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Posted: 10/6/2009 8:53:35 AM EDT
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i have a nylon / padded check rest on my scoped M1A,
im wondering if i should switch to a leather strap on pad, to make a more solid cheek rest, so my parallax is exactly the same everytime ?? |
I like my desert warrior, its always there.
don't ask why I need it, I think my head is deformed.... 
Desert warrior link |
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well, as you all know from my trial and error threads i have fixed my one issue with my rifle- the fact that it dropped WAY too low of POI at 220 yards,
lots of lock-tite on the scope mount bolts, etc. now, i have the other issue. every time i shoot a new group, its always in a different POI. itll be in the bullseye, change targets, its 2" right. change targets. its 1" low. change targets, its 1" high. so i took the synthetic stock off, put the original factory wood stock back on. the random changes in POI werent as drastic. well, i think im going to scrap the soft check rest and get a solid one, or leather. i wonder if the soft one allows my cheek to sink in deeper or slide. the funny thing is though, is im getting 1/2 " groups each set......... just a different POI each time i get on the bench. |
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Quoted:
well, as you all know from my trial and error threads i have fixed my one issue with my rifle- the fact that it dropped WAY too low of POI at 220 yards, lots of lock-tite on the scope mount bolts, etc. now, i have the other issue. every time i shoot a new group, its always in a different POI. itll be in the bullseye, change targets, its 2" right. change targets. its 1" low. change targets, its 1" high. so i took the synthetic stock off, put the original factory wood stock back on. the random changes in POI werent as drastic. well, i think im going to scrap the soft check rest and get a solid one, or leather. i wonder if the soft one allows my cheek to sink in deeper or slide. the funny thing is though, is im getting 1/2 " groups each set......... just a different POI each time i get on the bench. check your rings, mount etc. are you using the same load each time? also, if you are set up diffrent each time, it might throw the shot(s) off...you might move diffrent or something of that nature( just a guess/idea) if oyu clean/remove your stockon your rifle before each time, or remove the mount those might have some effect im sure someone on here knows for sure what the deal is...just throwing out ideas |
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Quoted:
Quoted:
well, as you all know from my trial and error threads i have fixed my one issue with my rifle- the fact that it dropped WAY too low of POI at 220 yards, lots of lock-tite on the scope mount bolts, etc. now, i have the other issue. every time i shoot a new group, its always in a different POI. itll be in the bullseye, change targets, its 2" right. change targets. its 1" low. change targets, its 1" high. so i took the synthetic stock off, put the original factory wood stock back on. the random changes in POI werent as drastic. well, i think im going to scrap the soft check rest and get a solid one, or leather. i wonder if the soft one allows my cheek to sink in deeper or slide. the funny thing is though, is im getting 1/2 " groups each set......... just a different POI each time i get on the bench. check your rings, mount etc. double checked them at the range. with an allen wrench. they have not moved. are you using the same load each time? yes also, if you are set up diffrent each time, it might throw the shot(s) off...you might move diffrent or something of that nature( just a guess/idea) if oyu clean/remove your stockon your rifle before each time, or remove the mount those might have some effect i do not remove the stock for cleaning, heck, i dont remove it at all unless it absolutely has to come off im sure someone on here knows for sure what the deal is...just throwing out ideas |
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i dont think i want one of the kydex / plastic ones. i dont want to drill into my stock, and i am a lefty, so if i set it up for a left handed shooter, and let a righty try my rifle, they would have an adjustment knob sticking them in the cheek.
ETA- yes, i am a pain in the ass when it comes to shopping / selections. |
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As far as groups moving around,
don't clean your bore so much same ammo leave your stock in place (don't take off) resting the barrel on the bags and not the stock Bi-pod attached to gas cylinder / barrel 1/2 MOA out of a M1A thats good shooting. even on the bags. what is your set up???? |
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Quoted:
As far as groups moving around, don't clean your bore so much i only clean it about 1-2 times a year same ammo - yeah. but it changes POI with the same handloads. and i handload, so the ammo is more consistent. leave your stock in place (don't take off) again, i only take this off, when absolutely necessary, not even for cleaning resting the barrel on the bags and not the stock - i use sandbags, under the front sling mount, NEVER on the barrel Bipod attached to barrel - no bipod at all 1/2 MOA out of a M1A thats good shooting. even on the bags. what is your set up???? Springfield M1A standard, USGI parts, polished trigger, sadlak spring guide, unitized gas system, Smith Enterprises scope mount, Leupold QD rings, and a Leupold 4.5-14X40 VX-III i just switched it back to the wood stock 
this was the first 3, then adjusted down a few clicks. this was A BAD DAY at the range, i have tighter groups on many occasions 
my typical GOOD day 
meh, whatever. 
different day, different load. Varget instead of IMR4895 
the EX shooting it 
just for shits and giggles, heres one of my AR15s 
100 yards 
sorry i was on a roll with the photobucket links. i might just say piss on it, and run with NO cheek rest at all. maybe just a piece of no-slip tape on one particular spot where my cheek / eye relief is perfect, so i line my cheek up with that tape everytime |
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Usually the cause for a nice group that moves location from one target to another is that your eye is not in the same spot behind the scope (rear sight) for each group.
The same thing happened to me at the Appleseed I attended in Sept. 2006. I'll never forget the instructor saying, "Hey, nice group, any idea why it isn't where you want it to be?" At the time I had no idea and it was frustrating. I attended one of the RBCs (Rifleman's Boot Camp) at Ramseur, NC in Feb. 2007 and got it straight. After that I had the nice groups where I wanted them on the target. If your eye is not in the same spot everytime (cheekweld changes slightly during position change or target transition) then the group will move (if you are consitent for that group) or the group is large, not your problem (because the cheekweld changes during the group). Shooting from the bench is kind of tough for some folks to be comfortable and consistent (yeah I know, some ranges only allow shooting from a bench). Try something for me. Set your rifle up on the bench, sight in on your target, when you're satisfied the cross hairs are where you want them - close your eyes and take a breath or two and then open your eyes back up. Are the cross hairs still on the same spot? If not, you are "muscling" the sights onto the target and your body is not relaxed as you take the shots. Try it, let me know what you find. Have a good one. |
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Quoted:
If not, you are "muscling" the sights onto the target and your body is not relaxed as you take the shots. Try it, let me know what you find. Have a good one. i keep a really low profile... my back is hunched over a bit and i am leaning forward to keep the rifle as low to the bench ( as few of sandbags as possible ) and it keeps the rifle from being high up / moving around alot. it feels most solid this way. i feel pretty relaxed. i put one sandbag under the butt stock to use my right hand to adjust the butt stock up and down, left or right. my right hand does NOT touch the rifle at all. the M1A is the ONLY rifle i have a scope on.... i can group the same spot everytime with iron sights. i would scrap the scope / mount on the M1A if it werent for hunting, i sure like the scope on there to draw in light for those shots when its getting dark out. |
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