My 45/70 revisited ,another load

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    Here I am again with my hand out Sorry!!!
 I'm working an a new load again, my pet load is always taking over. I like it it shoots fantastic and it will dump any thing I point it at BUT, I'm looking for more. I shoot a marlin 1895 cb with a 26" barrel and a 4/9 Bushnell, and of course a limb saver recoil pad.    ()! The load I shoot is a 300 hornidy at 2400 fps, Hard to beat. The one I'm working on is a Barns copper 250 with 54gr of h4198 and gold dot primers . it should be ruining at 39000cap and I cronoed it at about 2200fps. I just think I should be able to make them go faster then my 300?? but I'm at max now. 
I looked at some Factory lever revolution shells that can be shot in the old trap door guns so there under 28000cap and there going 2000fps and there 325s.
 Do you think the "Open" end on the 250s will slow them down that far?? The 300'ers are round and the factory loads are pointed ( rubber tip)?? Is there any way any of you , think I can get at least the speed of the 300's I'm looking for a bit faster like 2500? 

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d4570 Members Profile Send Private Message Find Members Posts Add to Buddy List .416 Rigby Joined: 27 January 2004 Location: United States Status: Offline Points: 9961	Post Options Post Reply Quote d4570 Report Post Thanks(0) Quote Reply Topic: My 45/70 revisited ,another load Posted: 23 August 2006 at 07:27
	Here I am again with my hand out Sorry!!! I'm working an a new load again, my pet load is always taking over. I like it it shoots fantastic and it will dump any thing I point it at BUT, I'm looking for more. I shoot a marlin 1895 cb with a 26" barrel and a 4/9 Bushnell, and of course a limb saver recoil pad. ()! The load I shoot is a 300 hornidy at 2400 fps, Hard to beat. The one I'm working on is a Barns copper 250 with 54gr of h4198 and gold dot primers . it should be ruining at 39000cap and I cronoed it at about 2200fps. I just think I should be able to make them go faster then my 300?? but I'm at max now. I looked at some Factory lever revolution shells that can be shot in the old trap door guns so there under 28000cap and there going 2000fps and there 325s. Do you think the "Open" end on the 250s will slow them down that far?? The 300'ers are round and the factory loads are pointed ( rubber tip)?? Is there any way any of you , think I can get at least the speed of the 300's I'm looking for a bit faster like 2500?
	Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box

Guests Members Profile Send Private Message Find Members Posts Add to Buddy List Guest	Post Options Post Reply Quote Guests Thanks(0) Quote Reply Posted: 23 August 2006 at 13:25
	Sorry but the bullet shape has nothing to do with the muzzle velocity. Low BC mean more drag force on a speeding bullet. That drag is not a factor in the bore, because the air in front of the bullet is being push out the barrel. So improved slip-stream isn't any good in the bore. Once outside the rifle barrel the drag force does start to slow the bullet down, but it is over greater distances, more than a chronograph screen. Actually up to 100-150 yards the ballistic coefficient has little practical effect. Internal ballistics considered, the bullet material does have an effect. Copper (like Barnes X) are made from soft copper and therefore have low coefficient of friction. This usually results in lower velocity, because the bullet starts to slid down the barrel before the pressure builds up. Crimping also hold the bullet from sliding until a higher initial pressure wave builds. Just thoughts. BEAR BEAR

dfletcher Members Profile Send Private Message Find Members Posts Add to Buddy List .243 Winchester Joined: 13 December 2005 Location: United States Status: Offline Points: 216	Post Options Post Reply Quote dfletcher Report Post Thanks(0) Quote Reply Posted: 23 August 2006 at 17:11
	I use 55.0 grains of H4198 with the Remington 300 JHP in my 16" T/C Contender handgun. The Hodgden reloading manual lists this load specifically for the T/C, at 2,100 fps from the 16" bbl and CUP of 28K. Just a touch of recoil by the way! The same manual (their annual magazine) lists 60.0 grns of H4198 with 300 JHP as max with the 1895 Marlin. These are max loads and well above max loads listed in the current Hornady manual. In fact, the 55.0 grains listed by Hodgden as OK in the Contender is almost 4.0 grns above max for the 1895. If you're looking for max loads in the 250 grn you may want to review the Hodgden manual.