These guns are incredible. The range, accuracy and versatility.
Now that I got this Brux barrel sorted out and feeling good about it I decided to drop test the BOMBs again. After verifying the Bushnell LRHS on a tall target test last week I swapped it over to the SML for torture testing. Friday was 72°F and breezy, great day for shooting.
I had 4 of the Bad Bull version of the 275 Parker BE so I used them to get the new optic zeroed. First round was a half mil low and half mil left. I made a correction and shot the next three (far left). I loaded up and shot three of the 316gn BOMB to establish POI (middle), then shot a 300gn BOMB to establish off-set if any (right):
The 316gn bullet was .5 MOA low and the 300gn bullet was 1.5 low. At 302yds I shot 3 of each, measued drop, subtracted off-set, and calculated come-ups in MOA. I was on track for two, sub-half minute groups but missed a wind call (I get a lot of swirl on the last 1/3 of the range):
316gn bullets were cruising at 2622fps and 300gn bullets at 2685fps. It was really sunny and breezy today and I got some bigger ES numbers than I usually get so I am going to try this again later in the week toward dark and stretch it out to 500yds if nobody in on the range. I still need to shoot them further but I'm running a G1 BC in the .4s and was off by .1MoA on drop at 300yds
Today was overcast so I hit the range again to re-chrono those loads since I got garbage readings the other day:
FF bullets were shooting 2687fps with an SD of 16fps
SF bullets were shooting 2655fps with an SD of 9fps
The SF bullets shoot slower but have lower deviations (the ES for the SF bullet was the same as the SD for the FF bullet) but I would assume that has largely to do with my sizing and seating consistency. The SF also shoot a little bigger groups (.625 MoA compared to .3-4 MoA for FF) but who really cares.
Did anyone get me a LabRadar for X-mas?