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Posted: 5/12/2011 6:12:55 AM EDT
| Can you use reloading data for a heavier bullet for a light one? I have 62 gr bullets but the load data I have is for 63 gr. Will this cause any issues? |
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As this is an open forum and being that SPEER has said that thier data is for/with their bullets (not someone elses products).
IMPORTANT NOTE: Reloading data published by SPEER are for SPEER bullets. Many of our bullets are of unique construction; there is no such thing as "generic loading data" any more. Other bullet makes may produce significantly different pressures and velocities. We make no warranty that our published loads are safe with another make of bullet. You, the reloader, bear the ultimate responsibility for knowing your firearm, loading equipment, and techniques.
That all being said............I wouldn't want you coming back to say that I caused you injury, damage to your firearm or ANY harm in any way. You could/should consult the bullet maker (they usually have info for you). So, in other words........the risk is yours to take or not at this point. ME.......I'd go for it. But, that's ME. And, YOU being YOU..........well, it's your call. 
Additionally (in case you missed it)................ 1. Always use loading data published by a reputable component manufacturer. Your brother-in-law is a nice guy but, statistically, he's not likely to be a professional ballistician.
2. Never start with a maximum load. Always begin with the starting load and work toward the maximum in increments, testing at each step. This provides you with a safety margin in case of some undiscovered change in the components. Component manufacturers strive to maintain lot-to-lot uniformity, but some variance may occur over time. 3. Always use the latest data for your cartridge. Over long periods of time. components may change. Using the latest recommendation insures that your loads reflect current technology and standards. 4. If new to the art and practice of reloading, use only moderate loads until you gain experience with the cartridge, your firearm, and your loading equipment. 5. Leave experimentation to the professionals. Published data is FACT. It is not a "jumping-off point" for wild experimentation. 6. Never mix propellants. Blending propellants is extremely dangerous and should never be done. 7. Always reduce loads when changing components. Sometimes, you cannot match the exact combination of components that the component company used when developing the load. Drop back to the starting load to build a safe margin for any changes. Taken from Speer’s web site. And.............. Read: How do changing various components affect chamber pressure and velocity?
http://www.frfrogspad.com/miscelld.htm#components Aloha, Mark |
| Thanks for the link, it does have help information. I am currently using a Lee Setup and Data. The data is coming from Lee's 2d Edition Modern Reloading as well as the data sheet from the Lee Loader Kit. The one caveat it has, is not to use a heavier bullet for the type of powder use. I'll load up some rounds and try out this weekend, time permitting. |
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It's always good to have and check with several manuals and/or trusted sources when working with a NEW load.
Here is another data source (note: for ARs)........... http://accurateshooter.net/Downloads/sierra223ar.pdf Aloha, Mark |
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Quoted: Thanks for the link, it does have help information. I am currently using a Lee Setup and Data. The data is coming from Lee's 2d Edition Modern Reloading as well as the data sheet from the Lee Loader Kit. The one caveat it has, is not to use a heavier bullet for the type of powder use. I'll load up some rounds and try out this weekend, time permitting. Are you using 62gr Speers, pulled SS-109's, or the 62gr FMJ from PPU? What powder are you using? |
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Thanks for the link, it does have help information. I am currently using a Lee Setup and Data. The data is coming from Lee's 2d Edition Modern Reloading as well as the data sheet from the Lee Loader Kit. The one caveat it has, is not to use a heavier bullet for the type of powder use. I'll load up some rounds and try out this weekend, time permitting. Are you using 62gr Speers, pulled SS-109's, or the 62gr FMJ from PPU? What powder are you using? *****************I I am using Armscor Bullets bought from Midway USA and Hodgdon H 380 powder |
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Quoted: Quoted: Quoted: Thanks for the link, it does have help information. I am currently using a Lee Setup and Data. The data is coming from Lee's 2d Edition Modern Reloading as well as the data sheet from the Lee Loader Kit. The one caveat it has, is not to use a heavier bullet for the type of powder use. I'll load up some rounds and try out this weekend, time permitting. Are you using 62gr Speers, pulled SS-109's, or the 62gr FMJ from PPU? What powder are you using? *****************I I am using Armscor Bullets bought from Midway USA and Hodgdon H 380 powder The Armscor bullets are not that great, but you can work with them. I would not use H-380. It is a bit slow and you run out of room before you get to a useful velocity. |
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Thanks for the link, it does have help information. I am currently using a Lee Setup and Data. The data is coming from Lee's 2d Edition Modern Reloading as well as the data sheet from the Lee Loader Kit. The one caveat it has, is not to use a heavier bullet for the type of powder use. I'll load up some rounds and try out this weekend, time permitting. Are you using 62gr Speers, pulled SS-109's, or the 62gr FMJ from PPU? What powder are you using? *****************I I am using Armscor Bullets bought from Midway USA and Hodgdon H 380 powder The Armscor bullets are not that great, but you can work with them. I would not use H-380. It is a bit slow and you run out of room before you get to a useful velocity. Thanks for the repoly. I agree Armscor are workable and cheap. I think for more serious shooting, I have good success with use of Sierra and Hornady bullets. I have been thinkg of using polymer tip bullets for SHTF ammo vs hollow points. |
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The things about different bullet manufacturers to keep in mind are that the ogives are different. One bullet might be good to go and another may be jammed into the rifling raising pressure. One bullet may seat deeper into the case than another raising pressure. Bearing surfaces may be different lengths.
You can't use the same load for every bullet in the same general weight class. Look online and see if your bullet's maker has load data. Many do. Jim |
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I think one reason Speer has the caveat is that there are now "green" bullets coming to market that carry little or no lead. The all alloy bullets can be longer for the same or very close to the same weight of lead filled jacketed bullet. This causes more engraving friction between the bullet and the rifling. Some of the "green" bullet designers use driving bands to reduce contact with the rifling and get friction back down to a comparable jacketed lead bullet. Of course, the other effect is that the shank of the "green" bullet will extend further down into the case for the same Cartridge Overall Length. So, the useable case volume will be smaller.
Another variable would be flat base or boat tail. The flat base, for the same weight might have a slightly higher driving friction for the same weight bullet than the boat tail. |
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