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Posted: 6/1/2008 9:44:44 AM EDT
| I am just starting into rifle reload after loading 9mm and I picked up some IMR 4895 powder for my M1A and was looking at Fed 210 primers, I found the reg flavor and the magnum ones so my question is can I use either |
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Yes you can use either, you will find that 41.5 gr IMR 4895 with a 168smk has served us highpower shooters very well. Watch the federal primers they are pretty sensitive and you can most certainly get a slam fire with an M1A. If your looking for just blasting ammo I cant help ya there.  ETA: I would use CCI primers in an M1A. |
| Well I am not looking for blasting ammo but am looking for a secure load to run thru my M1A and was told that the Fed 210's would work well with no issues my Speer Manual says 200-250 on primers but they were out so his next selection was the 210's, should I be concerned and return them and go elsewhere to get the CCI's |
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I use fed 210s in all my 7.62mm loads for my Match M1A. There are some who will recommend only military style primers (or mag. primers because, they think it has a harder cup-though it may not be true, all of the time) for a semi-auto firearm. You should be the judge of how much RISK you're willing to take.  Aloha, Mark |
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Like I said I am new to reloading and maybe I am making more out of this than there is but I don't want a 20 rnd mag going full auto or have it blow back in my face but there are those like you who I rely on who have a ton more experience than me so if you guys have used them with no issues they must be ok, as far as my M1A goes it's in very good shape and has not had any issues with slamfires. The load I am looking at is : LC Mil-surp MG Brass trimmed, cleaned and crimp removed IMR 4895 powder Fed 210 primer 147g BTSP |
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You should be fine.....use load data from a reputable source and remember to start low and work your way up......watching for signs of, "over pressure." As for the "slam fire" issue. There are many reasons for a slam fire, not just the selection of your primer. Note what CCI says: 
Aloha, Mark |
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FYI, the difference between magnum primers and regular primers is the length of the spark column the primer puts into the case. A magnum primer puts a longer spark curtain into the case to get more uniform ignition on the slower burning powders. The primer cup is NOT thicker. The anvil is shaped different on a magnum primer than from a regular primer. You might be surprised how much pressure increase you can have by switching between the primers with the same powder and load. DON'T switch between the two. |
I'm curious about whether you're using brass processed by someone else and whether it has been sized, too. |
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Yes it has, I purchased it from 308 Brass it has been sized, cleaned and trimmed (2.005"), it seemed like a good price I figure I can get maybe 4-6 reloads in before I have to toss it for recycle I planned on running it thru my re-sizer again just to make sure, I am setting up my 550 for 308 after having done 9mm with fairly good success for no reload experience and relying heavily on you guy's advice and experience. |
FYI........Various brands differ on how they make um. Example:
And CCI says............
Note: My red color added. And, about the thickness............ www.jamescalhoon.com/primers_and_pressure.php But, remember.............things, may change. What you do and how you use the various products are, up to you to decide. Aloha, Mark |
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