2015-02-22
2030-2200
10F
10 mph N
Goals: Check zero with .22LR.
Environment: Early moon. Cool, with a cool breeze and hard ground with a little crunch. Stars visible but some overcast. Orion visible but couldn't find Andromeda or Cass, too close to the moon and mostly behind trees and clouds.
Equipment: .22LR, Edge, 13-27 bipod, thermal, sling, ir-laser. eotech, 3x magnifier. LRF, 3x 14 magnifier, 30K RGBW, canteen, .45 acp.
Activity: All rounds fired sitting with bipod at 20.5 inches extension. Used 3x magnifier on 14 for G01 and G02.
IR-laser
G01 - 50yds - 2rds
These were low. I tried cranking up a little. Still not sure whether I want to be zeroed at 30yds or 50yds.
After first round fired, there was an FTF. I should have unloaded run a CLP patch and a dry patch and reloaded. So a round fell on the ground. Three rounds expended.
IR-laser
G02 - 50yds - 2rds.
These were a little higher, needed to crank more.
Thermal
G03 - 30yds - 2rds.
I aimed the second one better than the first one. I think the thermal is zeroed at 30yds. I three two rounds to FTF in this group. Had to dig one out of chamber with finger nail. I was able to with no lights.
IR-laser
G04 - 30yds - 1 rds.
Good on elevation after adjustment.
Results: On the way back the moon was blinding me a bit as I had to drive pretty much into it. And it obscureed a tree line that often has critters in it. The so called "Turkey Bluff" area. So with 14s, even a new moon makes a difference. The pasture was more light up by this moon also.
Well, I'd like to get 9s every time, so will keep working this.
In addition top preparing the rifle better, I need to remember to anti-fog juice the optics. The 14s fogged a little.
==
On other fronts I took the 7.62 and .338LM rifles out in the day to resume work on validating DOPE cards, this time at 500yds (476 actual). Fired 6 rounds with 7.62 and no stove pipes. Was a little lower than I expected. But main news is that I think I found root cause of all the ejector problems. The root cause being dirty chamber. Prior to this shot I did two 2 hour kroil soakings of chamber and 80 chamber brush strokes. And I ran wet and dry patches right after returning to base. I'll also run wet and dry right before going out. So the 7.62 was the good news.
The .338LM had sticky bolt on first round and brass stuck in chamber on second round, so did RTB. I was able to get the brass out will cleaning rod. So, last weekend I had done two 2 hour kroil soakings and fired 10 rounds without issue and I thought I was good. But today issue returned. I did NOT run wet/dry patches before going out. But I've fired this rifle over the past two years and never had problem until switching to new batches of ammo recently. I have been firing Lapua/scenar factory loads only for the past 10 months, and just switched to HSM non-Lapua brass recently.
Reading a bunch of threads plenty of people have had sticky bolts and stuck cases with this rifle. I had read some of those thread before getting the rifle and i those days I attributed their issues to overly hot loads. But re-reading all that material I now think most likely problem is headspace issue. Apparently factor lapua ammo has different length than the brass and even reloading dies. And apparently my Savage was head spaced for the Lapua factory ammo. So now I have to figure out how to verify that I have headspace issue and if so figure out how to fix it. Sending back to Savage is not an option at this time as I have an event I am preparing for on 28 March 2015, so need a more local solution. Worst case, temp solution would be to spend $5 per round and get 100 more rounds of Lapua factory loads for the event. I will test with the 17 rds I have remaining of the Lapua factory ammo to verify it still works. But I need a way to find out whether I actually have a headspace problem, so trying to figure out how to do that. So the .338LM is the bad news.
BTW of the people who have had similar problems with this rifle in the past, based on reading threads, some adjusted their headspace, some got new barrels, some never had the problem!!! And some gave up. I'm thinking of switching to .300WM anyway, but I can't sell this rifle until I get it fixed to use spec ammo, not just one make of factory loads as it apparently does now. And no matter what, I really need to get at least a work around for the 28 March event.
Input welcome!