Mc Fraser
Well-Known Member
Hello All,
I have a Tikka T3 in 270 Win. I did a ladder test yesterday: 140gr Berger Classic Hunter, Nosler brass, BR-2 primer, H4831SC. Berger reloading book suggests 58gr is the max and I should get 3051 fps. Granted my barrel is 22-7/16" in length but that is almost 200 fps difference. There were no signs of pressure.
https://bergerbullets.com/pdf/270-Win-140gr.pdf
The rifle shoots 140gr Sierra SBT with the same powder 1/4MOA at 100 yds.
I couldn't seat the bullet at 3.34 as my chamber is short? I believe (99%) it was seated to 3.30, I use CBTO not COAL.
I know you want to see pictures with the shots, let's just say there where all within a 2 MOA with most of them within 1 MOA grouping at 100 yds. I just can't do long-range ladder tests, I don't have that option.
1. Based on only the information attached and above, would you give it another try or move on to another bullet/powder combo?
2. The labradar recorded a 60 fps difference between #3,4 and 5. Can that be an error? This is a purely theoretical question as I don't want to shoot a bullet at 2700 fps MV.
3. Have you seen MV speeds like this before? I am puzzled by the fact that MV is all over the place.
Thanks.
I have a Tikka T3 in 270 Win. I did a ladder test yesterday: 140gr Berger Classic Hunter, Nosler brass, BR-2 primer, H4831SC. Berger reloading book suggests 58gr is the max and I should get 3051 fps. Granted my barrel is 22-7/16" in length but that is almost 200 fps difference. There were no signs of pressure.
https://bergerbullets.com/pdf/270-Win-140gr.pdf
The rifle shoots 140gr Sierra SBT with the same powder 1/4MOA at 100 yds.
I couldn't seat the bullet at 3.34 as my chamber is short? I believe (99%) it was seated to 3.30, I use CBTO not COAL.
I know you want to see pictures with the shots, let's just say there where all within a 2 MOA with most of them within 1 MOA grouping at 100 yds. I just can't do long-range ladder tests, I don't have that option.
1. Based on only the information attached and above, would you give it another try or move on to another bullet/powder combo?
2. The labradar recorded a 60 fps difference between #3,4 and 5. Can that be an error? This is a purely theoretical question as I don't want to shoot a bullet at 2700 fps MV.
3. Have you seen MV speeds like this before? I am puzzled by the fact that MV is all over the place.
Thanks.