Need HELP with my 6.5x55 Encore!!!!
Put a pot on........this is gonna be long! (Deep Breath) Ok....so I always wanted a 6.5x55 swede. I decided on buying a barrel for my TC Encore to keep things simple and because I DO love shooting the Encores. I bought a barrel from MGM (match grade machine) 25", heavy barrel.....just beautiful. I worked up loads with three different powders (RL22, IMR 4350 and H4198), two bullets (Hornady 140gr interlock and 139 SST). To shorten the story, I finally found that the gun seemed to liek the 4350 with the flat base bullets! Great! I shot 4 loads of IMR4350 41.5,41.7,41.4 and 42 grs. They all shot really well! One shot about 1.5" but three shot around and inch!! YEAH! well, that was about 3 or 4 weeks ago, I was happy.....I found the powder/bullet combo now ill just tweak it. So, My dad loads 5 each at 41.5, 42 and 43grs, OAL 3.025" This was the starting OAL. i just got back from the range and I am SO FRUSTRATED!!!!
Heres what happened: I shot 5 shots with the one I knew to be very good, the 41.5gr. The first shot was HIGH, The second came down at lkeast 1.5", the 3,4,5th shots came down another inch and were about a 2" group!!! YUCK! Shot the other two loads...........SAME THING! First shot high (higher because it was a hotter load), 2'nd shot came down and the 3,4,5'th shots were actually pretty nice although I didnt go up to the target , Id say an inch maybe 1.25". third load 43grs, same thing first shot up high and I shot another two and they were about 2" lower and actually grouped.
So, the gun is "stringing" or whatever you want to call it TODAY!! Today? NOT the last time I shot it, not at all, it shot all the shots in the same area, some good groups others poorly but all in the same area. TODAY......it was doing the above!!!!
SO, what changed???? WHAT CHANGED????? OAL was the same, same powder, bullet,etc. Heres what changed. The last time I shot, it was a COOLER (maybe 60degrees), dryer (no humidity) day........TODAY was almost 80 and very very humid this evening!!! COULD THIS BE THE CULPRIT???? Could it be something with my plastic encore stock? I didnt tighten or loosen anything, all the same. I am cleaning barrel between every 5 shots. The heavy barrel felt MUCH HOTTER today!
I know the barrel shoots good because Id finally found the load and NOW? I dont know what to do?????