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Ammo and Reloading Factory Ammunition, Reloading, Components, Load Data and more.

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  #1  
Old 01-18-2013, 10:51 PM
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stilly stilly is offline
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Default can substitute large pistol magnums for large pistol?

ANyone do this?

Yeah yeah I know the rules, that is why I use SR for SP now.

So are there any issues using LPM for LP or SRM for SR for SP ?


I saw a huge inventory of primers but they were only LPM and SRM and I thought, hey better than nothing...

Of course they were gonna be for my friend that I am getting into reloading. (yeah blow off his fingers now and I get his stuff at a discount).

But seriously, I think that there is little to no difference with hp-38 or win231 powder or even wst or titewad or bullseye but what do I know, that is why I am asking.

Anyone do this yet in the interest of consolidating primers and making them more useful?
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Old 01-18-2013, 11:00 PM
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Yes you can do that. With nothing bad happening.
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Old 01-18-2013, 11:14 PM
Whiterabbit Whiterabbit is offline
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Quote:
Originally Posted by stilly View Post
ANyone do this?

Yeah yeah I know the rules, that is why I use SR for SP now.
By rules you mean excercise care if you normally shoot a near max load?

yeah, totally. Might change your POI or group size. But completely interchangable.

I just swapped over my 7x57 from LR to LRM since I use them in the 338 and 460 and 50. Now I only need large quantities of ONE primer.

People said I'd lose accuracy. I learned that no 2liter bottle is safe at 300 yards. That's plenty for hunting.
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Old 01-18-2013, 11:23 PM
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In the testing I have done by changing to large primers is you lose some fps, the slower the powder the more fps I lost, but this was for a rifle.
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Old 01-19-2013, 7:25 AM
Bill Steele Bill Steele is offline
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I think if you are looking for a broad generalization answer, which most people are or bumper stickers would never have been invented, yes you can safely substitute, just don't start at max load.

I think the actual answer might be more complex, caliber, brass, powder and brand specific. For handgun, the most detail and hairy edge research I have done is with 10mm. When loading into the twilight zone where loads were tested in .1gr increments and my primitive pressure measuring techniques like head expansion criteria, blown primers and the venerable smiley, I found magnum primers did make a difference in pressure and where I had to draw the line, but not a major difference. They also made a difference in SD's (generally better) with the most of the powders I tested (AA #9, VV-N105, Blue Dot, Longshot). I now load all my 10mm rounds with LPM's.
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Old 01-19-2013, 8:25 AM
rsrocket1 rsrocket1 is offline
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You'll shoot your eye out

My first box of "LP" primers was a box of LPM that the doofus from Cabela's handed me from behind the counter when I was buying a complete loading setup. I didn't know any better to check until I realized the labeling when I got everything set up and was ready to start loading.

After lots of research and asking, the conclusion was that it shouldn't be a problem and to start low and work up (as usual).

Bottom line, for 45ACP it made no difference with mid range loads over the chrony and so long as you are running in that range (especially with a low pressure round like 45ACP). If you can find a stash of LPM's at a reasonable price, don't hesitate in buying it. As usual, just work your loads up and give yourself a margin of safety below the max.

I've also substituted SR and SPM for SP applications, but never have and probably won't use an SRM in an SR application because my most accurate load for .223 is close to published max.
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Old 01-19-2013, 8:50 AM
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Yeah I am still not into accuracy testing yet and I figured that the general answer is prolly gonna be a YES, go for it, but with a reservation or two.

If it is only an accuracy thing then that is fine, these are gonna be hp-38 starting loads and of course we will be working them up.

Thanks fellas. Good input (as usual).
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Old 01-19-2013, 9:16 AM
Divernhunter Divernhunter is offline
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You may find better accuracy with the mag primers.
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Old 01-19-2013, 10:18 PM
checkenbach checkenbach is offline
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Winchester LP box says standard or magnum loads...
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Old 01-20-2013, 6:03 AM
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Quote:
Originally Posted by checkenbach View Post
Winchester LP box says standard or magnum loads...
Why Yes it does! Always wondered about that.....
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