260 Rem Range Report

shoots_5

Handloader
May 15, 2009
811
12
I couldn't stand it any longer and had to go run some rounds through my new rifle. As per my usual luck, it was a dry day until I got to my in-laws place and dropped my wife and kid off with them and as I walked out to the truck to head up to go shoot, it started raining. I drove up to where I normally shoot and sat in the truck preparing some targets for awhile hoping the rain would pass....it started to rain harder. Finally I said screw it and got set up to shoot. I was rather annoyed that I couldn't chronograph the loads though due to the rain.

It took me 5 rounds to get it sighted in well enough to do some testing. Now let me start by saying that I am not a great group shooter, and as the day went on my ability behind the gun went down the more miserable and wet I got. I think the rifle is capable of much more than what I demonstrated with it for this trip.

After firing the first 5 to sight in I cleaned the barrel and started shooting some groups. First up was the 140 Amax with H4831SC. I started at 45 grains and worked up to 46.5 grains with absolutely zero pressure signs. 46.5 is a pretty compressed load though and didn't give me the type of velocity I was hoping to attain so I think from my initial testing that H4350 is going to be a better choice of powder. If I could fit more powder in the case I'd keep going with the 4831 but I can't seat the bullet out more than .01" without being jammed, so I'm out of capacity. Scottie, you were spot on on that one!

First 3 groups out of the rifle. Group A includes a fouler as well. All 5 shot groups. Group sizes measured center to center.


Also if you'll notice the OAL changed slightly between the loads. I had set the seater up on the first load and measured each round from that series and they were all the same so I left it alone and kept loading. Well, due to what I'm assuming is resistance from the compressed load, as I went up in charge the bullet was seated out a little farther. My bad for not checking each loading...lesson learned.

After firing the first 3 groups I stopped and cleaned the barrel again and hung a new target finishing up the Amax and moving on to the Berger 140 Target VLD still with H4831SC working up from 45.5-46.5 grains. The really low shot on Group A is the fouler shot after cleaning.


This was an interesting group....not sure if it was the load or me that walked the rounds out to the right. I think I need to try jamming the VLD's. They seemed all over the place. Oh, and the rain finally stopped for the most part so I got the chronograph quickly set up and was of course disappointed by the results.


Next up was the 140 Amax with H4350. I only loaded 3 rounds each at 42.7, 43, 43.3. Velocity is showing to be more promising and had zero pressure signs. At this point though I was pretty darn cold and I think the groups opened up more due to me than the load. I need to do some more testing focused on this combo and preferably from a legit shooting bench.


And a few pics of my setup.


Looking at the target down the fire trail.





A few thoughts in general on the rifle. The barrel cleans up amazingly quick! Not much elbow grease needed at all. Still getting used to the Jewell trigger a bit. I might actually raise the pull weight slightly. I left it at the #1 setting from the factory and I think it may be a tad light for my preference. With the muzzle brake on there from Nathan, the rifle barely even wiggles...it's a ton of fun to shoot! I'm hoping to get some loading done today and get back out on Monday to do some more testing with H4350. Overall I'm pleased with the rifles first outing, not as pleased with my shooting, but oh well, there's a reason I have no interest in shooting benchrest!

Thanks for looking.

Tim
 
Tim,

The rifle will deliver some amazing groups. Those initial groups have to be very encouraging for you. Your targets weathered the rain pretty well. Great potential already.
 
Looks like a shooter.
That is one fine looking rig.

JD338
 
Thanks. Mike, I taped a little overhang over the target to try and keep them dry. Should be a shooter. I'm anxious to get a load dialed in and start stretching it's legs a bit.
 
Tim,

I too have a Jewell on my 280AI. Factory set at 1-1.5 lbs. It took me a while to get used to. Something I was doing initially that I didn't realize at the time was with such a wonderfully light and crisp trigger I would just place the tip of my finger on the edge of the trigger. This caused some horizontal stringing by me not the rifle. I did a lot of dry firing with my finger completely over the trigger until I became comfortable with it my groups went from consistent 1/2 MOA to sub .1. By doing this I think its helped my trigger control on all my rifles.
 
Gotta agree with Jake on the finger position. I use Jewell BR triggers for my F-class rifles set at 6 oz. It is a matter of getting used to them through dry firing. The Jewell on the 6.5X47 is a standard HVRT set at 1 lb and feels heavy after shooting a BR trigger. Consistent thumb and trigger position is important just like your cheek weld and breathing. Dry fire the rifle a few times before you put a loaded round into the chamber next time you go to the range and see if that helps with the stringing.
 
