Reply To: AIR GUN PELLET SIZER
Mitch, I think that pellet sizer that Ted used was a custom made job from a personal friend of his?
I haven’t done near as much testing as I would like yet but wanted to share what little testing Ive done.
I shoot a .177 Thomas FT rifle. I bought a pellet gauge and sorted a tin of 13.4 gr JSB Monsters which I shoot about 820 FPS for 20 FPE
The majority of my pellets were in the 4.54 head size with 4.53 and 4.55 being on the outer fringes for a .01 mm plus or minus for the 400 count tin which I thought was pretty tight tolerence.
I have a Gempro 250 which I weighed these head sorted pellet with. My weights ranged from 13.2 grs to 13.6 grs with the majority being 13.4 grs giving a .2 grain plus or minus tolerence which again I thought was pretty tight?
I bought the 4.52mm and a 4.53 mm TBT head sizers
I tried the 4.52 sizer first .
Here’s the 5 shot group left target sized and the 5 shots right unsized at 28yds ( my zero )
Looks like the 4.53 unsized group shot better than the 4.52 sized group? 1/4″ grid paper
Weather was crappy and I was pressed for time before dark.
So the next I decided to use the 4.53 pellet sizer and was pleasantly surprised. The 4.53 sized group was considerably better than the 4.54 unsized group
Circles are 1/4″ for comparison
With that one test I’ve found the tin of JSB Monsters have such a tight weight and head size tolerance that I don’t even bother to sort anymore. I just pull the pellets from the tin as I’m shooting and visually inspect them then just push them through the 4.53 TBT sizer before each shot.
I shot these 50 yd Ten shot groups with my Thomas and sized JSB monster pellets at 4.53 head size straight from the tin without weighing as I was shooting. Had two crazy flyers out of 50 shots?