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WARNING

The information displayed on this site, including ballistic data, was derived from tightly controlled laboratory conditions. This information and data may vary considerably depending on many factors, including the components used, component assembly, the type of firearm used, reloading techniques, safety precautions practiced, etc.

Never mix any two powders regardless of type, brand, or source. Never substitute any smokeless powder for Black Powder or any Black Powder substitute.

Hodgdon® Powder, IMR® Powder and Winchester® Powder expressly disclaim any and all warranties with respect to any and all products sold or distributed by them, the safety or suitability thereof, or the results obtained including, without limitation, any implied warranty of merchantability or fitness for a particular purpose and/or any other warranty. Buyers and users assume all risk, responsibility and liability whatsoever for any and all injuries (including death), losses or damages to persons or property (including consequential damages), arising from the use of any product or data, whether or not occasioned by seller’s negligence or based on strict liability or principles of indemnity or contribution. Hodgdon®, IMR® and Winchester® powders neither assume nor authorize any person to assume for it any liability in connection with the use of any product or data.

The individual accessing this site assumes the risk of safe loading practices. Failure to do so could result in severe personal injury (or death) and/or property damage.

USE THIS DATA WITH HODGDON®, IMR® AND WINCHESTER® BRAND POWDERS ONLY.

For all brands of powders use only the components shown. If the reloader makes any changes in components or gets new lot numbers, he should begin again with the starting loads and work up to maximum cautiously.

For those loads listed where a starting load is not shown, start 10% below the suggested maximum load and then approach maximums carefully, watching for any sign of pressure (difficult extraction, cratered and flattened or blown primers, and unusual recoil). H110 and Winchester 296 loads should not be reduced more than 3%.

Reduce H110 and Winchester 296 loads 3% and work up from there. H110 and Winchester 296 if reduced too much will cause inconsistent ignition. In some cases it will lodge a bullet in the barrel, causing a hazardous situation (Barrel Obstruction). This may cause severe personal injury or death to users or bystanders. DO NOT REDUCE H110 LOADS BY MORE THAN 3%.

40 S&W: This data is intended for use in firearms with barrels that fully support the cartridge in the chamber. Use of this data in firearms that do not fully support the cartridge may result in bulged cases, ruptured cases, case-head separation or other condition that may result in damage to the firearm and/or result in injury or death of the shooter and/or bystanders.

45 Colt: This data is intended for original Colt revolvers and their replicas. Max pressure, 14,000 CUP.

45 Colt (Ruger, Freedom Arms & T/C only): The data is intended for 45 Colt Ruger Blackhawk, Freedom Arms, and Thompson Center Contender/Encore Handguns. Max pressure, 30,000 CUP. Do not use these data in any other make or model of firearm.

45-70 Government (Trapdoor Rifles)*: These data are intended for Springfield "Trapdoor", Rolling Block, and Antique Replicas. Max pressure, 28,000 CUP

45-70 Government (Lever Actions)*: These data are intended for the 1895 lever action Marlin ONLY. Max pressure, 40,000 CUP. Do not use these data in any of the firearms listed in the Trapdoor section. Do not use pointed bullets in any rifle with a tubular magazine.

45-70 Government (Modern Rifles)*: These data are for only Ruger No.1 and No.3 single shots, Browning 1885 single shots and Siamese bolt action rifles. Max pressure, 50,000 CUP. Do not use these data in either of the prior two sections of 45-70 data (Trapdoor and Lever Actions).

*Max loads that show an asterisk following the "C" for compressed load with IMR 7828 SSC will not fit with standard IMR 7828. Reduce by 4%.

DO NOT EXCEED THE LOADS DISPLAYED ON THE SITE OR IN ANY HODGDON®, IMR® OR WINCHESTER® RELOADERS GUIDE.