Mike Matteson's latest activity

Interesting on the reamer change! I was looking at Peterson Long cases in 300WM to use. I have a 7mm RM that I going have to reload for...

By SAAMI standards you are correct. I'm not a commercial ammunition manufacturer and do not follow SAAMI specs 100%. I choose to...

I'll take Montana. I spend about half my time in Montana, the other in Sh*thole California.It use to be better darn good in Mexilornia...

Or as close to it, as you can get, on this earth. The older I get the more I hate the cold. Otherwise I would really consider moving...

Harmonics are everything, have seen barrels of 30” difficult to tune, barrels of 32” easy to tune. A happy medium appears to be 28”-29”...

You talking about Litz the Aerospace Engineer & Applied Ballistics guy? Now what could he possibly know about all this stuff😆?

There is vido out there, but can't remenber where.

Here my .02. It depending type of powder being used, and type of primers being used. The components makeup sets things into motion...

I think that the real issue here isn't so obvious. We're handloading to fine-tune the exit release of the bullet at the optimum point...

Sometimes a shorter barrel shoots better just because it changes the harmonics.

My limited experience is shortening a barrel length typically only affects the speed and not the accurracy. A big IF is if it does it...

I recently had a 24” 300WM cut down to 22” to remove porting and thread for a suppressor. Aside from being 75 fps slower, rifle still...

You and I read the article, so there's nothing secret about it. Profile also has a say in that, and the bullet design, seat position...

There is a process that said to work in closing down the primer pockets. I haven't tried it yet. So I don't have any real experience as...

I change over 25 yrs ago to neck sizing my belted mag cases. It stop the case separation and lost of case in 3 to 4 firing. Now getting...