Re: 7 STW brass wont chamber
I think Buffalobob it talking about Larry Willis @ Innovative Technologies and if he is, Larry is still taking orders for the next production run. Who knows when that will be! The sizer die that he offers allows the case to be sized up to the belt where all other dies stop just short the belt.
In my experience with belted mags, not being able to close the bolt has always been a headspacing issue and remember that measurement is typically taken off the belt not the head of the case.
Correct me if I'm wrong but I assume you have reloaded for this rifle in the past. So you should know what the case diameters / measurements should be for the case to fit properly?
If not, I would measure a fire formed case to determine your chambers dimension and see how much of a difference there is in headspacing from the new brass after sizing and the fire formed case. After sizing the brass there should only be 0.001 - 0.002 max headspace and NO MORE. Anymore than that and your asking for serious trouble. But in this case not having enough headspace will cause this problem or "maybe" just maybe your trying to cram the bullet into the rifling and may not realize it. How far off the lands do you typically run? If you seat the bullet to SAMMI specs, you should be all right provided you know how much free bore you have. Like others have said, those spec's are only guide lines and may not always apply to your rifle.
Overall, there could very well be a simple explanation to your problem with a little more information. Though I have never seen this before "first time for everything" I still I find it hard to believe that the belt being to long would cause this problem. There is typically more than enough room in a mag chamber to account for this. Unless of course we're talking about a custom barrel with real close tolerances.
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Last edited by WRG; 05-24-2009 at 10:06 AM.