I wouldn't be pleased with that group. I'd try some different bullets or powder chargeand see if a change up or down in weight made a differance. Not a horriblegroup, but I'll bet the rifle will do better.
I try for < 2" @ 100 yards with inlines. Most will do it if you find the right combination of components. I'd also recommend loose powder for finding a load. A change of 10 grains could make a huge differance.

A couple of things I would try...Go to loose powder as suggested...My Knight doesn't group well with 100 grs, but does with 90...It makes about a 1-1/2 inch difference at 100 yards...

I clean more than you mentioned...2-3 damp patches with rubbing alcohol and a squirt of Murphy's Oil Soap, put this in a spray bottle and dampen 3 patches and use both sides...Next run a dry patch down and a lightly oiled patch followed by a dry patch....Think about it, when you put your gun away you oil the barrel them probably run a dry patch down to remove excess oil before you load it...You need the barrel conditioned the same way for each shot to have the bullet see the same resistance each time coming out....

Two bullets that group out of 3 Knights that I sight it....The 300 gr Barnes original all copper and the 250 SST with the T/C sabots....

btw...My knight doesn't like the sabots shipped with Hornady SSTs, but did like the T/Cs...It also didn't like SSTs with MMP-24s...That's how picky these things can be, like changing just the primer on a cartridge gun.....

You are on the right track, I would bet if you take a little more time cleaning between shots you will see and improvement and if that doesn't do it, I'd go to loose....

If you're not squirrel at 100 yds, but rather deer hunting at 100 yds... That'll do just fine.

But then again, if you stop there you won't have anymore fun shooting. Mix it up and make smoke. The perfect load does not exist but it is fun looking for it.

Not a bad group, as earlier said, a deer wouldn't know the difference. As an offer of advise, watch your breathing,CONCENTRATE on your front sight/reticle and squeeeeeze the trigger, for that suprise shot! Lookin good.

Agreed. 2" is great shooting. 3" is good shooting and acceptable for most deer hunting.For 200 yard shotsthen smaller groups at 100 yards are needed for the longer shotsto be< 4" at 200 yards.
Chap Gleason

Gleason.chapman - One of the qualities of Outdoorsman's 100 yd target may have been overlooked (not by you, necessarily). While some critique his 2.5" group, I take note his group is on target, all shots falling within 3" of POI. The bottom line is, after all, to hit that at which we aim. His group, taken to 200, could well be under 6" AND on target. That would be a high confidence deer pattern in my book. I think we spend too much time here on group size, a measure of gun and shooter capability, and not enough on group size/POA/POI, the combination of which measure readiness to effectively kill.

By the by, what powder charge, sabot, gun did you use on the Nosler test in the other post?