I'm new here and new to 10mm loading. I have been loading range ammo and using Winchester large pistol primers which work as standard and magnum they say. I'm looking to getting started in loading so hot stuff and have always used cci's for hot revolver rounds and would like to do the same with 10mm. For longshot and anywhere from 135 to 200 grain bullets should I use standard or magnum. Sorry if this has been discussed in the past. Thanks

While the standard primers will work with most all of the powders except the AA#9.  I do use magnum primers on occasions with some heavy charges to get optimum ignition.  However the Winchesters work just fine.  I do find the CCI's to be a tight fit for some makes of casings.

  The Win primers will be fine.  It's what I use, it's also the primer listed in Hodgdon's online data.

I'm loading w/ the CCI 350 mag primers with AA #7.   

By going with the cci magnums would I run into any problems with any 10mm loads?

Quote from: Arrow on August 16 2013 06:48:33 PM MDT
By going with the cci magnums would I run into any problems with any 10mm loads?

Maybe if you are at the very max loadings for a particular round.  If you are not at that point then you should be just fine.

Well that is not what I was thinking. I would think the magnum would be for very hot loads to help ignite the large charge of powder and that it could be too much for a light 10mm load. What I am asking is what primer should I buy that will work from light loads all the way to nuclear loads.

Quote from: Arrow on August 17 2013 06:13:13 AM MDT
Well that is not what I was thinking. I would think the magnum would be for very hot loads to help ignite the large charge of powder and that it could be too much for a light 10mm load. What I am asking is what primer should I buy that will work from light loads all the way to nuclear loads.

Whatever you can find.  I'm serious, primers are scarce. If all you can find are Mag primers, buy em they will work, if all you can find are standard, buy em they will work too. 

Quote from: Arrow on August 17 2013 06:13:13 AM MDT
Well that is not what I was thinking. I would think the magnum would be for very hot loads to help ignite the large charge of powder and that it could be too much for a light 10mm load. What I am asking is what primer should I buy that will work from light loads all the way to nuclear loads.

I use the CCI mag primers for reliable ignition in cold weather.
'Course they ignite just fine when it's not cold. 

McNett recommended the use of mag primers years back. It was just after he'd started up Double Tap Ammo and we were corresponding on-line about a designer "training" load I was trying to make using Sierra's old 190gn truncated FP bullet and AA #7.
I'd stocked about a thousand of those bullets and had plenty, back then, of AA#7 along with 5,000 CCI 350s.
I've stuck with using mag primers with 10mm loads, since I normally load in the upper mid-range to max anyway.
I prefer CCIs 350s because that's what I had experience with from McNett's load data and, since then, it's what I've been able to get.