.177 Brocock Bantam, 52 yard groups, various pellets and speeds

[Centercut]

Shot various groups today with my .177 Brocock Bantam at 52 yards, no wind. It became apparent that as I lowered the velocity, the groups tightened up. I'd like to get the JSB Heavy 10.3 gr. down to 885 to 890 fps, and I think the group size will shrink to dime size. Unfortunately, the Bantam does not have an HST adjustment, just the speed knob on the side with High, Medium, and Low. I didn't use low since it drops the speed over 140 fps from High. The groups were the JSB Exact Heavy 10.34, the JSB "old" Monster 13.4, and the H&N Barracuda 10.65. See five shot groups below. Velocity was with the speed adjust on High and them Medium for each pellet. Best groups were the JSB Heavy and H&N Barracuda om Medium, pretty much the same spread.

 

[Hynzie]

nice groups great job

 

[Skip-in-WV]

Actually, it is easy to adjust. Remove the stock screw throughthe grip. On the bottom of the rifle is a screw that holds the hammer spring endcap. On the left side is a cutout where you can see the hammer. It has 2 screws showing. The rear one keeps the hammer in place. Loosen the front one, put an allen wrench through the back into the hammer and adjust the striker. In for heigher. Out for lower. It adjusts the striker just like it does in the Marauder. There was a long thread on Airgun Warier recently that shows pictures. But I can't find it.

 

[Centercut]

Thanks!
Mike

 

[Airgun Advisor]

Shot this 10 shot group today at 50 yards with my Bantam in .177. I was using JSB Exacts and found the same thing on the power. The medium setting is where the rifle is most happy.

 

[tricker]

I found that at that distance my rifle liked the redesigned 13.4gr pellets more than 10.3s or old design 13.4. Better flight stability, tighter groups. MAC 1 Hunter. Tom

 

[Crusher]

Good stuff. Thanks for sharing the groups with us. I'm testing my Unicorn a lot, trying to find the best pellet and speed match for it. Looks like the WC wants to be above 900 fps before it groups well. 
Nice shooting by the way.!

Crusher