.308 test results
- Thread starter waco
- Start date
waco
Springfield, Oregon
Yeah Rick, they are all the way around. I put a mic on the scuffed area and it still measures right on .311"
I'll try and pick up a .310" die to try out.
waco
Springfield, Oregon
Are those 165-A's sized?
Ian
Notorious member
If it's scuffing .311" I'd leave it alone. Most properly-cut .308 Winchester chambers will peel rings off of a .311" bullet, so you can ignore my advice except for the part about doing a pound cast, which will eliminate any doubt or guesswork about what you need to size to. It will also reveal some potentially limiting factors involving chamber neck diameter, which is really about to come to the forefront now that we know the throat entrance is a lot larger than it should be.
Speaking of Remington anomalies......look up the 300 AAC Blackout chamber drawing on SAAMI's site and see where you could possibly fit a .311" bullet, other than all the way down into the case. Something is rotten in North Carolina. Fortunately, you can hand-load and make up for all that. In a lot of ways, the large throat entrances actually work in your favor, provided the chambers line up with the bore and the necks aren't terrifically oversized.
Speaking of Remington anomalies......look up the 300 AAC Blackout chamber drawing on SAAMI's site and see where you could possibly fit a .311" bullet, other than all the way down into the case. Something is rotten in North Carolina. Fortunately, you can hand-load and make up for all that. In a lot of ways, the large throat entrances actually work in your favor, provided the chambers line up with the bore and the necks aren't terrifically oversized.
fiver
Well-Known Member
sized checked and lubed. [you can't make them 311 unless you break out the lino-type]
just load and go.
I got 5-6000 of the things I just grabbed a good handful out of the bucket.
the Ruger 300's will take just about any combination you can throw at it.
the AAC rifles will not, they are tight and proper.
just load and go.
I got 5-6000 of the things I just grabbed a good handful out of the bucket.
the Ruger 300's will take just about any combination you can throw at it.
the AAC rifles will not, they are tight and proper.
waco
Springfield, Oregon
So I got Fiver's package today with among other things, a bunch of Accurate 31-165-A bullets to try out in my heavy barrel Rem 700 .308
Trying to make a dummy round things just didn't seem right with this bullet for me.
These are sized to .310"
I ran one in a .308" die I found last night then used my Hornady Lock-N-Load OAL Gauge to check where the bullet needed to be seated to at least touch the rifling because I was WAY overshooting it by guessing.
I told you these rifles had LONG throats. Here is a pic of where the bullet needs to be seated to just barely touch the rifling in my rifle.
Your thoughts and comments are most welcome........
Trying to make a dummy round things just didn't seem right with this bullet for me.
These are sized to .310"
I ran one in a .308" die I found last night then used my Hornady Lock-N-Load OAL Gauge to check where the bullet needed to be seated to at least touch the rifling because I was WAY overshooting it by guessing.
I told you these rifles had LONG throats. Here is a pic of where the bullet needs to be seated to just barely touch the rifling in my rifle.
Your thoughts and comments are most welcome........
fiver
Well-Known Member
I will only have one comment here.
look how the lube groove stayed square during that swage down you gave them.
and look how the angle of the drive band to the nose barely changes.
this is pretty much exactly what you want a bullet to do when it is shoved in a barrel.
that slight step from the nose to the band will be where any slump will occur and there is 100% square support behind it to take that and stop it right there.
compare that last part to what that slope in front of it looks like before hand.
this picture is a great illustration why we prefer these shapes on our higher velocity bullet designs.
look how the lube groove stayed square during that swage down you gave them.
and look how the angle of the drive band to the nose barely changes.
this is pretty much exactly what you want a bullet to do when it is shoved in a barrel.
that slight step from the nose to the band will be where any slump will occur and there is 100% square support behind it to take that and stop it right there.
compare that last part to what that slope in front of it looks like before hand.
this picture is a great illustration why we prefer these shapes on our higher velocity bullet designs.
Ian
Notorious member
After having seen how the NOE 299 fits your rifle, my first thought when I realized that Fiver was sending you bullets from the Tomme Boy mould was that the gas check would be the only thing in the case. I was exaggerating it in my mind, but that's no exaggeration!!!
If you can manage to single-load them like that, you might have quite a surprise at how well they shoot. Eagan used to do that very thing.......and win matches.
If you can manage to single-load them like that, you might have quite a surprise at how well they shoot. Eagan used to do that very thing.......and win matches.
fiver
Well-Known Member
he used to run them out like that so he had at least part of the nose in the rifling.
I run the necks soft from annealing and don't have any sort of M-die tool I just use the expander that's in the rcbs die.
I will bump the case mouth against the 8 mauser expander to put a little flair on the case mouth, but that is about all the fancy i got.
I run the necks soft from annealing and don't have any sort of M-die tool I just use the expander that's in the rcbs die.
I will bump the case mouth against the 8 mauser expander to put a little flair on the case mouth, but that is about all the fancy i got.
F
freebullet
Guest
Interesting...
My sks likes the Harris bullet like that. It gets ugly in autofeed mode. In single it likes it upto 1850 or so.
My sks likes the Harris bullet like that. It gets ugly in autofeed mode. In single it likes it upto 1850 or so.