Post by secondbarrel on Feb 14, 2022 9:04:44 GMT -5
Long time 270 Winchester deer hunter. I’ve used one load my whole life, a 130 grain traditionally constructed (exposed lead in a non-polymer tip spritzer) quality bullet from one of the major manufacturers, moving at 3,000 f/s, and always a quartering away shot or broadside shot through lungs. If I hit a far side leg/scapula or part of the heart, it was not intentional. Always reliable and tracking distance less than thirty yards. I’m very happy to stay the course for what remains of my hunting years. But I want to understand a bit about the alternate notion of high SD bullets at moderate speeds and the apparent legacy of great performance with cartridges and bullets that fit the equation ( basically this is simply heavy-for-caliber combinations). An article on how the 7x 57 fits this description with its heaviest bullet options, is in the 1991 G&A and got me interested on a wintry morning. I don’t have any texts on the technical topics related to hunting, in my sporting library and the aforementioned article does not go in to any detail on;
Why is SD so useful?
How is shot placement affected when one is to employ the high SD concept?
How specifically does bullet construction play a role when using this concept?
What are impact velocity targets compared to the established velocity guidelines when employing the “high velocity, violent expansion, moderate weight” philosophy?
Do manufacturers construct bullets differently as you get heavier in the same caliber, because they know that you are adhering to this concept when you buy the heavyweights in a particular caliber, or are there different constructions available in the same weight and are they identified for one or the other philosophy?
So I am asking in a long-winded way for recommendations on reading material to keep me busy at least until the ground thaws, in which real hunters/guides as well as perhaps bullet manufacturers give a comprehensive treatise on this subject. I’m honestly not interested in the “I’ve used one-hundred and sixty’s in the 264 WM for twenty years and everything has dropped in its tracks.” There are plenty of those types of responses.
I’ve extracted everything that is available in all of the reloading manuals. I am looking for additional reading so that I can be a better hunter and reloader by knowing how to handle imperfect presentations and ranges and whether perhaps there are better combinations of bullet construction /weight/velocity ( like this high SD/moderate velocity concept that interests me now). Up until now I’ve passed on all but the perfect presentation within a narrow range of distances because I do not know enough about this topic and therefore prefer to err on the side of being the most humane hunter that I can be with my limited knowledge.
Thanks for your patience. Looking forward to your recommendations.
Ed
Why is SD so useful?
How is shot placement affected when one is to employ the high SD concept?
How specifically does bullet construction play a role when using this concept?
What are impact velocity targets compared to the established velocity guidelines when employing the “high velocity, violent expansion, moderate weight” philosophy?
Do manufacturers construct bullets differently as you get heavier in the same caliber, because they know that you are adhering to this concept when you buy the heavyweights in a particular caliber, or are there different constructions available in the same weight and are they identified for one or the other philosophy?
So I am asking in a long-winded way for recommendations on reading material to keep me busy at least until the ground thaws, in which real hunters/guides as well as perhaps bullet manufacturers give a comprehensive treatise on this subject. I’m honestly not interested in the “I’ve used one-hundred and sixty’s in the 264 WM for twenty years and everything has dropped in its tracks.” There are plenty of those types of responses.
I’ve extracted everything that is available in all of the reloading manuals. I am looking for additional reading so that I can be a better hunter and reloader by knowing how to handle imperfect presentations and ranges and whether perhaps there are better combinations of bullet construction /weight/velocity ( like this high SD/moderate velocity concept that interests me now). Up until now I’ve passed on all but the perfect presentation within a narrow range of distances because I do not know enough about this topic and therefore prefer to err on the side of being the most humane hunter that I can be with my limited knowledge.
Thanks for your patience. Looking forward to your recommendations.
Ed