My week off cycle has finally coincided with good weather so I went to the range with my .500 A-Square Hannibal and my Oehler Model 35 chronograph. It was really cool to take a shot and hear the little printer busily chunking away printing my velocity receipt.
I was shooting the 575 grain cast, gas-checked bullets over 37.5 grains XMR-5744 for an average of 1150 fps. Recoil was next to nothing. The large shell in the middle is a 990 grain bore-rider someone gave me. I was going to shoot it too but I did not get the base under the extractor and made the mistake of closing the bolt. This rifle is made with the extractor so it will not ride up and click over the rim of a shell, the shell MUST come up out of the magazine, or you have to hold the shell down a little so the extractor will engage the rim. The end result was the bullet engaged the rifling and I could not close the bolt, so shooting over!
That old rest is one I made...oh must have been 15 years ago. Made it on my porch for about $2.50 not including the $20 I paid a buddy of mine to weld together the base. It is fully elevation and windage adjustable. Even though I could now buy the fanciest benchrest rig I can find, I still like using the one I made.
The Oehler is really sweet. The proof channel keeps things honest, and the rig itself is hard to fool. Rarely do I get non-readable shots. For the price, I hope so. I wish I had purchased this years ago.
I didn't take pix of the target. I only have a 1x Burris on top of the rifle, and with the lightweight bullets, they kind of fly around at the low velocity. I am going to add another 5 grains of powder to see if they tighten up, and also will use maybe 100 grains of IMR-7828 to fill the case and get the velocity to around 1500-1800 fps. We'll see then.
I found the dongle for my Pressure Trace so next time I go shooting I will use that to capture some traces for you folks. The charges today were so low-pressure, I couldn't even get some new A-Square brass ironed out. it was fun though.
I know you really can't see much in these pix. If you want to see 1200x1600 pix with excellent detail, go to www.hunt101.com and in the "search" bar enter "Hannibal", and my pix will come up, click on "big".