Quote:
Originally Posted by mkk41
As I have posted many times before , all SWCs are not created equal. The #410459 bullet and other true "Keith-style' bullets have a lot of the mass in that big nose and a relatively short 'shank' , which leaves lots of room for more powder in the case. Exactly why Elmer designed it this way. This is where many people run into trouble. If you use data for this bullet , and substitute any other 210-215gr bullet , which has a longer shank , (more bullet in the case = less powder space) , you run a distinct possiblity of a compressed load and dangerously high pressure.
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I agree, many people (even bullet manufacturers) think any SWC is a "Keith" bullet.
Here is a (L-R) LBT 250gr WFNGC, 220gr H&G 258 Keith, standard 215gr. SWC and a 170gr FP. It is easy to see the differences in profile and shank length. If you were to use the 20gr max load of 2400 for the 410459 with the standard 215gr SWC I can see bad things happening.