Reloading Data

In this section you'll find anything related to reloading data, be it our Norma Reloading Manual, burning rate chart or how to store your powder. But first of all, we want to start with a warning! Handloading can be dangerous and it's important to us that you don't hurt yourself or others. Please read the next chapter carefully before continuing!
Norma cartridges and bullets with measuring instrument

Warning! Reloading metallic centerfire cartridges can be dangerous!

Careless or incorrect handloading procedures can result in serious personal injury. Handloading should only be done after thorough and complete instruction. Since individual handloading procedures, operations and safety practices are beyond our control, we disclaim all liability for any damages which may result.

Reloading any cartridge requires a familiarity with safe, conservative reloading practices. When combined with personal discipline and attention to detail, such practices can help create a margin of safety for both the reloader and the shooter.

1. Never begin loading with the maximum powder charge shown in these reloading data tables, regardless of your experience.
2. Never exceed maximum loads because excessive chamber pressure will result.
3. Discontinue firing at the first sign of excessive pressure or upon noticing a change in the report of the firearm.

Lot-to-lot variations, design changes, or specification changes that are beyond our control may affect components mentioned in this book. To safely use this or any other guide or manual, you must keep yourself well informed on the technical progress of reloading. It is our belief that the information offered will result in safe operation if the proper equipment and components are employed in a reasonable manner.

Because Norma Precision AB has no control over the actual components selected, the manner in which the components are‚ÄĎassembled, or the condition or quality of firearms used, no responsibility, either expressed or implied is assumed for the use of this guide or for any other Norma product. In no event shall Norma Precision AB be liable for any damages resulting from the use of this book, whether in contract, tort or otherwise, including consequential damages.

 

POWDER STORAGE

To maintain the product quality for as long as possible, you have to keep the powder in a suitable place under suitable conditions. Where possible, store the powder at a constant temperature, ideally between 12 and 15°C, and a relative humidity of 40–50%. If the air is too dry, it will dry out the powder, which will cause the pressure to be higher, thus affecting performance. Also make sure that you close the powder container properly afterwards.

Cartridges should be stored under the same ambient conditions to maintain their quality.

 

BURNING RATE CHART

When comparing different burning rate charts, one will notice variations in listed propellant ordering. Still, each such chart tells "the truth". Ranking differences result from use of different criteria. For example, a certain powder type can act slightly quicker than some other powder type, when used in 308 Winchester loads; however, when these powders are used in 7x64 loads, evident burning rates might reverse. Relative burning rate charts can never provide absolute data because too many factors are involved in how propellants burn within a cartridge chamber.

Eurenco Bofors produced the following chart, which we have published in our Norma Reloading Manual. Their ballisticians tested the same powder charge (43.2 grains) using the same bullet (143-grain FMJ) loaded in the 308 Winchester - they used IMR 4350 performance as a reference. This chart may not be any more accurate than any other but, compared to most, it does give significantly more information about how the relative burning rates were derived and it does relate to at least one real-world situation.

Any such data chart should be used ONLY as an INFORMATION GUIDE. Always refer to published data when reloading.

Powder

Relative Velocity

Relative Pressure

Vihtavuori, N 350 197,6 949,8
Vihtavuori, N 105 187,1 675,3
Rottweil P 806 179,5 630,4
Accurate, XMP 5744 145,8 607,2
Accurate, 1680 142,8 605,2
Hodgdon, 4198 178,8 454,5
Winchester, 296 166,7 449,4
Hodgdon, H 4227 161,5 414,2
IMR, 4227 163,1 405,2
Winchester, 680 154,3 399,2
Vihtavuori, N120 152,4 351,3
Vihtavuori, N 125 145,5 293,7
IMR, 4198 142,9 265,4
Alliant, Re 7  143,0 257,1
Rottweil, R 901 138,7 232,0
Norma, 200 137,4 230,4
Alliant, 10X 137,7 214,6
Accurate, XMR 2015 129,0 203,6
Hodgdon, H 322 131,9 202,9
Vihtavuori, N 130 131,8 195,2
Vihtavuori, N 133 130,6 185,1
Vihtavuori, N 530 130,0 174,5
Accurate, 2230 128,9 173,8
Hodgdon, H 4895 127,5 173,6
IMR, 3031 129,7 171,2
Norma, 201 127,0 171,0
Rottweil, R 902 126,6 170,0
IMR, 4320 125,3 163,0
Vihtavuori, N 135 126,5 160,6
Vihtavuori, N 140 125,5 157,3
IMR, 4895 123,5 153,3
Hodgdon, H 335 125,2 151,7
IMR, 4064 122,8 148,3
Accurate, 2460 125,1 146,9
Alliant, Re 12 122,1 144,5
Rottweil, R 907 115,0 137,9
Vihtavuori, N 540 119,3 137,5
Norma, 202 120,6 136,2
Hodgdon, BL-C2 120,0 133,8
Alliant, Re 15 120,0 133,7
Norma, 203B 119,9 133,6
Winchester, 748 118,5 127,4
Raufoss, NC96M 109,7 127,3
Rottweil, R 903 114,5 122,0
Accurate, 2520 118,6 119,6
Vihtavuori, N 150 115,7 118,0
Winchester, 760 110,4 116,3
Vihtavuori, N 550 111,2 112,6
Hodgdon, H 380 112,0 112,0
Hodgdon, H 414 111,3 110,9
Vihtavuori, N 160 102,1 107,5
Norma, URP 106,5 106,4
IMR, 4350 100,0 100,0
Rottweil, R 904 101,0 99,1
Norma, 204 100,9 98,9
Hodgdon, 4350 100,0 94,9
IMR, 4831 98,3 93,2
Accurate, 3100 90,1 92,0
Allitan, Re 19 94,8 90,7
Rottweil, R 905 92,9 89,9
Accurate, XMR 4350 94,2 84,4
Vihtavuori, N 560 91,1 83,2
Alliant, Re 22 90,2 81,1
Norma, MRP 89,9 80,1
IMR, 7828 84,3 77,5
Hodgdon, H 4831 91,1 77,3
Alliant, Re 25 83,1 71,8
Vihtavuori, N 165 83,7 69,3
Norma, 217 76,0 65,2
Vihtavuori, N 170 74,8 38,7

 

NORMA'S RELOADING MANUAL

This second edition of Normas reloading manual is available in an English version and is an update of our first manual that was published in 2004.

With this book we wish to share our knowledge and experience from over 110 years of manufacturing Norma-cartridges and components. In the book you will find a historic presentation of all the calibers as well as facts and information about our components, ballistics and reloading. The book offers you data for somewhere around 2000 loads in over 80 calibers and is oriented towards both reloaders and hunters.

To buy a copy please contact your nearest reseller.

Norma-Reloading-Handbook.png

Reloading Manual
Prod nr 66040112

 

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