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Old March 3, 2012, 02:24 PM   #26
Paul B.
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"IMR 4831 was Jack O'Connor's favorite load -- worked then, works now."

I know, somebody already commented on this. Actually jack's powder was the milsurp H4831. When supplies of that ran out Hodgeden had it duplicated by an outfit, IIRC, in Australia. I'm not sure if it is still made there or stateside now or even someplace else. (Please God, not China.)
There is another powder, and I hate to mention it because Winchester dropped it at least ten years ago, but Winchester Magnum Rifle powder (WMR) makes the .270 sing. I prefer the 150 gr. bullet in my .270 andI use that WMR with the 150 gr. Sierra Game King for a velocity of 2930 to 2950 FPS. For the record, my .270 has a 24" barrel which IMHO is as it should be. That same powder delivers the same veocity range in my .300 Win. Mag. with the 200 gr. Speer Hot-Core. Winchester had said when they were making WMR that it was designed expressly for the .270 and .300 Win. mag. Both loads are sub-MOA aand I do like that powder in my .280 Rem. as well. Dunno the reason for "Big W" dropping it but I have a decent supply so I'll be good for some time yet.
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Old October 21, 2017, 04:47 PM   #27
odette
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Win 785 without a doubt. Unfortunately they stopped making it years ago and I am on my last can. Will hang up the rifle once I shoot the last of it, as it likes no other powder. At 200yds it puts 5 shots in hole hole from a bench with 140gr
Hornady BTSP
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Old October 21, 2017, 06:37 PM   #28
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First I would get a Hornady or a Sierra as they both list a wide range of powders.

They also list comparable bullets if you don't have the mfg data.

Then go down the list of the powder and cross check off the ones you have.

If there is a match, good. If not you can do some research and see.

If none, they decide on a new powder.

H or I or AA 4350 is a good choice to start with for 270 if you don't have an existing powder.

No guaranteed, but it usually gives good to very good results in 270.
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Old October 21, 2017, 07:50 PM   #29
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I have a cache of old Nosler Solid Base 150gr. bullets. They shoot very well when propelled by H4350. Another favorite for it is 150gr. Sierra GKs on top of RL22.
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Old October 21, 2017, 10:21 PM   #30
Pathfinder45
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Lots of good suggestions here. It seems that we live in powder-rich times at the moment, in spite of the shortages of not-so-long-ago. IMR-4831 should work well with both 130 and 150 grain bullets. Do not confuse it with H-4831 which is a quite different powder and their loading data is not interchageable.
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Old October 21, 2017, 10:32 PM   #31
Troy800
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I use H4831 H4831SC. I always try to start out with this powder. I its a good powder and very temprature stable and normally carried at your supply store.
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Old October 21, 2017, 10:57 PM   #32
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It is great being able to update something I contributed to five years ago.


I ran a test with IMR 4831 in my 270 Win. This is a very popular powder in this caliber. It turns out to be the velocity champ in this rifle. As usual, I lubricated my cases prior to shooting. This breaks the friction between chamber and bolt and applies the full thrust of the case to the bolt. Normally I detect maximum loads by having either a stiff bolt lift, blown or leaking primers. Lubing the cases removes parasitic friction between case and chamber, forcing the system to fully load the bolt. This removes false indications of low pressure by an easy bolt lift, which will happen when the case carries some of the load. Well, that is what normally happens. Here, I did not feel a stiff bolt lift even though I pushed 130 grain bullets to 3200 fps. I also did not experience any blown primers or leaking primers. However, on reloading these cases, I found a few with loose pockets, which is a positive indication of too much pressure, and so, in the future, I am going to keep any IMR 4831 velocities to 3000 fps or less.


Code:
FN Deluxe 24" Barrel new Wolff 22 pound mainspring
								
130 gr Federal Fusion (pulled)  57.0 grs IMR 4831 lot 022414 W-W Super, Fed210S, OAL 3.30"   hornady sizing lubed cases	 			                                             
2 Sep 2014 T =  92 °F 							
								
Ave Vel =2959			 				
Std Dev 26			 				
ES =	65			 				
High =3005			 				
Low =2940			 				
N =	5							
								
130 gr Federal Fusion (pulled)  58.0 grs IMR 4831 lot 022414 W-W Super, Fed210S, OAL 3.30 
			hornady sizing lubed cases	 			                                             
2 Sep 2014 T =  92 °F 							
								
Ave Vel =3041			 				
Std Dev =23			 				
ES =	63			 				
High =3067			 				
Low =3004			 				
N =	5							
								
								
130 gr Federal Fusion (pulled)  59.0 grs IMR 4831 lot 022414 W-W Super, Fed210S, OAL 3.30 
			hornady sizing lubed cases	 			                                             
2 Sep 2014 T =  92 °F 							
								
Ave Vel =3126							
Std Dev =16							
ES =	43							
High =3149							
Low =3106							
N =	5		 					
								
slight primer cupping around firing pin, probable primer pocket expansion, over max load	
								
130 gr Federal Fusion (pulled)  60.0 grs IMR 4831 lot 022414 W-W Super, Fed210S, OAL 3.30 
			hornady sizing lubed cases	 			                                             
2 Sep 2014 T =  93 °F 							
								
Ave Vel =3215			 				
Std Dev =18			 				
ES =	48			 				
High =3240			 				
Low =3192			 				
N =	5		 					
								
slight primer cupping around firing pin, probable primer pocket expansion, over max load
This rifle preferred surplus WC852 with a 130 grain, but the accuracy is not spectacular. That is a 7.7" group at 300 yards, which is acceptable.



