[Philip Taylor]

I found this interesting wind chart:

Wind Drift of All Rifle Cartridges: A handy table

It turns out 350 legend is very sensitive to wind drift. At 300 yards in a 10 MPH wind, the drift is 20.9″, so at 50 yards it could be close to 3.5″. Yesterday the wind was closer to 15 mph or more. The wind was opposing my shots completely which could cause a deflection in any direction, so I am not so sure this was a good test. Wednesday I will do the 5 shot groups again due to wind forecast.

[Philip Taylor]

With a 15-20 mph headwind, I would expect maybe 1/2″ deviation at 50 yards, but maybe more likely 1/16″.

I am searching for my tool right now, so I will figure out if the barrel is properly mounted first. Last night I took my BCG apart and cleaned everything with some quickshot. After that I oiled the critical points with good old Hoppe’s gun oil. I also scrubbed my bore with a stainless steel tornado brush dipped in bench-rest copper solvent. I emptied two 5 round mags with no stove-piping.

Off and on I have been searching for my multi-tool, afterI find it, I will inspect the barrel mount and correct it. As per your suggestions, I will use a blue thread-locker and test again.

I have a basic muzzle break on it, and it is tight, I guess I should lock that on too.

Thanks for the tips.

[Philip Taylor]

Today the wind was blowing about 15 MPH opposing my shots exactly, or blowing right at me from the targets. I fired two 5-round groups of Winchester 147 Gr FMJ, and Browning 124 Gr RN FMJ from 55 yards. The Winchesters made a 5 inch group, and the Browning made a 2 1/2″ group. I now think the problem is my Anderson barrel, or possibly my BCG.

[Philip Taylor]

Okay, going to do 5 shot groups of the Winchester and Browning tomorrow.

[Philip Taylor]

Sorry Reload COAL of 2.1215″

• This reply was modified 5 months, 2 weeks ago by Philip Taylor.
• This reply was modified 5 months, 2 weeks ago by Philip Taylor.

[Philip Taylor]

Sorry, life has turned into a marathon. I did my test with the new bi-pod from 50 yards.

Factory Load Test:
Winchester FMJ 147 Gr gave a 1/2″ group with a 1″ flier.
Browning 124 Gr rn FMJ gave a group 3/4″ with a 4 inch flier.
These groups are from hole center to hole center, so you can halve them to find distance from bull at 1/4″ and 3/8″ off target.

Hand Load Test:
I used a COAL that was on my die from last attempt(2.1.15″) just to see the difference between (small rifle): Winchester #41, Federal Gold Medal #GM205M, CCI #400, and Fiocchi. Here are the results: Winchester: 2″ with 3 1/2″ flier, Federal Gold Medal: 1 1/2″ w/3″ flier, CCI:3/4″ w/2″ flier, Fiocci: 2″ w/2 1/2″ flier.

It appears the CCI primers might be the best of the lot. Every 3 shot group had a flier, so I’m not too confident that my barrel isn’t slightly defective. There is an extractor gouge sometimes, and some stove-piping with the rifle. I guess my first issue might be to solve the failures with my 350 legend.

[Philip Taylor]

I don’t have a chronograph sorry. It will be several days until I can try anything different to confirm issues. What I will do first is put a bi-pod on it to uniform my aim for every shot, and test factory ammo. After that I will load some of what I was loading with winchester primers, also CCI primers, and some Federal Gold Medal Small rifle primers.

[Philip Taylor]

I was getting MOA groups with Browning 124 Gr RN. Last week I fired Winchester FMJ, and it was pretty sloppy like 6″ group. I ordered a bipod to steady things up, so I will have to test some factory loads a bit before reloading more. I will get back to this next week sometime, thanks for the help.

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