Been reloading for my Remington750 in 35 Whelenand some of the primers are being pushed out, not all the way but noticable. The load is fairly low, anybody notice with autoladers the primers get pushed out some? Also anybodyseal there primers and does that help some?

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sure the bullets aren't getting setback into the cases under recoil? that'll run your pressure up quick and push a primer... How many times have you reloaded that brass and did you ever "uniform" the pockets? might be they are just getting loose or you have a batch of small diameter primers... just a few things to think about...

i ran up some hot (what i consider to be near max from book data) Reloader 15 rounds in the 35 whelen AI last weekend... and i wasn't seeing flattened primers which surprised me... my shoulder and the headache from recoil told me different.. further testing to follow....

BTW $503 on auction arms...

New remington brass, with federal primers. I didn't think about the inertia, preasure isn't the issue about 10,000 psi below max and the round is a compressed load. If I recall the federal primers are the softest of them all, may need to move to Winchester or CCI. Also going totry sealing the primer and see if that helps. Thanks for the help.

ok just throwing this in the mix. Are you sure the primers are seated correctly in the first place? I made the mistake one time of grabbing the wrong shell holder for my hand primer, I quickly noticed that when I sat the casing down the primer wasnt seated all the way causeing it to wobble. Could this have happened and then when you shoot it falls the rest of the way out? I dunno, just trying to help.

positive.

CrimeDog:

What load are you using?

Backed out primersare usually caused by low pressure loads and not High pressure loads. You say that these loads are "fairly low". I'm guessing that if you increase your powder charge a bit the backed out primers will stop.

60 grains of RL15 with a 200 grain serria round nose 44,800 cup, interisting thing is the primers are not flattened, which leads me to beleive the inertia thery.

sure do have the case filled up pretty well with 60 grains...

do you have a photo of the primers and case after firing to let us see exactly what you are talking about?

i have NEVER had a primer push out or fall out..... i HAVE had primers (particularly in my 280 rem) that are so flat i can see the machining marks on the bolt face and there is no rounded edge.... 57 grains of 7828 is about as far as i can push the 280 with a 175 partition, 2690 through the chrono... all i shoot are CCI BR-2 primers in all of my large rifle centerfires... they are fairly hard... and do a good job and are pretty much always consistant and i see no discernable difference between them and a regular large rifle primer over the chrono or in pressure signs...

ironically... 57.5 grains of reloader 15 and a 225 Nosler BT are the best shooting round i've found for my 35 whelen AI using a CCI BR-2 also... 2550 over the chrono.. not a barn burner but pretty consistant... leaves the primers round on the corner and just begins to flatten out the face... but 59.5 grains gives the same primer look...

i don't play around with reduced loads of slow powder... so i have never had any first hand experience with detonation...

Federal large pistol primers are soft as butter, i do know that... kinda got me a bit concerned in my 45 LC with hunting loads when i first began using them...