I do believe that greasing bullets reduces jacket fouling. They shoot fine this way.



This barrel prefers 150 grain bullets. This is a ten shot group of 7.3" diameter, yes it is low in the target, but that can be corrected with an elevation adjustment.



I recently tried IMR 4831 in the 6.5 Swede. That powder also gave higher velocities than IMR 4350 and the accuracy was quite good. I am going to explore more with this powder, but it seems to be a real champ in the sub 30 caliber rounds.



I fired about 100 rounds, maybe more out of this barrel, I got the barrel quite hot. I also greased all my bullets/rounds. The cases had enough lube that I was able to size the things this week without applying any more lubricant. Upon cleaning the rifle I examined the muzzle and there was absolutely no traces of jacket fouling at the end of the barrel. I don't have a bore scope to verify that jacket fouling was reduced or eliminated from the inside, but, it seems to be working.



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Last edited by Slamfire; October 21, 2017 at 11:02 PM.
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Old October 21, 2017, 11:21 PM   #33
Tex S
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THIS LOAD IS AT MAX!!! Use with caution!!!!

I’m using 61.5gr of RL17 under a 95gr Barnes TTSX out of a 22” Browning A-Bolt. This produces 3650 FPS and is insanely deadly on TX whitetail. Minimal meat damage too.

I tried all of the “go to” powders, but the RL17 was far and away the most accurate.
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Old October 23, 2017, 05:35 AM   #34
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Well I have an update to an old thread also....
1. IMR 4451, 130 grn Btip from Nosler.
2. N160 and 140 Nosler partitions.
3. Magpro and 150 grn ABLR's, and 150 grn Btip
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Old October 23, 2017, 02:02 PM   #35
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270 is a little over bore, so anything slower than IMR4350.
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Old October 23, 2017, 04:59 PM   #36
TXJohn
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I use to use the 4350s and 4831S but now loading with R-22 with very good results.
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Old October 23, 2017, 05:38 PM   #37
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IMR 4350 provided excellent accuracy in my .270 (years ago.) I used only 130 gr. spitzer bullets in my .270. I haven't shot the rifle or hunted for several years.

Edited to add: I took my best Mule Deer, a 5 x 5 scoring 163, at 400+ yards with my .270 using IMR 4350.

2nd Edit: I aimed about 6 inches above the shoulder and the bullet went through the heart - about a 20 inch drop, more or less. My guide had recommended aiming at the top of the shoulder because he thought I had a 7mm Rem Mag.
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Old October 23, 2017, 06:17 PM   #38
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IMR 4831 and a 130 Accubond clocks 3019 from my 22" barreled Tikka T3 Lite. Groups are consistently sub MOA. Most accurate factory rifle I've ever shot.
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Old October 23, 2017, 06:50 PM   #39
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Carjunkie try IMR 4451, my 03a3 avg 3115 with 130 grn btips.
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Old October 25, 2017, 09:50 AM   #40
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IMR4350 and 130 gr Sierra Game Kings. Big medicine out to 300 yds
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Old October 27, 2017, 01:28 AM   #41
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My Marlin XL7 likes Alliant Power Pro 4000-MR with Nosler 130 gr Ballistic Tips, chronographs over 3,050 fps out of the 22" barrel with sub MOA accuracy at 100 yards. It has also performed well with Reloder 17 and H-414.
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Old October 27, 2017, 02:25 AM   #42
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There are so many good powders to choose from. Funny thing I've noticed is that the very best powders that I have used in my 270, are powders that have been discontinued: Norma N-205 is just awesome. Winchester WMR is super good with 140 grain bullets. Fortunately, I haven't run out of these two yet.
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Old October 27, 2017, 02:48 AM   #43
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When this thread began back in 2012,folks listed a lot of fairly quick(IMO) powders for a.270. Varget,H-380,etc.

Given the 270 is a necked down 30-06,and given H-4350 or IMR 4350 are some pretty top performers in the 30-06,I'd take that as a burn rate clue.

Going to Hogdon's site,a number of powders gave 3000+ fps with the 130 gr bullet.These powders ...frankly many are newer and I have not used them,but the 4350/4831 range of the burn chart performs very well.

Its not that mid burn range powders like Varget and 4895 and H-380 cannot be used..and you might get great accuracy,but the velocities will be down some.

Its also good to know when using quicker powders in (slightly) overbore cartridges,when you do find your max load,pressure increases are likely to to spike more quickly.

Last edited by HiBC; October 27, 2017 at 03:01 AM.
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Old October 27, 2017, 08:43 AM   #44
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Varget should work Ok. The burn rate is similar to IMR4064, and that was my 270 powder of choice when I used a Browning BAR for deer. Good accuracy too. After that, and a move to bolt guns, I used IMR 4831 for a time and then went to H4831 and then to H4831sc. There are plenty of powders to use, per the Lyman book, but IMR and H 4831 are about as good as it gets behind a 130 gr bullet. No need to reinvent the wheel.
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Old October 31, 2017, 10:40 AM   #45
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Quote:
H1000 was a bust.
This has been my experience as well. Can't get it to shoot well in any cartridge I've loaded.
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Old October 31, 2017, 12:57 PM   #46
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My go to powder for all cartridges based on the .30-03/.30-06 cartridges is IMR 4064.
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