Ok Guys I need your input, I have a SA M1A (STD) and I have done a few things to it over the last few months trying to wring every bit of accuracy out of it, here is the boring stuff
LC Mil-Surp brass (various years)
All sized to 1.628" and trimmed to 2.007"
41.5 gr of IMR 4895
WLR primer
Nosler 168 CC with a OAL of 2.255" (Base to ogive)
The rifle itself is in a STD fiberglass stock and has had the GC shimmed and the GC piston is a Sadlak Tin along with a Sadlak Op rod spring guide, also I have relived the stock some near the ferrule as there was some rubbing and I put some brass shim stock (.015") between the trigger group and stock to increase lockup and I also installed a Sadlak alum mount with a Burris Fullfield 2 3x9 scope.
Everything that has been suggested to do from you guys in the past has improved accuracy, the only thing I have not done is trim the handgard (no real sure on what I need to do their) but any way I went to the range today with 25 hand trickled loads and 25 that were just cranked off of my 550, the latter loads vary in weight due to the powder and the way the hopper cyles the powder if I were guessing I would say +/- .1-.2, so I started off running a few foulers into the berm like always and then started getting serious
All shots were fired from 100yrds with front and rear bags and the first 5 were running about 2.5-3" groups and the next 3-4 sets of 5 shot groups did about the same regardless of being hand trickled or not so I figured ok that's the best I am gonna get so I continued to fire and set my zero and as I did the groups started getting smaller and smaller and by the time I had about 25-30 down range I was getting 1.5-2.0" groups and finished that way, so my question is why does it take that long to settle down ? it was suggested to me to leave the barrel dirty but I have never done that
I am still very new to the M1A platform and still have so much to learn but for the life of me I can't figure this out and my cleaning is not what I would consider extensive all I usually do is pull 3-4 soaked patches of Hoppes 9 down the barrel then a few dry followed by light oil and I do pull the GC piston and clean as well every outing regardless of how many or few rounds fired.
Thanks
Sorry for being long winded MCORPS1
LC Mil-Surp brass (various years)
All sized to 1.628" and trimmed to 2.007"
41.5 gr of IMR 4895
WLR primer
Nosler 168 CC with a OAL of 2.255" (Base to ogive)
The rifle itself is in a STD fiberglass stock and has had the GC shimmed and the GC piston is a Sadlak Tin along with a Sadlak Op rod spring guide, also I have relived the stock some near the ferrule as there was some rubbing and I put some brass shim stock (.015") between the trigger group and stock to increase lockup and I also installed a Sadlak alum mount with a Burris Fullfield 2 3x9 scope.
Everything that has been suggested to do from you guys in the past has improved accuracy, the only thing I have not done is trim the handgard (no real sure on what I need to do their) but any way I went to the range today with 25 hand trickled loads and 25 that were just cranked off of my 550, the latter loads vary in weight due to the powder and the way the hopper cyles the powder if I were guessing I would say +/- .1-.2, so I started off running a few foulers into the berm like always and then started getting serious
All shots were fired from 100yrds with front and rear bags and the first 5 were running about 2.5-3" groups and the next 3-4 sets of 5 shot groups did about the same regardless of being hand trickled or not so I figured ok that's the best I am gonna get so I continued to fire and set my zero and as I did the groups started getting smaller and smaller and by the time I had about 25-30 down range I was getting 1.5-2.0" groups and finished that way, so my question is why does it take that long to settle down ? it was suggested to me to leave the barrel dirty but I have never done that
I am still very new to the M1A platform and still have so much to learn but for the life of me I can't figure this out and my cleaning is not what I would consider extensive all I usually do is pull 3-4 soaked patches of Hoppes 9 down the barrel then a few dry followed by light oil and I do pull the GC piston and clean as well every outing regardless of how many or few rounds fired.
Thanks
Sorry for being long winded MCORPS1