Got A Good Load But Got A Problem

[Bigad 136]

Found a nice accurate round now but find it hard to open the bolt after shooting each one been told it's due to pressure so was thinking of going back a few grains to see if would open easy and hopefully keep a nice tight group. Has anyone had this problem and how did you get around it ?

[Tremo 138]

Found a nice accurate round now but find it hard to open the bolt after shooting each one been told it's due to pressure so was thinking of going back a few grains to see if would open easy and hopefully keep a nice tight group. Has anyone had this problem and how did you get around it ?

 

Without knowing any more details mate I would have to say that it sounds like overpressure. What weight powder and what weight are you running? What is the maximum weight stated by the vendor?

 

Don't shoot any more of these rounds until you have established the cause!

Edited April 11, 2016 by Tremo

[Bigad 136]

Running 36grains max stated is 37

[walshie 2,804]

Does sound like overpressure. Are there any other signs like flattened primers?

 

What weight bullet and what powder are you using?

[Deker 3,453]

I don't reload as such but have a bit, and know several who do.

 

First reaction is overpressure as already mentioned, something to be a bit careful about!

 

[Tremo 138]

I would start again at the minimum load and work up, only this time make a note of where the stiff bolt lift and/or tough extraction begins.

 

This is one of the headaches that comes with reloading .............. All rifles are different. The specified data for a particular load my not be the most suitable for your rifle.

 

Have you saved your spent cases from the overpressure firings? I would inspect them to see if anything obvious is visible e.g. -

 

http://www.massreloading.com/reading_pressure_signs.html

https://www.youtube.com/watch?v=-utTFzrJi2M

 

What make powder and primers are you using? Also what weight pills?

[Bigad 136]

At 35.5 grain seemed fine but groups opens up a bit the primers don't show signs of high pressure but they are cci the powder is reloader 15 pushing a 55grain vmax pill. Think I will start at 34grains and work up again

[Tremo 138]

I would mate. . If you can't get the results that you want try a different powder. I've never used RL15 so I can't give any advice there. I used Hodgdons CFE 223 out of my 22-250, and still use it out of my 223. It gives good velocity and accuracy. It meters well and is very clean.

 

Keep an eye on that pressure and take care.

[dicehorn 38]

Could be over pressure. However could be another problem - are you neck sizing only? If so, it could be that the shoulder datums could have crept forward - are the rounds also causing quite a bit of resistance when closing the bolt on them? Remedy - full length your cases. Assume this is a 22,250? If so are you keeping your case length to around 1.905"

 

Going back to the possibilities of over pressure, had a look around the web and with RL 15 , the weight of powder you are using is around what people are shooting with the 50 gr bullet with the 55 gr bullet most seem around the 34 - 35 gr mark.

[devon flighter 421]

definitely sounds like over pressure ,how close to the lands are you ? anyone run it through quick load ?

[Bigad 136]

Bullets cycle fine if not been fired keeping brass trimmed so it's at 1.895 and bullet is seated at 10thou from lands going to use less powder as I like my gun and face just means playing with reloads again till I am happy

[devon flighter 421]

you look to be on a max load according to quick load and only 200 bar from max (be carefull) all depending on barrel length and case volume and what i can pick up from thread !.you have a pm

[Graham M 36]

Are the primers overly flattened or have they lifted out of their pockets slightly.

G

[Graham M 36]

oooops didn't read the thread properly

 

 

 

G

Edited April 12, 2016 by Graham M

[leeroy 29]

Could be quite a few things , do you crimp, bullet seated too long or pushed in the case too far. Are the cases clean cut to length, just a few to check.