Question about 50yd shot groups
 

I shot at and missed a doe the other night, so after getting over that depressing event, I decided to check my shot placement.

I'm limited to a 50yd target on my property, so I put three shots in a nice tight group that are about 2" high at 50yds. I'm shooting 295grn Power belts, using 100grns of Cleanshot, can anyone give me a good idea of where this will hit at 100yds??

RE: Question about 50yd shot groups
 

Between 4 to 5 inches HIGH, and dead on around 150 yards....Find a place where you can shoot at the farther distances!!!

Keep yore powder dry!!

RE: Question about 50yd shot groups
 

4" to 5" high @ 100yds?? Wow, I thought that a bullet that heavy and slow would actually start to drop after 50yds?,

So, I really need to be "dead on" at 50, and that would put me 1-2" high at 100yds?

RE: Question about 50yd shot groups
 

I'm looking at a ballistics chart right now, published by Big Bore Express, makers of Power Belts. According to them, the 295-grain Copper Magnum bullet has a ballistic coefficient of .168. (If you have a set of ballistic tables, such as those in the Speer reloading manual, you can use their .17 BC figures for this 295-grain bullet to check performances.) With this bullet and 100 grains of Pyrodex, muzzle velocity is 1620 FPS. Zeroed at 150 yards, it is 3.48" high at 50 yards, + 4.48" at 75 yards, + 4.31" at 100, and + 2.93" at 125 yards. 0 at 150, and -10.4" at 200 yards. Therefore, midrange misses (shooting over) at 100 are quite possible, especially if you held a little high to compensate for a drop that wasn't there!!

Keep yore powder dry!!

RE: Question about 50yd shot groups
 

Jeez-uz! No wonder I missed that doe!

Good info.

Thanks for the help.

RE: Question about 50yd shot groups
 

smokpole,

I do not believe those estimates are correct (at least not for my gun). Forget the tables for a minute. Every load I've worked up, I started at 50yds, got a good group, & then moved out to 100yds. WITHOUT EXCEPTION - every load that hit 2" high at 50yds was either on the "X" or less than 1" below the "X" at 100yds. This is using various 300 & 350gr sabots and 348gr Aero PowerBelts over 90 to 110gr of Pyro or CleanShot and with 80 to 95gr of 2fg Triple 7.

Let me ask......were you able to fire a fouling shot before you shot at the doe?? If not, that is probably where things went wrong......that 1st shot can be several inches off depending upon the condition of the bore and the presence of lubricant inside the bore.


"Every moving thing that liveth, I give unto you as meat" (Gen 9:3)

Trust God..........but keep your powder dry!

RE: Question about 50yd shot groups
 

I agree with Mark Whiz. My rifle shoots right on at 100 yards and 6 inches low at 150. 100 grains of 2F and a 300 grain XTP sabot.

RE: Question about 50yd shot groups
 

Ditto what they said. My knight is 1.5" high at 50, dead on at 100 and 3" low at 125 with 100 grains of pyrodex and a .260 gr knight sabot. I don't see how it could be that high at 100....especially given the load you are shooting. Sight it in from a bench and you'll know for sure. Just my opinion.

RE: Question about 50yd shot groups
 

Well, the figures I quoted are "straight from the horse's mouth", in that they came from the people who make Power Belt bullets. However, whether these figures are what you will actually get from your particular gun can only be determined by shooting it at the various distances involved!! My rifles don't give as high a muzzle velocity with 100 grains of Pyrodex and the 295-grain bullet, so my trajectories are not as flat.

Keep yore powder dry!!

RE: Question about 50yd shot groups
 

I agree with Mark also, My Knight is 2in. high at 50, dead on at 100, about 4in low at 125yds. 300 gr. bullet with 100 gr. of FF blackpoder.