Yesterday I loaded up some 6BR 30.0 gr. varget 107SMK. I used brand new Lapua brass with 205 primers. These loads just touched the lands. When going into the gun the bolt closed easy. After fireing the bolt was extreemly hard to open. There was a slight ejector mark on the head. This is the same load the smith loaded and shot for test and first targets. There are no marks on the heads of his samples he sent me to load from. Any ideas what might cause this?
stuck cases
- Thread starter ANDY5
- Start date
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Do you mean trued Rem SEVEN Hundred?
Was the smith shooting the same bullet?
How hot was the ambient temp when you shot?
What's your cartridge OAL with those bullets seated? I suspect your bullets may actually be seated down and away from the lands--but that's just a guess. Your COAL will settle that issue.
Did you expand the case necks before shooting?
Suggest you go .015" into the lands and back load to 29.3 Varget. Run that over a chron and let us know. You could have a tight bore.
Also what are you using to weigh powder? Has your scale been calibrated recently?
Did you ream flash-holes bigger?--that can give you more pressure.
Was the smith shooting the same bullet?
How hot was the ambient temp when you shot?
What's your cartridge OAL with those bullets seated? I suspect your bullets may actually be seated down and away from the lands--but that's just a guess. Your COAL will settle that issue.
Did you expand the case necks before shooting?
Suggest you go .015" into the lands and back load to 29.3 Varget. Run that over a chron and let us know. You could have a tight bore.
Also what are you using to weigh powder? Has your scale been calibrated recently?
Did you ream flash-holes bigger?--that can give you more pressure.
You may just have a slightly hotter lot of Varget. Most burn rates will vary from lot to lot, some much more than others. Only way to be ceertain is to be able to shoot his load and your load through a chrono and see if there is much of a velocity difference.
Moderator,
The rifle is a 600 Rem. trued
The smith was shooting the same bullet.
The temperature was 87 degrees 26% hum.
The oal I will have to go to the gun house to find out, I do not remember off the top of my head.
I did not expand the necks before shooting, I v-ed the neck . Why would I take this step?
I had the bullets started into the bore .015
RCBS chargemaster, yes it has been calibrated lately and compared to my 10/10 every time I use it.
I did not ream the flash holes.
CHUCKHUNTER,
i do not know the vel. the smith had, he did not chrono. the load
The rifle is a 600 Rem. trued
The smith was shooting the same bullet.
The temperature was 87 degrees 26% hum.
The oal I will have to go to the gun house to find out, I do not remember off the top of my head.
I did not expand the necks before shooting, I v-ed the neck . Why would I take this step?
I had the bullets started into the bore .015
RCBS chargemaster, yes it has been calibrated lately and compared to my 10/10 every time I use it.
I did not ream the flash holes.
CHUCKHUNTER,
i do not know the vel. the smith had, he did not chrono. the load
This may not be your problem, but in one of my 700s, difficulty in opening the bolt was caused by lack of lube on the bolt cam area. Eventually the cam surface got roughened after repeated openings, to the point where merely opening the gun was hard after firing. The telltale sign is whether it's only hard to open the bolt after firing, but easy if the bolt is opened when already cocked,i.e. not fired). If the gun is cocked, there is no force on the cam surface and friction is not felt. If the gun is fired, the cam rubs the cocking mechanism and there's lots of friction. After disassembling the bolt, the cam had to be smoothed back down with a fine stone,Dremmel for example), relubed, then all was well. You have to keep the cam greased !
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