Hello guys. I have a new project that I need some advice on. I have a BRNO VZ24 in 7x57 that I bought 15 years ago. Now that I am semi-retired I have decided to try to get it to shoot. I ordered an assortment of boolits to experiment with. While I was waiting for them to arrive I loaded some 140 gr jacketed bullets over the minimum load of H4895. These clocked at 2500 fps but accuracy was very poor.
I know these rifles have a long throat and the 140 gr bullets were about 1/4" off the lands. I measured this with a tool I kluged together. Today my cast boolits arrived, an assortment from 4 different molds. They are:
Lyman 287641
Lyman 287405
Lyman 287308
Lee 285-130-R
Using my homemade tool to measure I seated the boolits to the following OAL's. This should put each round about .015" off the lands.
Lyman 287641 3.025"
Lyman 287405 2.83"
Lyman 287308 3.014"
Lee 285-130-R 2.715" (The Lee boolit is much shorter than the rest. This depth put the boolit .2" from the lands. I can only guess that the Lee boolit was designed for more modern
rifles.)
My question is do these figures look ballpark close to you guys with experience? My load on all of the rounds is 16 gr of 2400. Any help you can give me would be appreciated. I am going to the range in a couple of days to try them out.
Thanks in advance for your time.
Please see new post.