30-30 but just wanted a safe load for target practice and the small black tail deer we have out here in Washington state. I'm well aware that by the time I get pressure signs I might be way over maximum. If anyone else out there has any more info please let me know. Thanks-SRL 0 -
in loading for the ackley imporves i own i use the maximum charges in the loading manuals as starting loads for the coresponding ackley improved 0 -
must be a gunsmith issue. My 280AI and 6.5-06AI far outperform their parent calibers and seem to prefer HOT and even over max charges. Also,..ackleys data was using older (read pre-lawyer) powders as well as longer non-factory barrels for a large portion of the info.
When todays slower powders are used, and loaded to densities in the 90+% ranges,..these calibers are so close on the heals of the belted magnums,..with much longer throat life,..it is down right scary.
this info was copied from a members post over at another board who has typed in information I am assuming is from ackleys books,...
1. .25-35WCF 117gr. 2230fps 2800fps 25.6%
2. .30-40Krag 180gr. 2430fps 2900fps 19.3%
3. .250Savage 100gr. 2820fps 3300fps 17.0%
4. 6.5x55Swede 140gr. 2550fps 2900fps 13.7%
5. .30-30WCF 150gr. 2390fps 2700fps 12.9%
6. 7x57Mauser 145gr. 2660fps 3000fps 12.8%
7. .300H&H 180gr. 2880fps 3200fps 11.1%
8. .257Rbts 117gr. 2650fps 2900fps 9.4%
9. .270Win 150gr. 2850fps 3100fps 8.8%
10. .25-06Rem 100gr. 3230fps 3500fps 8.4%
11. .375H&H 300gr. 2530fps 2740fps 8.3%
12. .243Win 100gr. 2960fps 3200fps 8.1%
13. .270Win 130gr. 3060fps 3300fps 7.8%
14. .280Rem 140gr. 3000fps 3230fps 7.7%
15. .30-06Sprfld 180gr. 2700fps 2900fps 7.4%
16. .30-06Sprfld 150gr. 2910fps 3100fps 6.5%
17. .219Zipper 55gr. 3300fps 3500fps 6.0%
18.(T) 6mmRem 75gr. 3400fps 3600fps 5.9%
19.(T) .220Swft 50gr. 3870fps 4100fps 5.9%
20.(T) 7mm-08Rem 140gr. 2860fps 3030fps 5.9%
21. .375H&H 270gr. 2690fps 2830fps 5.2%
22. .22-250Rem 55gr. 3680fps 3850fps 4.6%
23.(T) .257Rbts+p 117gr. 2780fps 2900fps 4.3%
24.(T) .260Rem 140gr. 2760fps 2880fps 4.3%
25. 6mmRem 100gr. 3100fps 3200fps 3.2%
as far as loading up a faster load for your 30/30AI,..I would suggest this,....take the slowest powder listed in your manual,..and then find a burn rate chart of all the powders,...and start working with the next 2-3 slower powders that the last one listed in the manual. Start with the mid range charge of the last powder as the start load for the next slower powder and work up slowly. Slow powders don't blow up guns,...fast powders do!! Work up slowly,...you may find that into the 3rd or 4th slower powder,..you can't get enough in the case to find an accuracy load,..so then step one powder back,.and you should find the fastest accuracy load the caliber is capable of. This is typical with the ackleys,..I have even posted questions as to wether anyone could give me a "calculation" to determine how to choose slower powders,..and all that has been returned time and again is to work up the slowwer powders,..and see what happens. Fast powders are the ones you have to be careful of.
why chase the game when the bullet can get em from here?....
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