Range day 6-2-13

[wisconsinteacher]

I wanted to just get out and shoot so I smacked the gong at 200 with the 25-06 and 6.5 Grendel. It was done with ease. I was hoping to shoot at 300 but I did not have a chain to hang the gong.

My other goal was to shoot the 338WM at 200 with RL19 and 210 PT. I shot 3 four shot groups and rotated how I shot the rounds down range. I also let the rifle sit for 2 minutes between shots and 5 minutes between strings. It was 60 out so it was able to cool off nicely.

74.5gr=4.3"
75.5gr=3.4" 1.7 MOA which is average for this group at 100 so it is consistent.
76.5gr=5.6"


Not the groups I was hoping for. If you would like to see targets to look for clues, I can post them up. I am going to try H4350 next I think.

 

[SJB358]

I wanted to just get out and shoot so I smacked the gong at 200 with the 25-06 and 6.5 Grendel. It was done with ease. I was hoping to shoot at 300 but I did not have a chain to hang the gong.

My other goal was to shoot the 338WM at 200 with RL19 and 210 PT. I shot 3 four shot groups and rotated how I shot the rounds down range. I also let the rifle sit for 2 minutes between shots and 5 minutes between strings. It was 60 out so it was able to cool off nicely.

74.5gr=4.3"
75.5gr=3.4" 1.7 MOA which is average for this group at 100 so it is consistent.
76.5gr=5.6"


Not the groups I was hoping for. If you would like to see targets to look for clues, I can post them up. I am going to try H4350 next I think.

Yup, I wanna see em! :lol:

I would tell you this and this is how I do it WT. I take my most accurate powder charge, and then load up 16 rounds from the MAX COAL you can fit in the gun, then reduce each set of four by .030". One of these should show more promise than the other, and you would have a spot to tweak. Some don't like as large of a jump as that, but I seem to find that "spot" faster like that and there is plenty of room to tweak when you find that node, if needed.

Don't get too disheartened, I think your actually making progress and you'll end up with a better load than you ever had.

 

[wisconsinteacher]

I think the second shot on the 74.5 target is close to a robin hood of the first shot. There is no other hole close to the target???







76.5 did have a little bit of a sticky bolt lift.

 

[FOTIS]

Not too bad!

 

[SJB358]

I think the second shot on the 74.5 target is close to a robin hood of the first shot. There is no other hole close to the target???







76.5 did have a little bit of a sticky bolt lift.

75.5 looks pretty good to me and very hopeful if you discount shot #3. I would look at doing some work with the seating depth if you want, as I bet you could shrink up that load WT.

If you have lost faith in RL19 or the 210 PT, it wouldn't be a horrible thing, but I think you are closer than you think. I would stick with it actually, as I think you'll see something pop out if you show the load some different lengths. Your powder charge looks pretty decent.

 

[wisconsinteacher]

I will take the 75.5 and play with the seating depth. I will go .03 at a time from max down. I hope to shoot again next weekend.

 

[SJB358]

Can you get anywhere near the rifling with the 210 PT WT? If you can, start .010 off and then .040, .070 and then .1" I would almost bet money something will show you where it wants to be. Then it is just up to you in order to tweak it out. Don't give up, my little 300 is finally starting to show it wants to shoot, and my groups haven't been much better than yours. Just takes time and patience. You'll nail it pretty quick I bet.

 

[wisconsinteacher]

Today's loads were all .076 off the lands. From my quick look at things, I can get to that .010 off the lands and be okay with mag length.

 

[SJB358]

Today's loads were all .076 off the lands. From my quick look at things, I can get to that .010 off the lands and be okay with mag length.

Well, you could skip the .070 increment and load the next deeper just to get a better idea. No need to shoot something you've already rung out.

 

[wisconsinteacher]

Would you still try the .01, .03 also?

 

[SJB358]

I would for sure try .010 and .040". Those seem to be sweet spots for me with PTs. With ABs, .070 and .1" seem to work better. Not written in stone just my experience with them.

 

[JD338]

I have found several accuracy nodes at .010"-.020" off the lands.

JD338

 

[wisconsinteacher]

I will load some up and try them. Do you think the OAL can be cut from 1.75" at 100 down to 1" or less?

 

[SJB358]

I think once you find the seating depth the rifle likes, you'll get consistent results everytime you shoot the rifle, if it'll drop to 1" at 100 yards, I have no idea, but I would stick with 200 yards doing the seating depth testing, just so you can look at the group shapes and layout.

 

[OU812]

I think the second shot on the 74.5 target is close to a robin hood of the first shot. There is no other hole close to the target???







76.5 did have a little bit of a sticky bolt lift.

If it were me I would be questioning why the 3rd shot is out in both of these targets. 74.5 and 75.5 both have first 2 shots almost touching but the 3rd is way out. If I had those groups this is what I would do. Fire 1 shot and let the rifle set for 15 minutes, fire 2nd shot set for 15 and fire the 3rd shot. If then the 3rd is right in there with 1 and 2 then you have issues with barrel heat or something is touching the barrel.

You're much closer than you think to having an very accurate load.

 

[CatskillCrawler]

With just one sample down the tube I would tweak my charge weights one more time before doing any OAL changes. What you do know is: You've found your max at 76.5gr and the 75.5gr load looks promising. I would load 74.8gr, 75.2gr, 75.5 gr and 75.8gr and see if you get any consistency with the 75.5gr load or a Eureka moment with any of the new loads and then start your OAL adjustments.

Just my .02¢