Jhills, I had you and Glocker mixed up for a minute. I want to know if Glocker can cycle those monster bullets reliably. The 200 grain ones tend to hang up sometimes.

But, no, I am not concerned about shooting the gas checks through the suppressor. I guess one may have concerns with it falling off and having a baffle strike, but I have probably put 500 rounds through it already and have not had issue. I get the bullets from Cast Performance. I've got a TON of them if you need some. In winchester brass, I do not have any issues loading them in 357. Never had to use 38.

My cycled them well, using 357 brass. They are pretty good on hogs, never had one walk it off! Deep penetration, gun is very quiet but impact of the full wadcutter is quite loud.

That short barrel is sweet. I left mine at 20".

I wrote some of those stability calculators. The ones I've written (and most others) compute gyroscopic stability, which is lowest when the bullet leaves the barrel and INCREASES as the bullet flies down range. If a bullet is stable out to 150 yards, but not at 200 yards, the issue is dynamic stability which is much harder to predict with a simple formula. It requires knowing a bunch of coefficients about the bullet that are not generally available, and it is also much more strongly affected by manufacturing imperfections. The gyroscopic stability calculators also suggest your bullet has no problem with gyroscopic stability. If there is a stability problem, it is a dynamic stability issue.



All guessing at BCs can do is suggest a range of possible 200 yards drops if sighted in at 100 yards. I've also seen bullet BCs vary widely depending on the gun they are shot from as well as the velocity. Once bullet flight times are longer than about 0.5 seconds, the easiest approach to sighting them in is a really big target so your first shot is somewhere on the paper. Using a dirt backstop and a second person sighting can also be effective if they can see the hits and walk you in.

BC will vary slightly from barrel to barrel but not enough to really see at normal distances, maybe ELR stuff. Many bullets do better at subsonic speed. Either way, with subs 1.2 mil every 25 yards is going to be pretty close in most cases.

the "guessing" at BC, in my thread above came from NOE bullet molds who give the BC for their bullet molds. Their 197gr bullet mold without gascheck is very close to the one pictured with a slightly more pointed profile so I dropped the BC a little for the slightly larger meplat.

I know the Berger twist rate calculator is better for boat tail bullets and they give twist rate recommendations for their flat based bullets for that reason. .

Update to thread: I realized this weekend that my issues with stability was a tree branch at about 150 yards. Once I figured that out, I was able to cleanly hit the 200 yard target every time. Roughly 17 moa of drop at that range. I've also decided that the 200 gr load at approx 1020 FPS is not a reliable pig killer. I am sure that they are dead or dying, but I only recovered 2 of the four that I shot, and one of the recovered pigs I did have to track quite a ways. Not as quiet, and not as fun, but I'll go back to 158 gr at 1800 fps for hunting.

Another update to this thread, as I now have a torn up baffle. J Hills, you were right. Yes, you should be concerned shooting gas checks through a suppressor. David and I have decided that the gas check has probably been falling off and striking the baffle. UGH.