HuntingNet.com Forums - View Single Post - .54 GM Renegade Accuracy/Trajectory Report
Old 05-31-2009 | 09:48 PM
  #1  
Semisane's Avatar
Semisane
Boone & Crockett
 
Joined: Apr 2007
Posts: 10,918
Likes: 1
From: River Ridge, LA (Suburb of New Orleans)
Default .54 GM Renegade Accuracy/Trajectory Report

OK guys, here's one I think you'll enjoy.

The .54 Green Mountain barrel on my Renegade is practically a virgin,having only about two dozen shots through it back when I first got it in November. I recently mounted a Simmons 4x ProDiamond scope on it and couldn't wait to seehow it shoots with a sight that I can actually see the target with.

I wanted to shoot groups at 25, 50, 75 and 100 yards using the same point of aimto see how it grouped at those ranges and what the trajectory would be. So Iprepared a bag of powder tubes with 85 grainsweight of GOEX FFFg and grabbed a bag of cast balls Bronko sent me. (As it turns out, that 85 grain weighed chargefills my TC U-View powder measure to the 95 grain mark.) All of the shooting was from a bench with Caldwell front and rear rests. Temperature was in the upper 80's and humidity was about normal for S.E. Louisiana - pushing 90%.

I took three shots at 15 yards to get the scope sighted in, then started shooting 5-shot groups. Although I had the misfire problems addressed in another post, every shot throughout the session felt good and steady. Recoil was moderate at best - this long heavy gun is a pu$$ycat to shoot.

Point of aim on all targets was the center of the one-inch black dot.

First target - 5 shots at 25 yards.




I know, I know. Twenty-five yards for a scoped gun isn't much of a challenge. But I still laughed out loud after each shot.
TRAJECTORY NOTE: Center of group is 1 & 1/4" above point of aim.

OK, here's the next five shots at 50 yards.




Now that's mighty pleasing - head of rabbit at 50 yards.
TRAJECTORY NOTE Center of group is 3" above point of aim.(1 &3/4" above 25 yard POI)

I'm still smiling. Here's the next five shots at 75 yards.





Well, I guess 3" isn't too bad, but I was really expecting better after that 50 yard target. Wind was not a factor.
TRAJECTORY NOTE: Center of group is 3 & 1/4" above POA. (Only 1/4" above 50 yard group and 2" above 25 yard group.)

OK, now the 100 yard group.





Man, I wish I could call that shot to the far right as shooter error. But I really didn't feel like it was.
I do like those other four that grouped into three and a quarter inches though. I'm not going to complain.
TRAJECTORY NOTE: Center of group is1 & 3/4" above POA. (That's 1/2" above 25 yard group, 1 & 1/4" below 50 yard group, and 1 & 1/2" below the 75 yard group.)

I was impressed with how flat the trajectory is. If I sight in for "dead on" at 100 yards, it should be 1/2" low at 25, 1 & 1/4" high at 50, and 1 & 1/2" high at 75. As I sit here typing this I'm wishing I had shot a group at 125 yards to see where that would be.

With my main objective completed, I decided to shoot another group at 50 yards, but with ten more grains of powder - 95 grains weight. Here' the target.






That group is about three times larger than the 50 yard / 85 grain group.

Well it was getting late but I had time for one more round. I decided to try to improve on the three-inch / seventy-five-yardgroup on target #7.

I didn't. Here's the target.



EDIT: I just noticed that I put SIX shots into this target, so five of them made a 2 & 7/8" group. I must have zoned out at the range.


Except for the misfire problem, it was a great day of shooting.
Semisane is offline  
Reply