Post by: eastcoastguy on August 08, 2015, 02:00:26 PM
Post by: Bob33 on August 08, 2015, 02:09:03 PM
Post by: eastcoastguy on August 08, 2015, 02:15:13 PM
Post by: grundy53 on August 08, 2015, 04:03:21 PM
Sent from my E6782 using Tapatalk
Post by: 300rum on August 08, 2015, 07:32:15 PM
What rifle/round are you shooting and what year was it made? I have seen over pressure more then a few times with factory ammo, usually in lever actions such as the model 88 or pump guns but have seen it in bolt guns too.
Post by: fastdam on August 08, 2015, 07:57:52 PM
Post by: MarkyMark on August 08, 2015, 08:02:28 PM
Sent from my iPad using Tapatalk
Post by: 300rum on August 08, 2015, 08:14:30 PM
I have done this for a few rifles that I don't or don't want to reload for. One of them, a 1960's Remington 700 7mm mag., loves Winchester Ballistic Silvertips so I shoot those, they clover leaf at a 100 yards prone off a bag. I purchased all the boxes I could in the same lot and finally ran out a year or two ago. I was worried that the lot difference would change the poi with a new lot but it didn't. 10+ years later and the poi is the same, irregardless of the lot.
It is expensive to do (now days) but well worth it. I am now in the process of doing it with an LR-308 long-range setup.
Post by: eastcoastguy on August 08, 2015, 08:24:55 PM
Post by: fastdam on August 08, 2015, 09:20:53 PM
Post by: eastcoastguy on August 08, 2015, 09:33:34 PM
Post by: 300rum on August 09, 2015, 06:57:22 AM
Post by: TVHunts on August 09, 2015, 07:12:06 AM
Try thoroughly cleaning your chamber. If you don't have a chamber mop/cleaning kit make one out of a wood dowel. Under size the dowel to accept a thick cotton t shirt and scrub the heck out of it. I was having this issue with an A-Bolt in 300 Win Mag using hand loads that were in no way hot loads and it solved the problem. It's worth a try.
A picture of your primers would help.
Good luck
Post by: Bob33 on August 09, 2015, 08:15:16 AM
The rds keyhole at 100yrds.That would be enough for me to choose a different load.
Post by: eastcoastguy on August 09, 2015, 08:58:46 AM
Post by: bobcat on August 09, 2015, 09:15:56 AM
(https://hunting-washington.com/smf/proxy.php?request=http%3A%2F%2Fimages.tapatalk-cdn.com%2F15%2F08%2F09%2F603910566edac1a7c57b63baef147524.jpg&hash=6905cf6d98989bdae1f3969b9709b91c508ef1ab)
Post by: eastcoastguy on August 09, 2015, 09:28:55 AM
Post by: bobcat on August 09, 2015, 09:34:34 AM
So basically what you're getting is one hole groups. That's what I would call it.
Post by: fastdam on August 09, 2015, 12:13:08 PM
Post by: eastcoastguy on August 09, 2015, 12:19:20 PM
Post by: Bob33 on August 09, 2015, 12:20:55 PM
Ahh nope they dont. The 2nd hole is touching the first. Both straight it, guess we all use different terms. Key holing to me is when the 2nd rd almost makes it through the first hole but makes the hole a hair bigger on the side it hits. If that makes sense. Sorry for the confusionhttp://hunting.about.com/od/guns/g/definition-of-keyhole-bullet-keyholing.htm
Post by: 2labs on August 09, 2015, 12:32:58 PM
Any recommendations? I want a hard hitting bullet. Around the 140 to 150g range
Ttsx or tsx or maybe the good ole partition.
Post by: fastdam on August 09, 2015, 02:22:22 PM
Post by: Rich_S on August 09, 2015, 02:58:33 PM
If I were loading my own, I would start by making sure my chamber is clean and relatively dry. It shouldn't be wet with oil. I would check the seated length of the bullet regards to the start of the rifling. If your chamber puts the bullet in contact with the rifling, that can lead to overpressure and a sticky bolt. Next I would get a chamber cast on your rifle to see if it is within standards. If it's a bit short, the case length could be causing problems. Either trim the cases or get the chamber reamed to specs.
Is the bolt difficult to rotate or hard to pull back? Two different symptoms with different causes. So much fun to diagnose and finally cure. The latest problems I've had were with Ruger single-actions. Teo of them were with .30 carbine revolvers. Both of them had chambers which were right at minimum length. Trimming the cartridges a bit shorter than SAAMI standards cured the problem, but the next owner might find the same thing if he shoots factory ammo. The third problem child is a Ruger Hawkeye single-shot pistol in .256 Win Mag. This turned out to be both a short and tight chamber. Since I alter .357 mag cases to .256 win mag, I was able to shorten them and squeeze them down. I don't shoot factory ammo because it's mostly out of production or custom-made and very expensive. What I've got is for display only.
You probably don't need another hobby so stay away from reloading. You'll never save a dime (in the long run) and it's addicting. :rolleyes:
Post by: 300rum on August 09, 2015, 07:28:24 PM
Out to 400 yards or so (farther really) the bullet that you use hunting doesn't mean a whole lot out of the tried and tested big game bullets. Accuracy is and always will be king. Since your bullets are touching at 100 yards, you have solved the accuracy issue (the most important), that is plenty accurate, so you you want to keep this ammo if at all possible. What we need to find out is if you are on the edge of over pressure. If there isn't any primer flow and maybe just some flattening, that is fine, I'll take that. If you can't get your bolt open, that's a problem.....
Again,is your bolt just a tad hard to open or do you have to beat on it to get it open? If it is just a tad stiff and there isn't primer flow, stay with the load. The load is telling you that it is on the edge of overpressure and you are getting about all you can out of it. A Chrono would help you solve this too....