How interchangeable is load data between a 68gr BTHP like the Hornady 68gr Match bullet, and a 69gr BTHP like the Sierra 69gr Matchking?
I know there is some differences in the bullet profile and overall length of the bullet. Is that difference big enough to make interchanging load data with the same powder between the two unsafe?
Obviously powder is scarce, but I have Norma 201. There is load data available for both the 69 gr Matchking and the Hornady 68gr Match, but the Hornady load data has a wider range of minimum to maximum charge. Is it safe to use the load data published for the 68 gr Hornady bullet with a 69gr Matchking bullet and still use the Matchking overall case length?
Thanks is advance for your advice!
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