35 Whelen and TSX 225 grn's
- Thread starter JohnS
- Start date
Rembo said:
Yes, it is a very fast barrel. When I started developing loads for the rifle, I worked up to 61 gr of RL15 and got some strings that averaged 2803 fps on my Crony Delta. This was not an isolated instance and I started to doubt the chronograph. Fortunately, I friend was with me that day who had his Oehler set up. I ran a 3 shot string throught it for an average of 2802fps. Pressure signs(bolt lift, primers, etc) were normal.
The downside of this high velocity was very short case life. I had a head separation after only loading the case only three times so I backed off to 58-59 gr.
With 57 gr of RL15 and 250 gr Hornadys, my MV is 2600-2630 fps.
Some guns just shoot faster than others with the exact same loads - so they are often said to have a "fast barrel". Barrels and chambers vary - so velocities from some rifles can be much faster or much slower than the "norm". You gotta chronograph loads in order to know this, as there is no reliable way to predict a fast or slow outcome.
