June 28, 2018, 03:00 PM | #26 |
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I called Alliant and talked to one of their powder engineers--learned quite a bit actually, very helpful and informative. One big misconception I had corrected right away--as a powder degrades it can in fact become more volatile. Something else--any solvent or source of ammonia in the proximity of reloading powders is bad news--if it leeches into the powder. For example--powder use or storage in the same room where rifles are worked and cleaned--big no-no. I ahem, cough, cough have been doing that for years.
He gave me 4 different tests for measuring the efficacy of the powder--and I can report the RL22 I used passed all of them with flying colors. Time to look elsewhere for the fly in the ointment.
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June 28, 2018, 03:23 PM | #27 |
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thanks for that 7mag!
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June 28, 2018, 03:35 PM | #28 |
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Might I inquire as to the source of your load data?
Alliant shows a max load of RL-22 under 115gr SP at 52.0gr
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June 28, 2018, 03:45 PM | #29 | |
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I did just check my Lee flyer and it does say 52 max for RL22. Hmmm..I wonder what the discrepancies are attributable to? Anyway, I'm already going to pull all the ssts and replace the powder with something else.
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June 28, 2018, 04:55 PM | #30 | |
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Generally speaking, I prefer the manufacturer data if it's available. I also trust QuickLoad, but only after it's calibrated to my gun (and components) and the particular powder batch I'm using. Anywho, RL-22 is probably not a bad choice, seems maybe a little slow... possibly RL-19 would be better, just off the top of my head. I could be wrong, happened once back in the 90s. Just bump those starting loads accordingly (about 47gr) and try again.
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June 28, 2018, 05:37 PM | #31 | |
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Anywho--I agree the RL22 is probably better with bigger capacity burns--so I'm tabling it for now--I have a very good selection of other powders to try so while I'm interested to figure this out--I'm not too interested on being on the pressure bleeding edge. FYI--the fella at Alliant says the last time they had a significant difference in batch to batch manufacturer of the same powder was back in the 70's or 80's. He said otherwise the date and location of manufacture makes almost no difference and any variation would be very slight (at least with the RL22).
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June 30, 2018, 01:44 PM | #32 |
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Setting aside the RL22 issue for now--decided to try my "old reliable" IMR 4831 and it did not disappoint. I shot some 120 gr gamekings at 200 yds, mostly out of curousity since I was really out to test a multi-thousand dollar AR build shooting ultrahigh BC vld bullets.
The lowly axis with it's budget 3 x 9 weaver scope totally blew away my exotic 224 valkyrie build which sports a nikon 6 x 24 FFP scope. Even at 8.5 lbs I'm a bit surprised at the kick of this gun--also heats up veery fast--my guess it's a barrel-burner.
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June 30, 2018, 07:59 PM | #33 |
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Yeah, people don't talk about it much but 25-06 is overbore.
Heck i'm using RL26 in the 257 Roberts with 120gr. Sierra HPBT GameKings. With the case capacity you should be fine with RL22. Don't forget to tune the action on that Axis. Could possibly half your groups.
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June 30, 2018, 08:14 PM | #34 | |
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Overbore--yup--way up there near the top of the list as a matter of fact.: )
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July 1, 2018, 08:01 AM | #35 |
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Yeah, as i said earlier, i'd try getting a new bolt head.
Don't forget the bolt for the Axis is different than the standard model 10,12,16. Maybe that's the issue?? Model 10 bolt in the Axis? Alliant's "reloading manual" only shows max load. I do compare loads from the manuals with QL. Surprising how many show as 65-72k psi. Hence why we start at starting loads. You ought to try the 115gr. Berger VLD Hunting. High BC's ald will definitely get the job done on deer sized game. Just need to be seated out long. My Savages, and Ruger77 like em 0.005" off the lands.
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July 1, 2018, 08:08 AM | #36 |
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I do check my loads with QL--that's how I arrived at 51K +/- for the load that I had done. Somewhere along the way there has been a "disconnect" in data vs actual performance (unless the rifle's configuration is somehow causing this, which I doubt). I've seen this a couple times before for other cartridges (hornady's manual also contains a "over-pressure" recipe for 10mm)--like you say that's why we start low.
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