Post by roadie on Mar 8, 2004 18:00:35 GMT -5
8-)When I first got my Remington model 700 M. L. I was so disappointed with the way it shot using sabots and Pyrodex I decide there had to be something better.
So doing something that all of you would considered to be extremely stupid. I decided to try H110 smokeless powder but because there isn't a way to crimp the bullet in the barrel, all that happened was misfires. Then I tried VIHTAVOURI N110 all the misfires clear up. I started out with 25 gr. of powder working my way up 1 gr. At a time eventually I ended up at 37 gr. it started to show pressure signs on my copper crush. The bullet I used was a Hornady 200 gr. XTP. My velocity started out at 1750 fps and ended up at a 2450 fps realizing I was going over pressure I backed down to 34 gr. this gave me 2300 fps but N110 is a magnum pistol powder, so when I had several hanging fires I could tell my pressure went way up. I decided then to change to rifle powder. The powder I felt would closest match my application was H. 4198. I also changed Bullets to the 275 gr. Powerbelt bullet, I decided to start with 41 gr. this gave me 1830 fps working up 1 gr. at a time, I started showing pressure at 58 gr. this gave me a velocity of 2430 fps I backed off to 55 gr. this gave me a velocity of 2300 fps with an extreme spread running from 2304 fps to 2318 fps. I crunch the numbers through my ballistic software and it gave me 3230 ft. lb. of energy or roughly the power of a 7 mm Mag.
The rifle I was using was the Remington 700 M. L. in 45 caliber with the nipple and firing pin conversion kit sold by Cabela's and if you're familiar with the breach plug on the model 700 their is .300th of threads left in front of the nipple in the breach plug. I threaded a 1/4 inch copper rod and drilled a .030th hole through the center for a flash hole, I cut a small bevel or cup in front of it to improve ignition. The way I could tell when I was reaching Max pressure was the edges of the copper crush with start to roll over. By the way throughout working up these loads I had to make over a dozen of these copper crush.
I found out early on that Powerbelt Bullets out of the box are not fit to use with smokeless powder, a small drop of epoxy. Cured the problem the groups at 100 yards stay under one inch and no fliers as long as I clean the barrel every five or ten shots according to my ballistic program if I site the rifle in 200 yards the bullet does not raise over 3 1/2in at 100 yards which I feel it's pretty good in anybody's book.
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img34.photobucket.com/albums/v103/quaken/Conversion.jpg [/img]
So doing something that all of you would considered to be extremely stupid. I decided to try H110 smokeless powder but because there isn't a way to crimp the bullet in the barrel, all that happened was misfires. Then I tried VIHTAVOURI N110 all the misfires clear up. I started out with 25 gr. of powder working my way up 1 gr. At a time eventually I ended up at 37 gr. it started to show pressure signs on my copper crush. The bullet I used was a Hornady 200 gr. XTP. My velocity started out at 1750 fps and ended up at a 2450 fps realizing I was going over pressure I backed down to 34 gr. this gave me 2300 fps but N110 is a magnum pistol powder, so when I had several hanging fires I could tell my pressure went way up. I decided then to change to rifle powder. The powder I felt would closest match my application was H. 4198. I also changed Bullets to the 275 gr. Powerbelt bullet, I decided to start with 41 gr. this gave me 1830 fps working up 1 gr. at a time, I started showing pressure at 58 gr. this gave me a velocity of 2430 fps I backed off to 55 gr. this gave me a velocity of 2300 fps with an extreme spread running from 2304 fps to 2318 fps. I crunch the numbers through my ballistic software and it gave me 3230 ft. lb. of energy or roughly the power of a 7 mm Mag.
The rifle I was using was the Remington 700 M. L. in 45 caliber with the nipple and firing pin conversion kit sold by Cabela's and if you're familiar with the breach plug on the model 700 their is .300th of threads left in front of the nipple in the breach plug. I threaded a 1/4 inch copper rod and drilled a .030th hole through the center for a flash hole, I cut a small bevel or cup in front of it to improve ignition. The way I could tell when I was reaching Max pressure was the edges of the copper crush with start to roll over. By the way throughout working up these loads I had to make over a dozen of these copper crush.
I found out early on that Powerbelt Bullets out of the box are not fit to use with smokeless powder, a small drop of epoxy. Cured the problem the groups at 100 yards stay under one inch and no fliers as long as I clean the barrel every five or ten shots according to my ballistic program if I site the rifle in 200 yards the bullet does not raise over 3 1/2in at 100 yards which I feel it's pretty good in anybody's book.
Now I'm sure that all of you think I'm pretty stupid for use smokeless in my Remington and even stupider for posting it in an open forum but there is quite a bit of data for loading the savage on the Internet. If you have a InLine muzzleloader and want to use smokeless powder, trade it off and buy the savage model 10II, I knew I wasn't going to blowup my own gun but if anybody else out there wants to use my data in their gun the easiest way to tell when you have reached Maxum pressure is to compare your gun to the one below.
I'm sorry if you think you are the victims of a drive-by posting, I was just trying to provide some interesting reading. The data that I posted is definitely dangerous in the wrong hands. The rifle you seen destroyed in the previous picture was a 54 caliber Remington the metal in the barrel is pretty thin and that gun was intentionally blown up 