Jsteurrys sent me a dozen 275BE's to try in my Rem 700ML .45 McGowen. All 12 weighed 276.2gr according to my digital scale. Jim wanted to see a one holer. Almost on target 2!
Stats:
Rem 700ML .45 McGowen
EGW base
Burris Six 2-12x50
Burris tactical rings
Bulls Bag front rest
Caldwell rear bag
Boyds TH ADL varmint stock w/Limbsaver recoil pad (NOT BEDDED)
100yds for all targets
Gun had been cleaned after last range trip, breechplug was decarboned with a 1/8th bit. Savage vent was under .035 so it went back in. I fired one 260gr Harvester PT to put some fouling in the bore before shooting the Parkers.
First 3 shots with ??gr IMR4198 w/ dry wool wad
Next 3 with ??gr H4198 w/ dry wool wad
Lastly a 6 shot group with ??gr H4198 w/ lubed wad. Shot 3 was after about a 10min cool down and is labeled. All others were with a 1-3min cool down between shots.
I really like this sabotless shooting.

I give the Parkers a big thumbs up.