WYO300RUM
Well-Known Member
Exactly ! I know you get it.It used to be a sportman's paradise and a bit of a firearm's mecca. It's truely a shame what happened. Oh well on to new happy hunting/ fishing adventures!
Miss the ocean fishing .
Exactly ! I know you get it.It used to be a sportman's paradise and a bit of a firearm's mecca. It's truely a shame what happened. Oh well on to new happy hunting/ fishing adventures!
Im curious how many times the brass has been reloaded prior to showing pressure signs?What gives me pause is that last week, that load started to fall apart after 25 rounds. Slow three shot groups, with decent breaks but the last several rounds starting showing pressure. Sticky bolt lift and extractor marks.
"The Once Great Republic of California".It used to be a sportman's paradise and a bit of a firearm's mecca. It's truely a shame what happened. Oh well on to new happy hunting/ fishing adventures!
Actually it's considered to be relatively stable.I worked up a load with Hunter and 139 Barnes LRX.
-average 3,275 fps
- .720 MOA for five shots. Three shots at .510.
- SD was 9
This was going to be my go to load.
No pressure, good standard deviation, accurate. Plus, lots of energy out to 600 yards. The bullet, being all copper, should penetrate well. Additionally it's still hitting at around 2,300 fps at 600 yards. The ideal minimum for a Barnes bullet.
What gives me pause is that last week, that load started to fall apart after 25 rounds. Slow three shot groups, with decent breaks but the last several rounds starting showing pressure. Sticky bolt lift and extractor marks.
The ammo was exposed to the sun, so I figured that plus the chamber heating up, pushed the load too far.
So today, I slow things way down and keep the ammo out of the Sun. Still very accurate at 100 yards, but at 425, I'm getting like 8 inch groups. It's all vertical spread. So I throw the chrono on, my SD is 33.
***?
So I'm guessing that Hunter is extremely temp sensitive? Different temp today, hot chamber messes with the powder?
Also, I was shooting into a very minor headwind. Maybe the variation in the headwind could have caused that much variation?
Nonetheless, I just paid wayyyy too much for 5 pounds of IMR 7828 on gunbroker.
Can someone with more experience chime in? Do I ditch this powder? Is there something else I'm doing wrong?
You're still going to need to use a carbon specific solvent like Boretech Carbon eliminator to really deal with the carbon ring which is surely there. Hoppe's just doesn't get it.**Update**
I cleaned the barrel with Hoppes copper cleaner….ran a soaked patch through 4-5 times. So much solvent was in there that it was draining out the magazine. I let that sit for 15 minutes.
I used a bore brush and and scrubbed for a couple minutes, focusing on the base of the barrel
Then I ran a snake through it 5/6 times.
Same load, just shot three rounds with an SD of 6 and an ES of 13. I'm still at the range and haven't measured the group but it looks pretty good through the scope.
Looks like it was a dirty nasty barrel.
Thanks for the help!!!
What about other groups, and how many times have you reloaded the brass?No pressure. Velocities were pretty constant. That group ended up being .586 center to center.
Seems like the rifle is back to where it was.
how many times have you reloaded the brass?Rock Creek 24 inch tube with about 600 rounds through it. Ruger action.
It's slightly over the maximum load that Barnes publishes. Other that last range session, I have never had any pressure signs at all.