Quoted:
Quoted: Again, any thoughts or ideas in regards to this project would be greatly appreciated.
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Why bother. What will the 9mm Mag do that the Remington 110Gn JSP .30 Carbine will not do?
The 9mm magnum may have better ballistics on paper, but I doubt it will offer better terminal performance. see link
64.177.53.248/ubb/Forum78/HTML/000084.html
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AR15Fan...
In that you touch on two areas I have been doing much research on, I guess I might suggest an answer in response. Terminal and Paper Ballistics.
When looking at “Terminal Ballistics” we have to look at the “two” main schools of thought pertaining to this, “Paper Ballistics” will be touched on through out.
First:
Is to throw a light projectile at the fastest velocity the cartridge can obtain thus on impact, imparting the energy to the target in the quickest time in the hopes that the smaller projectile does not penetrate through the target or totally fragment which in some cases is warranted. Using a hollow pointed 110 to 125 grain projectile in a .357 magnum is the perfect example of this theory at a listed 92% “One Shot Stop”. This combination stood for years as the best one shot stop combination. Yet, it does have its fallacies. In a condition of heavy clothing or very thick-skinned animals, the energy of the smaller projectile is wasted on the outer coating, leading to a wounded animal or the possibility of becoming the intended target of your adversary or the Hollow point become plugged and act like a light weight Hardball round. I.E. The projectile could either shoot right through or expand all of its energy to fast.
Second:
Is to throw a heavy projectile at a rate of velocity that guarantees its arrival with enough retained energy to penetrate causing the greatest amount of internal damage again hoping that the projectile does not penetrate completely thus expending its retained energy within the target. The .45 ACP is the classic example of this theory and has been proven on numerous occasions to be true and this round even in its full metal jacket is listed just under the .357 magnum in its ability at one shot stops. However the Number one load with documented “one shot stops” goes to the Federal 230 grain Hydra-Shok bullets at 94%. Although we know that, there is truly nothing that can be called the “One Shot Stop” firearm cartridge.
Therefore, we have the two basic theories and now we have to stop and look at the ability of the 30M1 carbine round. I have to admit that the current statistics of the 30M1 is very similar to that which we know of the .357 magnum. The current information we need to look at is the fact that the matching of the 30M1 and the statistics of the .357 magnum or in relation to a cartridge fired from an 18 inch barreled rifle (the 30M1) and a cartridge fired form a 5 inch barreled handgun. What I am trying to convey is the possibility of creating something, which is not available at this time and it seems that a conversion of this nature has merit in the creation of a suitable small, lightweight, fast action rifle. This rifle capable of being able to fire projectile as light as 90 grains Jacketed Hollow Point at approaching 2800 fps (thus covering the first theory of Terminal Ballistics) as well firing projectiles weighting as much as 210 grains at or around 1150 fps (thus covering the second basic theory of Terminal Ballistics). My hopes are for a 115 to 124 Hollow Point at around 2300 to 2400 fps. In either of these situations, this cartridge combination far exceeds the ability of the 30M1 Carbine round in any format.
I agree that the information posted by way of the link you supplied is interesting at best. However, when looking at retained velocity and the ability of even the Remington 110 grain Soft Point to expand “reliably” at the retained velocities of that range are in doubt. At 100 yards the Remington 110 grain soft point is traveling at a published 1567 fps with a retained energy of 600 ft-Lbs. If my calculations are correct, I should be looking at the 9mm Winchester Magnum round, in its 124 grain Hollow Point form, still traveling at or near 2000 fps at 100 yards. With a retained energy of close to 925 ft-Lbs. Knowing that current projectiles used for the 9mm and .357 caliber weapons are manufactured to expand reliably at velocities around the 1100 fps range, this caliber has many pluses the .30M1 Carbine round falters in. Mainly, and again I state, reliable expansion at greater distance as well as having a greater variance of utilizable projectiles.
Besides, I am also doing it because it does not exist.
Thanks for listening and comments welcome.
Tye G.