375 ruger feeding issue

[Idahotrophyhunter]

So I have always shot the 260 nosler partitions in my ruger as well as some hornady 270 factory spire point loads. They have always feed perfect - no issues. I bought brand new hornady brass and loaded some 260 accubonds to shoot. Sized them at 3.320 and the mouth of the case sets right at the base of the crimp. In fact there is even some play room in the magazine box.

The issue is when I try to load an AccuBond round, they jam. Can't even get them in enough to attempt to close the bolt. Is the accubonds ogive to blame? Do I have to seat these things even lower? They already look loaded low enough? Should I say forget it and go back to my tried and true partitions?

 

[JD338]

So I have always shot the 260 nosler partitions in my ruger as well as some hornady 270 factory spire point loads. They have always feed perfect - no issues. I bought brand new hornady brass and loaded some 260 accubonds to shoot. Sized them at 3.320 and the mouth of the case sets right at the base of the crimp. In fact there is even some play room in the magazine box.

The issue is when I try to load an AccuBond round, they jam. Can't even get them in enough to attempt to close the bolt. Is the accubonds ogive to blame? Do I have to seat these things even lower? They already look loaded low enough? Should I say forget it and go back to my tried and true partitions?

I am sure the ogive is diferent than the Hornady. Try seating into the cannelure and see if the function. If not, load the 260 gr PT and don't look back.

JD338

 

[Idahotrophyhunter]

I hope they load or I just put $100 down the drain.

 

[JD338]

I hope they load or I just put $100 down the drain.

If they won't feed, list the bullets in the classified. I am sure you will find a good home for them.

JD338

 

[OU812]

Did you measure the length of the Hornady brass to be sure they are in spec? If so, and if they are, the next thing to do is make a dummy round and seat the AccuBond deeper and deeper until the bolt closes. Or you can measure the COAL from the base of the shell to the ogive of the AccuBond and compare to the Hornady or Partition bullets. Any way that is how I would go at it to find an answer.


Bill

 

[usmc 89]

It doesn't sound like a feeding problem it sounds like an overall length problem, set the bullet back in the case in .10 increments until the bolt closes NORMALLY then fine tune it from there. the accubonds must have a quicker trip to the datum than your other bullets.

 

[Greg Nolan]

If you're using the same everything except brass. Check the brass for loading without a bullet in it. It may be you have a tight chamber and you may have to full length re-size to get the shoulder back to where it will feed. The reason I question is that the AccuBond has a long taper and will not touch lands before most any other bullet except some VLDs. In fact I cant use the AccuBond in my 338 Fed because the magazine limits OAL and I can't get close enough to the lands to get any accuracy beyond 4" groups because it's such a long slow taper.
.

 

[Oldtrader3]

Hornady bullets have a parabolic ogive curvature and tend therefore to be called "Spire points" because of this. This is a very different curvature than a tangental radius curvature which is used by Nosler and other bullet manufacturers for their specific bullet ogive shapes. The tangental curvature bullets do have a longer tangent slope of the bullet forward of the land bearing surface which means that they will have to be seated a little deeper in the case for the same land clearance.

Normally Accubonds do not have a cannulure embossed on the bullet. These may be seconds that were made for another .375 (maybe an H&H) which is a longer round. However, the .375 Ruger should work at a COAL of 3.34. Something else is wrong?

 

[Guy Miner]

The .375" Accubonds come with a cannelure.

No big trick needed here - the bullets (Hornady, Nosler) have different profiles and may well require different seating depths. As suggested already, make up a dummy round without powder or primer, and seat the bullet deeper, until it works. Shouldn't be a problem.

With my Number One, the throat is so long, I seat these bullets way out, with the case mouth well below the cannelure. They look a little odd loaded so long, but work great.

Kind of the opposite of your situation where apparently you'll need to seat them a bit deeper.

Regards, Guy

 

[Idahotrophyhunter]

So my old loads were seated were the edge of the case was right at the base of the cannelure. I seated them to were the base is almost right in the middle of the cannelure and now they feed fine...Just have to see how they shoot.

 

[jmad_81]

That is odd. Mine are not seated that deep. I'm loading mine to 3.335" and they feed just fine. Mine is an Ruger African. I wonder what is different between yours and mine?

Either way, glad you got it figured out. Hope it shoots well for you. If they don't I'll be happy to buy the leftover 260 ABs from you. Get some pics up when you get a chance. I would love to see how your stock turned out.