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Post by olsmokey on Mar 11, 2009 14:38:39 GMT -5
I see on the burn rate chart that IMR4227 has almost the same burn rate as IMR4759. Because it is such a fine granual powder is it not suitable for the ML-II? I would think it would pack under the sabot better.
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Post by fowlplay on Mar 11, 2009 18:41:07 GMT -5
IMR 4227 is a old recommended powder for the ML-II. Some shooter were having problems with ignition with 4227 especially with loose sabots. Not being dependable for some is why it is not a popular choice for the Savage. 4759 is the better choice for dependability.
Steve
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Post by youp50 on Mar 11, 2009 19:38:59 GMT -5
A couple of things to think about. www.chuckhawks.com/powder_burn_rate.htmApril 2009 Guns and Ammo article by Patrick Sweeney. In a nutshell Mr Sweeney recalls the actions leading up to firearm damage by using the wrong powder. 4227 has failed to fire for most that have used it, self included. I am fortunate that it did not fail to ignite when I had a 'Booner' in my sights. |
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Post by walt cowan on Mar 11, 2009 19:55:47 GMT -5
i still have haft of can i got to shoot up. as said before, lose sabots and low temps will give misfires. another problem was bullets under 300 grains sometimes failed to light. soon as i shoot the last haft, i'm looking for something else.
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Post by tar12 on Mar 12, 2009 7:13:53 GMT -5
Any powder will fail with a loose fitting combo.Early on(module era) ill fitting modules were the cause of a lot of mis-fires.A few(very few) shoot it with no problems.A recessed plug and a tight fitting combo and you may see a resurgence in the use of this powder.
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Post by olsmokey on Mar 12, 2009 9:18:07 GMT -5
I've got a couple lbs. of 4227 laying around I'd like to use up, so might try some at practice. How much are you loading under 300gr bullets? thanks Dave
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Post by walt cowan on Mar 12, 2009 11:39:15 GMT -5
47 grains, 300grain xtp, win. 209. as soon as i can get some 300 grainers in cast i'm gona try 4227 again. might be a cheap plinking load.
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Post by Chris Champion on Mar 12, 2009 11:45:31 GMT -5
My uncle shoots 4227 in a 10ML-II, (post module, pre-accutrigger model). He shoots 300g XTP with MMP short sabots. He's never had a mis-fire issue. I'm not sure what his charge weight is. Of course he's had his gun for about 4 or 5 years and has yet to shoot up his first pound of powder.
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esmd
8 Pointer
Bill Drain
Posts: 109
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Post by esmd on Mar 14, 2009 12:16:19 GMT -5
Any powder will fail with a loose fitting combo.Early on(module era) ill fitting modules were the cause of a lot of mis-fires.A few(very few) shoot it with no problems.A recessed plug and a tight fitting combo and you may see a resurgence in the use of this powder. A lot of the guys I hunt with that have Savages have been using it for a number of years, and swear by it. They all use tight fitting bullet/sabot combos, and it does shoot accurately in their guns. I'm not sure on speed, but it's fast enough for them. They all think I'm nuts for using something other than 4227. |
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Post by 4wayhunter on Mar 15, 2009 11:00:12 GMT -5
I shoot it and swear by it. 4227 is fast enough and accurate.
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Post by dannoboone on Mar 15, 2009 15:26:38 GMT -5
i still have haft of can i got to shoot up. as said before, lose sabots and low temps will give misfires. another problem was bullets under 300 grains sometimes failed to light. soon as i shoot the last haft, i'm looking for something else. It works great in the .45 Long Colt! ;D |
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Post by rbinar on Mar 15, 2009 23:13:03 GMT -5
8-)For those who want to shoot Imr-4227 you either have to have a heavy bullet with a tight sabot or face the possibility of misfires.
Some rifles of course will provide this naturally and shoot it fine. However if you've ever had it fail (and I have) you know the sad feeling it conveys.
Using a recessed breech plug will go a long way to ensure it never misfires but if you want to shoot lighter bullets or don't care to have the tightest sabot another method will work.
If you add 3 grains of Imr-SR4756 (not 4759) to the bottom of you load it will go off every time no matter the bullet or sabot fit. If your are not trying to max out the pressure the small amount of starter will have very little effect on system pressure and won't start sabot disruption. If you are trying to shoot the absolute maximum speed with this powder you may have to back off about 5 grains of 4227 to add the 3 grains of 4756. Any shot shell powder similar to 4756 (like HS-7) will also work.
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Post by screwbolts on Mar 16, 2009 5:41:24 GMT -5
47 grains, 300grain xtp, win. 209. as soon as i can get some 300 grainers in cast i'm gona try 4227 again. might be a cheap plinking load. IMHO if your 300 grainers are of the LBT Hard cast design, you will also have a superior Hunting load. ;D ;D I actually use my 260 grain cast smooth sided boolit that I cut the mold for for plinking/hunting also. I have not had as good accuracy with any bullet with lube groves. Ken |
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Post by chuck41 on Mar 16, 2009 7:26:03 GMT -5
I tried 4227 when I first got my Savage. It worked really great . . . . . . . when it worked. I tended to use lighter bullets with the maximum being 250gr and I got a lot of misfires with the standard breachplug, and none that I remember with the RB modified breachplug that is a recessed design. I went to using five grains of 4759 under the rest of the load of 4227 and that worked fine with no misfires. These loads appeared to be a wee bit more accurate for me, but I did not shoot enough of it to be certain of that and the difference was very slight. (Like 1/4" better at 100yd cutting best groups from 1 1/2" to 1 1/4") The only reason I continued to use it (at the range only, not for hunting) was I had a huge stock of it that was purchased for another purpose. Based on my experience, I certainly would never buy a pound of it to use in a Savage 50.
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