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Any .300 wsm reloaders on here? (Long read)

Tennessee Lead

Tennessee Lead

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I had saved brass from my .300 wsm model 70 for a few years and had a buddy of mine reload for me. It was the silver brass casings from the Winchester Silver Tips he tried and tried to use them but they never would close in my bolt. He eventually threw them away and bought new brass. He loaded them up and closed fine, but he had them loaded very light doing 2800 FPS with a 150 grain bullet. I never used them and went back to factory ammo. Been shooting 150 grain core lokts and saving the brass.

I've purchased 165 grain interlock's and 4350 powder and magnum primers. I had a man who is in his 80's load me up 6 too try. He loads almost every day so I feel he will do s good job. 4 of the 6 will not close in the bolt again just like before.
I still have the new brass that's loaded with the light loads we are pulling those to load the 165's for me to try since they close with no issues.

I have a RCBS 2 die set for .300 wsm and using the Nosler book to load by.

My question to yall is what do you to solve this issue? I really don't want to have to purchase new brass every time to hand load for my gun.
 
is it a neck size die or full length size die,,if it is a FL die and is adjusted correctly and you should be able to use that brass,,sometimes the press will flex and you have to adjust the die down a little further,

if it is a neck size die you will need a FL size die,,
 
You need to adjust your full length resizing die so your resizing the whole case. Pull handle down all the way then screw FL sizing die down until it meets the shell holder, lower ram then screw the die one turn lower. Place case in the gun and check to see if bolt closes if not screw the die in half turns until case chambers. I like a little resistance when closing the bolt for a snug fit, not hard just a slight crush fit.
 
Interesting, Midsouth has small base dies for the 300 WSM. And, they only recommend them for use in rifles that are not bolt action. Kind of interesting that there could be chamber size issues for this caliber.

So almost for sure this is a die adjustment issue as mentioned above if it is a FL die and if a neck size die only then indeed a FL die is needed.

I have a FL RCBS die set for my Bolt 300 WSM and I can tell you the brass is tight in the chamber.
 
I was told about a small base die a couple hours ago and looked it up and read that about not for bolt action rifles. I will find out in a day or two about my die set hopefully it can be resolved.
 
Interesting they would.say that bout small base die as having one can sometimes come in handy.
I agree the full length sizers weren't adjusted down far enough "cam over" is the term. Case length an cartridge overall length could be in play as well.
 
Before buying another set of dies, there's a pretty quick and easy way to see how much farther your brass needs to be bumped back. Slide the blade of a feeler gauge between the brass and the shell holder to remove slop in the shell holder. Usually .001-.002" is all that's needed when the brass will enter the chamber but is hard to close. If the extra .001-.002" is enough to fix the problem, chuck your die up in a lathe and shave .003-.005" off the bottom.
 
Rubberduck270 said:
Before buying another set of dies, there's a pretty quick and easy way to see how much farther your brass needs to be bumped back. Slide the blade of a feeler gauge between the brass and the shell holder to remove slop in the shell holder. Usually .001-.002" is all that's needed when the brass will enter the chamber but is hard to close. If the extra .001-.002" is enough to fix the problem, chuck your die up in a lathe and shave .003-.005" off the bottom.
Click to expand...

redding makes shellholders that will do the same thing,,but he will still need a FL die
 
I load for 300wsm. I really had to play with my die set to get the shoulders right. First step is to throw all of the nickle plated brass away and go buy some good nosher or lapua brass. Are you setting your COAL to factory suggested or do you have a chamber gauge? Try backing you sizing die out a little. you may be collapsing the shoulders my a small amount causing the case not to chamber correctly
 
That explains it. I have a .270 win that did the same thing. Check the trim to length. For some reason the Black Shadow rifles produce very long neck brass. I had to trim every brass I shot out of my rifle because after 1 firing the brass was out of spec and way too long. I would resize then load the brass and the bolt wouldn't close all the way. Trimmed the cases and problem solved. This is my experience, but yours may be different. Check your case lengths and see if they are within spec.
 

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