Duplicate Powders ?
- Thread starter mbogo3
- Start date
Ball C2 = Win 748
H 4350 = RL 17
H 4831 = RL 22
Although not necessarily identical, load data for these equivalents can be used to work up loads if one doesn't have data for one or the other. Start data will be safe for work up.
H 4350 = RL 17
H 4831 = RL 22
Although not necessarily identical, load data for these equivalents can be used to work up loads if one doesn't have data for one or the other. Start data will be safe for work up.
Actually, the burn rate of Reloder 19 and Reloder 22 is quite close......considerably closer than N204 is to Norma MRP.
mbogo7; N200 is closer to Reloder 7 than is N201, & N202 is somewhat slower than is Reloder12.
Dave.
mbogo7; N200 is closer to Reloder 7 than is N201, & N202 is somewhat slower than is Reloder12.
Dave.
Just some comments. For many years I have interchanged Norma 204 with IMR4350, same amounts for either. Main difference is N204 is more compact, meaning you can get another 2 or 3 grains more powder in a given case.
Norma 205, or the same powder marked Norma Magnum Rifle powder, was a perfect match for the war surplus powder I believe used in 20mm ammo, and finally named H4831.
This was the war surplus powder that Jack O'Connor designated as 60 grains being the "standard" load for the 270 with130 grain bullets. However, 60 grains filled the 270 right to the top of the neck, requiring terrific compression, even by gaining a bit with a drop tube, or tapping the case as it filled.
When Norma 205 came along, 60 grains went in a 270 case and filled to less than half way up the neck. With exact same loads, there was no difference in elevation at 500 yards, between either 4831 or N205.
However, when Hodgdon started to make canister H4831, it turned out that the same amount as the old war surplus, gave 100 fps less velocity to the 130 grain bullet than did the surplus powder.
Thus, there will be a bit of change in the match of new H4831.
Norma 205, or the same powder marked Norma Magnum Rifle powder, was a perfect match for the war surplus powder I believe used in 20mm ammo, and finally named H4831.
This was the war surplus powder that Jack O'Connor designated as 60 grains being the "standard" load for the 270 with130 grain bullets. However, 60 grains filled the 270 right to the top of the neck, requiring terrific compression, even by gaining a bit with a drop tube, or tapping the case as it filled.
When Norma 205 came along, 60 grains went in a 270 case and filled to less than half way up the neck. With exact same loads, there was no difference in elevation at 500 yards, between either 4831 or N205.
However, when Hodgdon started to make canister H4831, it turned out that the same amount as the old war surplus, gave 100 fps less velocity to the 130 grain bullet than did the surplus powder.
Thus, there will be a bit of change in the match of new H4831.
Bofors (Sweden)is the manufacturer of these powders. Other distributors put their name on it.
I believe Varget is ADI 2208 under another name.
BLC2 and H335 are the same recipe. If the powder comes out as a bit slow, it is Olin 846 (BLC2) If it comes out as a bit fast, it is labelled Olin 844 (H335). Older versions of this powder differed in calcium carbonite content (to reduce flame temp). The 846 powder came first and used a lot of CaO. This left a very hard blobs of fouling that was (is) very hard to get out of a barrel. The CaO content was reduced, and the new powder is 844.
HS6 and HS7 are both Olin shotgun powders. I think 540 and 571??
pete dobinson
CGN frequent flyer
- Location
- Courtenay BC.
Thats good to know, I haven't found much data on RL 17.
hunters home
CGN Regular
I've used N-217 in my 7mm Wea mag and loads are close to the data developed for Ramshot Magnum.
ruger-ruger
CGN Regular
This is one of the better burn rate charts.
http://www.lapua.com/upload/reloading/reloadingburningratechart2011.pdf
http://www.lapua.com/upload/reloading/reloadingburningratechart2011.pdf
There are a lot of medium burning rifle powders all very near alike. Such as Varget, 3031, 4320, Norma 203, 4064, 4895, reloader 15 and probably some more, especially some of the newer powders that I am not familiar with. Some powders interchange exactly, such as IMR 4350 and Norma 204, war surplus 4831 and Norma 205, or even 4064 and Norma 203.
Lab tests would likely show a bit of difference, but for practical use, I will go by my testing out to 500 yards with some of the equals that I couldn't detect a variation in the trajectory of everything the same, except the powder.
If I was going to load up the 6.5 Bumblebee and had a loading chart showing one of the numbers I have listed, which I didn't have that powder, but I did have another of the ones listed, I would simply use the one I had, by dropping back a bit on the first loads. Most likely it would be within one to three grains the same, but in keeping with my policy of safety first, I would drop back about 4 grains to try the first loads.
Lab tests would likely show a bit of difference, but for practical use, I will go by my testing out to 500 yards with some of the equals that I couldn't detect a variation in the trajectory of everything the same, except the powder.
If I was going to load up the 6.5 Bumblebee and had a loading chart showing one of the numbers I have listed, which I didn't have that powder, but I did have another of the ones listed, I would simply use the one I had, by dropping back a bit on the first loads. Most likely it would be within one to three grains the same, but in keeping with my policy of safety first, I would drop back about 4 grains to try the first loads.
