I was hoping you would comment on this, as I know you were testing the sierra 155's. Next step for me if to see if seating distance has an impact on the group size. I still have room to move it closer to the lands. I also tested some Federal XM90 ammo I bought in bulk for M14 and Garand use, and that prints a terrible pattern, with our without the brake. So bad it makes holes in the wrong target.
Click no boom
- Thread starter Grizzlypeg
- Start date
I was hoping you would comment on this, as I know you were testing the sierra 155's. Next step for me if to see if seating distance has an impact on the group size. I still have room to move it closer to the lands. I also tested some Federal XM90 ammo I bought in bulk for M14 and Garand use, and that prints a terrible pattern, with our without the brake. So bad it makes holes in the wrong target.
Any idea what the difference between a cheap brake and an expensive brake?
Grizzly, the Benchrest world, use Eezox or Pro Shot zero friction on the guys of the bolt and the outside. I have seen the rail gun guys use the zero friction on the rail buttons. Bolt grease, I really like using the white Mil-comm TW25. Good stuff.
Bullets pulled and powder emptied. Haven't deprimed them yet. Didn't think to do that. The primers don't appear to have gone off.
That's been my experience as well, usually a misfire doesn't do a damn thing except click. In a no powder situation it'll burn the base of the bullet a nice sooty black. I've had the primer scorch the powder into a yellow mass and not light it, tiny pinholes holes burnt in the primer without lighting the rest of it, and yeah I've had a few that dislodged the bullet but I can count them on one hand.
Usually when Federal primers don't lighter-up it's time to look at the gun with suspicion.
Take the primer outside and whack it with a hammer. If they didn't go off but aren't dudds you'll know. Lol
Don't forget to wear ear pro.
Last edited:
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
you got a couple of dud primers... it happens.
If more duds pop up in that lot of primers, consider a new lot or another brand.
Jerry
Well, I only suspect that you had two dud primers, which I never experienced with Federal, or even heard of. Best that you give me the rest of your Federal primers testing. This is strictly a volunteer efford and no charge on you're part.
If you please, as someone mentioned, go outside and use a hammer to conduct a test. I believe you will be OK with the rest of your primers.Well, I only suspect that you had two dud primers, which I never experienced with Federal, or even heard of. Best that you give me the rest of your Federal primers testing. This is strictly a volunteer efford and no charge on you're part.
I guess I will simply find out if I have a continuing problem, by carrying on. At least now I know the firing pin is clean and grease free. Next time its sufficiently warm I'll hit the range for more testing.
I'm a mechanical contractor. Sometimes when I'm working with my guys I'll use that line.
The older ones get it. The younger ones, not so much.
Here is the primer I removed. It looks like there is some sort of gunk around the edge if you zoom in. Maybe that's just carbon it picked up from the primer pocket as it was pressed in.
Usually Federal primers are a dark or light red inside. Why are they a golden yellow?
Primer are made to be seated at the bottom of the pocket - not flush with the case head.
On most this will be .006-.009 below case head to obtain a light crush of the anvil.
yellow green = large pistol primer
looks it was not seated deep enough. The anvil is protruding past the cup.
