Long range for beginners

[Magnum_Willys]

Using Leupold thread-on flipups.  Work pretty well but lil magnets holding them closed fall out it appears. Lost some on a couple. Need to callem and glue in better

[Oh Mah]

I just asked this on another thread but since the two are the same subject i want to ask the shooters that know on here also.

I have an aluminum bedded Bell and Carlson tactical stock,.300 rum.What would you consider to be the min. torque for the action screws.I say max is around 60 in pounds.

[jasnt]

55-60. My chassis is listed at 65 in/lbs

[Oh Mah]

Have you ever went lower to see if grouping got tighter?I'm at 40 now from 60 and groups are 1/4 in smaller consistently at 200. thanks

[jasnt]

I have not played with torque.

[Oh Mah]

Ok,Thanks jasnt. 

I am just under 1 moa as is,would like to get to 1/2.I will go down to 30 from the 40 i am at and see if it gets even better or worse from there I'll stop there if worse i will go back up to the 40.. Thanks.

[jasnt]

Ok,Thanks jasnt. 

I am just under 1 moa as is,would like to get to 1/2.I will go down to 30 from the 40 i am at and see if it gets even better or worse from there I'll stop there if worse i will go back up to the 40.. Thanks.

how much have you played with seating depth? I've never loaded for a rifle that I had to work to get half moa. But I have had to jump over .1 to get half moa. I always start with seating depth loaded to min charge. .030" intervals then find ocw then fine tune seating depth. This has been the best proses for me

[Oh Mah]

I haven't started to work up a load yet,I'm running the ammo that came with the rifle I bought from a member on here.210 grain Nosler trophy grade long range.

6 one way half a dozen the other,I want to get the rifle straight first as good as it gets then i will work up the ammo from there.

So far from him to me

Dropped the weight on the trigger from 6.5 pounds down to 1.5 pounds.(checked with dead blow hammer to make sure doesn't fire).

Added Witt machine brake.

Added Harris pivoting bipod.

Cleared the barrel channel in the stock for full clearance floating.

Lowered the torque on the action screws.

These small things so far has tightened the grouping nicely so far.I will try the set up again tomorrow if all is good then i will work up a load starting with about a .010 jump to lands.Thanks again.End of thread jack unless you all think this is a part of long range shooting you are interested in.   

[jasnt]

If you plan to shoot long range with it its no thread jack.

[Oh Mah]

I do. 

[wooltie]

The action torque spec idea is interesting.  I have a model 70 (new production) seated in a B&C medalist.  The specs say 65 ft/lbs, but I run it 50-60.  That seems to be tight enough where it doesn't feel over tight, but also doesn't come loose.

I haven't bedded the recoil lug yet.  Might do that once I figure out this reloading thing.  I started reloading at .020" off the lands, but I think these accubonds prefer a larger jump, as much as .100".  fWIW, changing seating depth over charged improved my groups, but still not where I want them, so I'm going to try 165g instead.

Finding the velocity flat spots makes sense to me for LR shooting.

[jasnt]

I do. 

you will need to tell us a little about the rifle 🍻

[yorketransport]

Have you ever went lower to see if grouping got tighter?I'm at 40 now from 60 and groups are 1/4 in smaller consistently at 200. thanks

This sounds like the bedding is bad on the stock. When you torque it down to spec the action is getting "twisted" in the bedding block causing inconsistent contact. Lowering the torque is reducing the amount of uneven contact. Every B&C stock I've had needed to be bed for best results. The only type of bedding block that I don't bed with Devcon is a true V block.

I will throw out there that if it's a 3 screw single shot action you may benefit from playing with the torque on the center action screw.

[jasnt]

Have you ever went lower to see if grouping got tighter?I'm at 40 now from 60 and groups are 1/4 in smaller consistently at 200. thanks

This sounds like the bedding is bad on the stock. When you torque it down to spec the action is getting "twisted" in the bedding block causing inconsistent contact. Lowering the torque is reducing the amount of uneven contact. Every B&C stock I've had needed to be bed for best results. The only type of bedding block that I don't bed with Devcon is a true V block.

I will throw out there that if it's a 3 screw single shot action you may benefit from playing with the torque on the center action screw.

this is more inline with torque testing I've heard of

[Jonathan_S]

The action torque spec idea is interesting.  I have a model 70 (new production) seated in a B&C medalist.  The specs say 65 ft/lbs, but I run it 50-60.  That seems to be tight enough where it doesn't feel over tight, but also doesn't come loose.

I haven't bedded the recoil lug yet.  Might do that once I figure out this reloading thing.  I started reloading at .020" off the lands, but I think these accubonds prefer a larger jump, as much as .100".  fWIW, changing seating depth over charged improved my groups, but still not where I want them, so I'm going to try 165g instead.

Finding the velocity flat spots makes sense to me for LR shooting.

I’ve only loaded .30 and .257 accubonds. In my experience the Nosler data for COAL length is fine. I couldn’t get them to zip though. Gave up and went back to Bergers.