timotheius
Member
- Joined
- Sep 21, 2014
- Messages
- 2
I need some help with a recent load of mine....maybe some of you can figure out what is going wrong. As you can see from the pic of my target I shot 3 groups of 4. The first group is pretty sweet. I would be thrilled if all my groups were like this. The second groups is decent, but clearly is opening up a little bit. The third group opens up a lot. What is causing this? Have I worked up a load that it too tempermental?
My gun is a Tikka T3 light in .243. I added an aftermarket Bell and Carlson stock with a full length aluminum bedding block. The barrel is free floated. The load is 100 grain Sierra pro hunter bullet, Hornady Brass, fire formed and neck sized with a lee collet die, 35.6 grains of IMR-4064 powder, Winchester primers.
My gut feeling is that this may be caused by barrel heating? The Tikka T3 light is a light hunting barrel. But will a hunting rifle open up groups like this after only 8 shots? I didn't shoot them all back to back to back. I did wait a few minutes between groups. I'd say these 12 shots took about 20-30 minutes to shoot. Am I seeing the groups open up as the barrel warms up?
My gun is a Tikka T3 light in .243. I added an aftermarket Bell and Carlson stock with a full length aluminum bedding block. The barrel is free floated. The load is 100 grain Sierra pro hunter bullet, Hornady Brass, fire formed and neck sized with a lee collet die, 35.6 grains of IMR-4064 powder, Winchester primers.
My gut feeling is that this may be caused by barrel heating? The Tikka T3 light is a light hunting barrel. But will a hunting rifle open up groups like this after only 8 shots? I didn't shoot them all back to back to back. I did wait a few minutes between groups. I'd say these 12 shots took about 20-30 minutes to shoot. Am I seeing the groups open up as the barrel warms up?