Is this a "good enough load"
- Thread starter GRiNGo
- Start date
Good enough for what? Hunting, Competition, Varmints?
What is it you are shooting and at what distance?
140 Bergers tell me it's a 6.5 of some sort. 260 Rem perhaps?
What are your rifle details? Custom build? Out of the box Factory?
Looks like you could play with the seating depth on that 41.5grn load to reduce the vertical stringing.
I haven't heard of a good bedding job making a rifle shoot worse.
What is it you are shooting and at what distance?
140 Bergers tell me it's a 6.5 of some sort. 260 Rem perhaps?
What are your rifle details? Custom build? Out of the box Factory?
Looks like you could play with the seating depth on that 41.5grn load to reduce the vertical stringing.
I haven't heard of a good bedding job making a rifle shoot worse.
For your application it is shooting beautifully. I would still play with seating depth to reduce the vertical dispersion but if it is shooting 1/2" 5 shot groups consistently with that load, I would stick with it.
If you can pull the vertical out of that equation, it looks like you have 1/4 min shooter (assuming those are 100m groups).
What velocity are you getting with the 41.5grn load with the RL 19?
If you can pull the vertical out of that equation, it looks like you have 1/4 min shooter (assuming those are 100m groups).
What velocity are you getting with the 41.5grn load with the RL 19?
With the vertical stringing being so consistent, as was mentioned above, I think I would check the bearing surfaces on the bolt lugs before anything else.
That load looks pretty decent and "Bergers" have very consistent jackets so look some other place. The over all dispersion is about the same other than the vertical that's why I don't suspect bedding problems or scope mounts. But, that being said, I've been wrong before and will be again.
That load looks pretty decent and "Bergers" have very consistent jackets so look some other place. The over all dispersion is about the same other than the vertical that's why I don't suspect bedding problems or scope mounts. But, that being said, I've been wrong before and will be again.
Ya, it was at 100 meters. I have not tried any other seating depths, but will next trip to the range. I will also take a crony with me next trip. I did not go any longer because I was at the end of the mag length, but if something longer works I can by a 270 magazine and use it. Also this was the first powder I tried because I had 3 lbs on hand, I do have 1 lb of H4350, and this is what a lot of people seen to use with 260.
OAL to the lands is 3.00 and these were all 2.82.
What to you do with the bolt lugs, polish them?
The last 2 groups labled Calmer day the vertical did seem to start at the bottom and work up with the excetion of the shot to the right on target 1 which was the 5th shot and likly just me.
OAL to the lands is 3.00 and these were all 2.82.
What to you do with the bolt lugs, polish them?
The last 2 groups labled Calmer day the vertical did seem to start at the bottom and work up with the excetion of the shot to the right on target 1 which was the 5th shot and likly just me.
In my load development process, at this point I would load up 10 each of 41.5 and 40.5 and group them as I intend to shoot them.
For example: if hunting big game or slow target shooting I would fire one, let barrel cool for 5mins shoot another. If doing something where shots are coming fast, I would shoot it sequentially.
I then have a better idea that the initial consistency displayed wasn't fluke and is repeatable.
The whole time I run over the chrony. What I'm looking for is low overall deviation in muzzle velocity throughout the string and low standard deviation.
For example: if hunting big game or slow target shooting I would fire one, let barrel cool for 5mins shoot another. If doing something where shots are coming fast, I would shoot it sequentially.
I then have a better idea that the initial consistency displayed wasn't fluke and is repeatable.
The whole time I run over the chrony. What I'm looking for is low overall deviation in muzzle velocity throughout the string and low standard deviation.
I've haven't heard of many people bedding a Tikka or read on the net of anyone doing it. The only person that made a write up on CGN that did to my knowledge is here:
http://www.canadiangunnutz.com/forum/showthread.php?t=298966
I would be very interested in the results and how it would look like.
