Originally Posted by
Sheridan
2 points;
Ok - so it's new, maybe needs a 100 rounds down the tube before it shoots ??
Second, maybe try some less expensive ammo - you might just get lucky and your gun really like the cheap stuff ! :-)
Just read your last post again - what's your twist rate & what weight bullets are you using ?
If your bullets are too heavy for your twist rate that would explain why your groups look so good at 100 yards, but you can't hold sub MOA groups at 300 yards.
Where's Ridge Runner when you need him ??? :-)
I shot cheap stuff thru it at first and it wasn't bad but Hornady gave me sub-moa groups at 100 so I figured it was best to stay with them. The rate of twist in my barrel is 1:10" and I am shooting
140gr. hornady SST bullets
47gr. of imr4350
magnum primers (CCI)
Total cartridge length of 3.511" (same as hornady factory round)
I was going to start playing with the length of the cartridge to see if I could improve the accuracy.
Originally Posted by
emtrescue6
The twist rate on the .270 WIN in the Tikka's is 1:10"...so bullet weight shouldn't be the problem here. As Sheridan mentions though, I would also recommend continuing to try different loads and bullet weights. My Tikka in 270 WSM shoots real well, but I had a couple early loads it did not like. My .270 WIN is an older Remmy 700 BDL and I provided the load I have had the best luck in it, which produces MOA groups.
One thing to consider...not picking on you, but just putting it out there. Just because you can produce good groups @ 100 doesn't mean you'll be able to duplicate that performance out to 300 with a new gun immediately. It takes time with a new rifle to develop accuracy the further out you shoot, even with a leadsled. It may also just need some good ole break in time. Not every rifle shoots like a dream out of the box, may take 100 rounds or more to get there. Did you follow one of the well recommended barrel break in procedures?
I broke the gun in by cleaning it all first. Then shot 1 round cleaned the barrel then shot another cleaned and repeated for the first 5 rounds. Then went and shot 5 rounds thru it then cleaned it. Repeated last. Then went home to give it 1 more cleaning before putting away.
The whole time I was allowing the barrel to cool between shots and cleaning.
My only thought was maybe the barrel was leading up a little. Is hoppes #9 a lead solvent (label is old and I can't read it?) I have some other stuff that is supposed to be for cleaning out copper and lead I might try and see how it shoots.