It was 55* this morning @ 6:30 - gotta be a good morning to go to the Rock Pit and continue the experimenting. The only problem I neglected one scientific principle - rock does cool as rapidly as other structures and it heats up rapidly when sunlight is applied - so by the time I left the rock pit @ 9:28 the temperature on the floor was 79* and rising... But, I did complete my assigned task - just wish I could have done more shooting.
I have this ULite setup to be a Colorado legal ML in that it is the same as the Western Edition but I have a 209 ignition installed. Open sights and full bore conical bullets....
Bullets... I was experimenting with four different bullets that I had knurled here at the house. I will list then in the order that I shot them and in the order I found the easiest to knurl and fit the bore...
1. Speer - 50x300 grain Deep Curl. This stubby bullet is very close to fitting without knurling but running it between two mil files and you can get a very good fit.
2. Barnes - 50x325 grain XPB. Another easy to knurl and easy to get a good fit bullet.
3. Barnes - 50x275 grain XPB. You would think the two Barnes bullets would have the same basic diameter - but not so... the 275 is slightly smaller in diameter than the 325 and as such a little more difficult to Knurl to full bore fit.
4. Bloodline - 50x325 grain DOA. Using a mil file will not get you close to good fit with these brass bullets. I have to use 'Bustard' files to get enough lift on the bullet to get the right fit.
Speaking of right fit... I am finding that you do not have to have the exact same fit with each bullet, witch is good because in the un-scientific way that I am knurling I never get them exactly the same diameter. The key is to make sure they fit snug enough to grip the lands of the bore. Gas containment is done with the sub-base.
This morning everything just worked... It was a great outing. All shots were at clay pigeons 100 yards down range. I did miss once and I am sure it was my fault because I felt the bullet loaded well.
1874 SharpShooter - I did try your open sight method - using the normal 6 O'clock hold but also putting a little air underneath it. I believe it is called a 'Sub 6 hold' It worked very well for me this morning.
Sub 6 – The sub 6 is just like the 6 O’clock hold, only there is a small line of white between the front sight and the aiming black. Many shooters have a problem determining the exact 6 O’clock position with their front sight, but by using a sub 6 or line of white they may be able to better estimate their hold.
Here is a picture composite of this mornings outing...
