Pressure
 

I emailed Cheddite and they responded relating to Herters Low Recoil

Dear Sir,



12gauge Low Recoil 1oz. has velocity 1,060 FPS (recorded at 1 meter from the barrel) and 8195 PSI as pressure.

Instead 16gauge we don’t have any low recoil and any shotshell in 7/8 oz ,but only Dove and Quail 1 oz. , If you refer to this , the velocity is 1,165 FPS (recorded at 1 meter from the barrel) and 8775 PSI as pressure.

B&P marketed a low pressure 12ga called Sub Sound at 110 FPS but it's no longer imported. There is an Italian company called Clever that makes some nice shooting shells. The have a 3/4oz 20 at IIRC 1100 FPS but I don't know what the pressure is and haven't been able to find out. I suppose I'll have to send them out to be tested. I know I can't tell the difference between them and my reloads but that's not a valid comparison.

How do you resolve Target Low Recoil 1 oz. 1060 9,200 (tested) with
factory info: 1,060 FPS (recorded at 1 meter from the barrel) and 8195 PSI as pressure?

Typo? 8195 could be considered 8200 and typed as 9200. That's only a guess on my part. Personally I will follow reported factory specs.

Shotshell manufacturers are pretty stingy with their pressure specs although I have not tried to get any data from them recently. I am not sure it would mean much anyhow as their ooadings change as much as a woman changes shoes. Their specs can and does at least occasionally change from lot to lot. Twenty years ago we did a bunch of testing on factory loads after noticing patterning differences. We tested randomly over the course of a year and found pressure differences in the same advertised loading, i.e AA, STS etc., could vary by as much as 1400 psi. However, their reported velocities remained pretty constant. I would be very surprised if that were not the case today.

It leaves me in a quandary. I am sure I am not the only one. 8200 works in most of my old guns but 9200 is too much for some in my opinion. At 8200 I would use Herter's 12g. LP and not bother reloading except for the few. I have a few guns that I keep below 7000psi. I now load for 10, 16, 28 and .410 to get the loads I want or to save expenses.

Milt,

What do you suppose the pressures on that smokey argentinian ammo was?

Maybe, the old sxs community is hyping the need for low pressure just a bit too much. Especially since many cite the need to protect old wood. See Bruce Day's comments in past threads regarding the need for low pressure.

After years of trepidation and cleaning up after black powder followed by Federal Paper Hulls and IMR 7625 I quit worrying about it to a point. Sherman Bells "Finding Out For Myself" articles in Double Gun Journal where he blew up Dr Gaddy's GH Damascus Parker and my VH of the same frame size and same year of production. Both gave up the ghost at the same spot and the same 31,400+- psi. I am relieved of worry about SAMI pressures. Again, out of deference to the stocks and my shoulder, I shoot Off the shelf liter than normal loads at modest velocities out of 1881 Twist and later Damascus Parkers. As Alfred E. Newman said, "What, me worry?"

Gary, I have seen Bruce's comments on shells and I don't agree with them, as in the past twenty years I have seen in person two butt stocks cracked by "promo" loads, your mileage may vary, but to me that's a stupid way to save a buck or two............:eek: