25-06 load problems

[Mauser48]

I've got a mystery for you guys. Im having some trouble with the barnes 100 grain 25 cal tsx bullet. Not the tipped one. The primers blow out every shot. The max in the book is 53 grains of imr 4350 and I used 48. I originally used winchester primers but then I switched to cci and they still blow out. I originally used 1x fired remington brass. I thought it was maybe the brass the I got some brand new ppu brass and that still didn't work. The cases are all trimmed uniformly. Also, I use 48 grains of imr 4350 with a sierra 100 grain soft point and those shoot fine. Never a problem with those. The only difference between the two loads is the bullet. I can't figure out why the barnes won't work. All the barnes bullets are the right size too. Any help appreciated. Thanks!

[Texas by God]

The primers leak? Or actually blow out? I wouldn't use that bullet again until Barnes hears you out. Flame cutting from gas leakage will damage the bolt face reducing primer support- not something you want. Best, Thomas.

[bns454]

I shoot those in my A-Bolt with 53g ok.Seated too long or case neck pinching maybe ?Be Careful anyway.Barnes #3 manual shows 51g Max for IMR-4350.

[Mauser48]

The primer doesn't come apart but it blows pit of the primer pocket and is left I'm the action. Also, the case blows back against the bolt and there is a mark on the case head that is an imprint of the ejector.

[bns454]

Ouch thats overpressure I am sure,try the starting load of 47g if your sure all other options are ok.I might be wrong on my using 53g,my data for my gun is not where I am.I think? I am at 52g,but thats my gun and seating lenth.All guns are different.

[NyFirefighter357]

Check this Barnes published data, they only list IMR 4350 for 80gr. bullets.

http://www.barnesbullets.com/files/2014/11/25-06Remington.pdf

They list: RL19, IMR4831, MagPro, RL22, Magnum & Retumbo

Hodgdon lists IMR 4350 for the 100gr. Nosler Partition 48gr-52.8gr
Bullet

[Mauser48]

I need to check coal. Maybe they are being jammed in the lands and causing a pressure spike.

[osteodoc08]

Sounds like you're way over pressure. The all copper bullets require less powder due to higher pressures due to the bullet design.

Hodgdon data for the 100gr Partition shows no load over 53gr for either IMR or H 4350.

Your gun is trying to tell you something.....

[Bzcraig]

I need to check coal. Maybe they are being jammed in the lands and causing a pressure spike.

This is what I was going to suggest............

[Mk42gunner]

I'm not saying this is it, but I would break down any remaining rounds, and weigh the powder charge.

Stranger things have happened than a person misreading a scale. I have no idea which scale you are using, but with most balance beams it is easy to be off by five grains or more.

Robert

[Mauser48]

I'm using an rcbs rangemaster 750. It's my friends rifle, I will take a look at the rifle and ammo soon. Thanks for your help.

[Yodogsandman]

Different bullets have different amounts of bearing surface. Barnes bullets can have a longer bearing surface which will raise pressures above similar compared loads with other bullets. Only use Barnes load data for their bullets.

https://www.loaddata.com/Cartridge/25-06-Remington-Barnes-Reloading-Manual-4/4533

[Teddy (punchie)]

Yes you have a problem.


1. Was old load showing sign of pressure?

Looking at bolt face lines in case, primer flat no edge left between cup in case and primer, case end (bottom) becoming square or sharper, creator primer be forced around firing pin.

2 . Check with Barnes ask them about the load data. Why is load showing pressure signs.

Some of these have be said already. Double check load data, Double check powder, Double check case size and length, Double check scale, Double check oil on case,

Other things

Seating depth

Bullet weight

Bullet diameter

Bullet alloy

I may not have time to look up data, or if your using a copper bullet may not have data anyway. But when a start a new load I try to look at three different sources for data.

[Mauser48]

Seat depth was 3.100. Book length was 3.080. His uncle has the same gun and with that bullet seats to 3.146. He said it's the same gun that should work fin but I figured his seat depth was a bad idea because all guns are a little different.

[bns454]

Its good to see you still have your fingers !

[nekshot]

Measure the diameter of the bullet. I love barnes for hunting and I agree your gun is trying to tell you something. I do a lead pound impression of all the guns I reload for and then you have a true impression of the throat beginning rifling area. Something is a wee bit tight!