Last night I shot a rabbit and quickly pulled back the bolt for a second shot but the bolt would not engage forward and was stuck back. I pushed and pulled about 10 times and the bolt pushed forward. Luckily the rabbit did not need a second shot and I put my rifle away. After work today, I examined the rifle and took some test shots. It turns out the Daystate Huntsman XL is shooting 20mrad low at 37m, where it has been zeroed and sounds very weak, I can actually see the pellets fly towards the trap. Just the other day I took a squirrel at 67m without an issue. I'm hopping for suggestions on what the issue might be and if I should attempt to disassemble the rifle myself?