Interesting about the trigger... That is the same basic trigger and pull weight that I want to get for my .204...
 
There's no doubt that gun will shoot well Tim, you should be happy with it. Looking forward to seeing how it shoots with H 4350.
 
Very nice Tim.

I am sure you will have it all together soon.
 
Those A-Max sure look like they are wanting to shoot for you. Looks like you are going to have one fine shooting rifle.
 
Thanks guys. Got the day off work today and forecast is dry with some sun breaks so I'm about to head down to the farm to go do some more testing. I've got some more amax's progressively loaded up with H4350 and the same for the Berger's but have them jammed this time. I'm hoping to find an accurate load somewhere around 2750fps. I'll try and get a report up this evening after I get back.

And thanks for the advice on the trigger and dry firing. Planning on spending some time doing that today between shots. If nothing else it will give me something to do while waiting for the barrel to cool!
 
Yeah, should be a pretty good day to shoot, assuming the winds don't kick up too much.

When I get current with my dues at Tri County, you will have a standing invite to shoot together any time the scheduling works out...
 
Tim, that is a good looking rifle you have and once you tweak those loads some it will be a nail pounder :wink:.
Look forward to a dry :) range reports with photos :wink:

Blessings,
Dan
 
Tim,
That rifle is a real shooter. You have some really good groups there.

Don
 
Great shooting Tim. Seems like H4350 is a good one. I would look at RL19 as well, might gain a little extra speed over H4350.

Either way, that rifle is very nice buddy and looks like it'll drill bugholes!
 
Thanks for the offer BK, I'll take you up on it if it works out! I'll let you know next time I'm planning on heading down to the farm to go shoot as well and you can come ring some steel with me if you're able to make it.

It turned out to be a great day of shooting for me! The weather was a little more suspect than I had hoped for as it was pretty fogged in, but I could see 100 yards and there was little to no wind so I didn't really care!

I worked up some loads through 44.2 grains of H4350 with the 140 Amax thinking that I would certainly hit some pressure signs by then....but I have yet to find any pressure signs in any of the loads I've produced to date with this rifle! The good news is I think I've about got it dialed in....
All 3 shot groups

I may play around with this load in .1 grain increments just to see where the middle of this accuracy node is, but it doesn't get much better than that! Very happy with the accuracy and right about where I wanted to be with velocity. And hopefully this won't be a hard load on the brass either. Time will tell. I may also play with using different primers with this one as well just to see how it affects it and maybe even lower the Sd's even more.

I also worked up some loads with the Berger 140 target VLD's with H4350 through 43.6 grains. I didn't work them as high because I had them jammed into the lands so I was afraid I would see pressure signs earlier. I was again wrong.... They shot like crap with no groups under an inch until all of a sudden as I shot the last loading of 43.6 thinking I was basically just burning powder to burn powder it turned in this group!

There may be hope for these yet....I'll probably explore these again with some additional charge and see what happens.

Overall I was very pleased with these loads! One thing of interest that caught my eye was that as my velocity increased my groups POI actually lowered on the target...I thought that was pretty odd as I would expect an increase in velocity to raise the POI. Any thoughts on this?

After putting the 260 away I got out the 338 Lapua to verify my zero as I hadn't shot it in awhile and I have a damage control cow tag for back home and I'll be home for Christmas. I would have had a group in the .1's had I not mashed the trigger on the last shot! :evil: First 2 were same hole at 12 o'clock...

Good enough to hunt elk I suppose.... :wink:

Overall a very satisfying day! Now to load up some quantity of these 2 loads and shoot them at 300-500 yards or so and see how they group.

And I may try RL-17 at some point, but only if I get the tinkering bug or if for some reason this Amax load turns out to not perform as well as down range. Can't wait to get my hands on some of those 129 grain ALR's!!! I should be able to get close to 3000fps out of them which would make them an incredibly flat shooting round!

Also, I had the chronograph set up at 15' from the muzzle. Anyone know how to calculate or at least an educated guess as to how much of a difference that is in velocity from there to the muzzle? I know it's not much but 15fps can make a difference when you get way down range in your calculations....

Thanks,
Tim
 
Good shooting I wouldn't mess with it at all. Those A-Max's are awesome. It's funny how things work sometimes. How did you get along with the trigger today?
 
nvbroncrider":1567uy8x said:
Good shooting I wouldn't mess with it at all. Those A-Max's are awesome. It's funny how things work sometimes. How did you get along with the trigger today?

Much better! I spent a good bit of time dry firing and watching the cross hairs making sure I wasn't inputting any unwanted motion with my trigger pull and follow through. Made a big difference and the groups showed the improvement!
 
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