  | .338 lapua moa drops |
|

08-26-2012, 02:09 PM
|
|
Bronze Member
|
|
Join Date: May 2011
Posts: 34
|
|
|
.338 lapua moa drops
Hey guys I need some help. What are your drops in moa/yards for your .338lm shooting 300 otm's. I am having problems ejecting brass all of the sudden for the same load/primers/powder etc I have been using the whole time. The bolt closes easy and opens easy, it is just hard to get started pulling back on the bolt??? what I am wondering is if the chrono i was shooting over was way off or something else. My 950yard drop this morning was 20.5 moa out of a 28 tube. How does this moa compare to yours?? I know its not gonna be the same cause of altiude etc, just want a ball park. Is it pressure? action problems? brass problems(lapua brass on the thrid firing)?
|

08-26-2012, 05:06 PM
|
|
Silver Member
|
|
Join Date: Jan 2009
Location: Centre County, Pa
Posts: 166
|
|
|
Re: .338 lapua moa drops
There could be two problems I can think of off hand. One is are you neck sizing only or full length sizing your brass? If just neck sizing you may need to run them through a body die. Second I think you may be pushing the pressure level a bit much. What is the load you are using?
|

08-26-2012, 07:41 PM
|
|
Bronze Member
|
|
Join Date: May 2011
Posts: 34
|
|
|
Re: .338 lapua moa drops
I was using 91 grains of h1000 and just got back from trying 85 and still I little stick. I am full length sizing back to factory case deminsion
|

08-26-2012, 08:37 PM
|
|
Platinum Member
|
|
Join Date: Apr 2010
Location: Allen, TX
Posts: 2,608
|
|
|
Re: .338 lapua moa drops
That is a realistic velocity and come-up for 91 gr of h1000 starting with a 200 yd zero. ..especially at higher altitude.
If you're dialing 20.5 from a 100 yd zero, it might be a little hot.
-- richard
|

08-26-2012, 08:43 PM
|
|
Bronze Member
|
|
Join Date: May 2011
Posts: 34
|
|
|
Re: .338 lapua moa drops
Was dialing 19.75 for 950 with 91 grains. Problem is pulling the bolt back. Closes fine, opens fine but doesn't want to pull back. Read a old post about a shiny ring on the case head and maybe chamber problems but it hasn't always done this. Just started after the third firing from lapua brass
|

08-26-2012, 09:02 PM
|
|
Silver Member
|
|
Join Date: Jan 2009
Location: Centre County, Pa
Posts: 166
|
|
|
Re: .338 lapua moa drops
What rifle are you using? Is it a factory rig or custom built?
|

08-26-2012, 09:05 PM
|
|
Bronze Member
|
|
Join Date: May 2011
Posts: 34
|
|
|
Re: .338 lapua moa drops
Blue printed 700 action with a 7 hart 28"
|
  |
|
| Thread Tools |
|
|
| Display Modes |
Linear Mode
|
|
|
All times are GMT -5. The time now is 05:58 AM.