justin22885
member
- Joined
- Nov 9, 2009
- Messages
- 2,102
so i decided afterall that i will get an AR-15, however for reliability and longevity sake im sticking to a .223/5.56 based cartridge, but im looking for an upgrade to .223 itself, poor barrier penetration, little energy at extended distances, generally a poor selection of bullets above 55 grains (almost all FMJs or match ammo) so its not as versatile a cartridge as id like it to be
an 85 grain 6x45 cartridge will fly flatter and deliver more energy at distance than even 5.56/223 match ammo and i believe its also capable of handling up to 100 grain projectiles for a bit more long range energy retention, so between those two possible loads are a lot of potential and big improvement over .223
25-45 sharps is really starting to interest me though, it can handle bullets from 75 grains (which match the flight path of a 62 grain 5.56, but with more energy) up to 120 grains which offers pretty close to the same muzzle energy and barrier penetration is a 7.62x39 but with a higher ballistic coefficient and great distance and accuracy... in the middle is the 100 grain option
now, there are reasons im not considering .277 wolverine or 6.5 PCC and to put it very simply i just dont like the way those cartridges are designed, to maximize case capacity such as on the 6.5PCC you have almost no case mouth and the shoulders are nearly flat, .277 is almost as bad whereas the 6mm and 25 cal have a longer taper in the shoulder, full length case mouth and in my opinion are cartridges that will be more reliable in semi automstics
anyone with any experience on these two that could comment?
an 85 grain 6x45 cartridge will fly flatter and deliver more energy at distance than even 5.56/223 match ammo and i believe its also capable of handling up to 100 grain projectiles for a bit more long range energy retention, so between those two possible loads are a lot of potential and big improvement over .223
25-45 sharps is really starting to interest me though, it can handle bullets from 75 grains (which match the flight path of a 62 grain 5.56, but with more energy) up to 120 grains which offers pretty close to the same muzzle energy and barrier penetration is a 7.62x39 but with a higher ballistic coefficient and great distance and accuracy... in the middle is the 100 grain option
now, there are reasons im not considering .277 wolverine or 6.5 PCC and to put it very simply i just dont like the way those cartridges are designed, to maximize case capacity such as on the 6.5PCC you have almost no case mouth and the shoulders are nearly flat, .277 is almost as bad whereas the 6mm and 25 cal have a longer taper in the shoulder, full length case mouth and in my opinion are cartridges that will be more reliable in semi automstics
anyone with any experience on these two that could comment?