Think I found the load for the Sendero

[MUP]

After being all over the paper in the beginning, I finally bedded the recoil lug, but had to start over with trying to find the recipe it likes, coupled with the bullets I'd hoped I could get it to shoot. After getting a couple of decent groups with 74.5 and 75.5 gr of RL22, under 180 gr NBTs, I went back out to verify those two, and one did better than before, the 75.5 gr load. The first group from the other day was .812", 3 shot group at 100 yds, but had two in one hole virtually. Today that same load shot a 3 shot group of .567", and again 2 in 1 hole almost. I think I'm finally to the point where it'll shoot this combination better than I can hold. Now to take it and see what it'll do at some distance.

 

[EastTNHunter]

Nice, Steve!

 

[Deer Assassin]

That will work

 

[MUP]

I'm still pumped today over finally finding something it'll shoot. Bedding the recoil lug was the start of finding accuracy tho, then started all over trying to find a load recipe for it, then, still had inconsistent groupings, close one group then open up when I went to verify again, two holes touching, then a flyer. Then went to LR primers instead of mag primers and that helped consistency. Seating depth changes didn't show any improvement over the .018" off the lands I was testing at, so I'm calling it good.

 

[MUP]

Nice, Steve!

Daniel and I have been scratching our heads with this one buddy. Initially I'd have two holes touching, then a dang 2 or 3 inch flyer! What the heck?! Daniel was the one who first told me it looked like a bedding issue, so I looked into the possibility and a Gunwerks video showed that they use Remington Senderos in developing their long range rifles, and the guy in the video says since they have an aluminum bedding block that they normally just do a recoil lug bedding job on them, so that's what I did with some Devcon titanium putty. It's been a long journey, compared to the Win Model 70 WSM especially. That rifle just shot great pretty much the first time out, and after finding the most accurate load it's been a shooter. BIG relief getting this one dialed in finally.

 

[MUP]

Shot at 500 yds and got a personal best 2.625" 3 shot group today. Pretty happy for an amateur. I just need a good shooting bag setup now to be able to hold more steady.

 

[fairchaser]

Good shooting!

 

[MUP]

Here are the results from the Remington Model 700 Sendero 300 WinMag.

75.5 gr of RL22 under 180 gr NBTs, CCI LR primers and R-P brass. .501 MOA at 500 yds.

 

[MUP]

Dang it, pic is sideways. The string is horizontal.

 

[MUP]

Good shooting!

Thanks fc. Hoping to shoot more at 500 to get more comfortable reading wind and atmospheric conditions before trying for longer distances.

 

[fairchaser]

Dang it, pic is sideways. The string is horizontal.

That's a great load. The vertical spread is nil and the horizontal spread is likely wind. I would try more shots at that distance. Shooting 10 shots or even 20 will tell you a better story. A chrono would also tell you how consistent your loads are. An SD of around 10 is very good. Keep up the good shooting.

 

[MUP]

Yep, hunter0925 has offered to let me use his chronograph next time we're out there. I'm pretty hopeful that this load has a small SD with the horizontal string as shown. Wind was right to left, maybe 3-5 mph, but not steady, coming and going away.

 

[Ahuntin1]

If you still have trouble, go with heavy bullets. I think my friend solved his Remington 300wm with 230 Berger bullets

 

[MUP]

Yea, my buddy Daniel has been telling me to go heavy as well if I couldn't get it shooting the 180s. But I've been determined to get it to shoot tho. I really put some time in on this one, way more than any others so far. I've heard nothing but good about the Bergers.

 

[Huntaholic]

Looks like you found the right combo! I would have suggested trying H1000 if you haven't already but I don't think I would mess with it if I were you.

 

[MUP]

I've had numerous recommendations for using H1000 bc of the temp stability. If I could have found some I would have probably gone that route first, but for now I do plan to stay with the RL 22.