All a GuessThere are so many variables.Your rifle may not be the same as the one you are referencing. Different condition of pump seal or hammer spring, etc.All is just a guess on your part.
well I do deal in theoretical... educated by experience having fun building pumpers and a bit of math...and Bobs post here fill in the gaps very well...just with a stock .1 ci valve My 362-17 long(Maximus barrel) hits peak power (8 pumps) with 13.4g Monster at 14.3 fpe at just under 700 fps... The Seneca 16.g are just a bit over weigh and output drops to 13.5 fpe... over-pumping to 10 pumps well that gets them to 657 fps/15.4 fpe... Crosman engineers have stated the 362 uses a 13xx valve...volume mods can enlarge the modded stock valve to about 30% more volume...some mild flow mods will help also... with a .13 ci valve ten pump will be about 100 psi less than the stock valve at 8 pumps... 11 pumps will be about 100 psi over... 12 pumps probably about 225 psi... So yep 18 fpe on 12 pumps looks to be very possable even at 16g in .177... .22 will be bout /20+ fpe if all is done well... and that is with a pump cup not flat top piston and valve... Strain on the rifle will be very near the same as stock at 11 pumps..
Quote from: Robert 5mm on April 18, 2022, 09:25:51 PMAll a GuessThere are so many variables.Your rifle may not be the same as the one you are referencing. Different condition of pump seal or hammer spring, etc.All is just a guess on your part.Uh huh...Sure wish you'd read through the thread before posting something like that, Robert.Quote from: K.O. on April 11, 2022, 04:37:28 PMwell I do deal in theoretical... educated by experience having fun building pumpers and a bit of math...and Bobs post here fill in the gaps very well...just with a stock .1 ci valve My 362-17 long(Maximus barrel) hits peak power (8 pumps) with 13.4g Monster at 14.3 fpe at just under 700 fps... The Seneca 16.g are just a bit over weigh and output drops to 13.5 fpe... over-pumping to 10 pumps well that gets them to 657 fps/15.4 fpe... Crosman engineers have stated the 362 uses a 13xx valve...volume mods can enlarge the modded stock valve to about 30% more volume...some mild flow mods will help also... with a .13 ci valve ten pump will be about 100 psi less than the stock valve at 8 pumps... 11 pumps will be about 100 psi over... 12 pumps probably about 225 psi... So yep 18 fpe on 12 pumps looks to be very possable even at 16g in .177... .22 will be bout /20+ fpe if all is done well... and that is with a pump cup not flat top piston and valve... Strain on the rifle will be very near the same as stock at 11 pumps.. Not so great for your supposition, is it? That Kirby debunked it several pages ago with reply #50. And then there are the vids you clearly haven't watched before making your claims.I won't ask you why you posted before doing your due diligence.
And you eat pigeons ?I have never had the desire, maybe they taste like chicken or rattlesnake. I did manage to catch, kill and eat a rattlesnake in Navy SERE School.
You might be surprised to find out what's in a Big Mac.But I get it, not sure if I could pluck and eat a pigeon.We butchered 150 chickens when I was a kid. For a long time I wouldn't eat chicken.I still don't like greasy roasted chicken.
JacobSend me a PM with your mailing address.I will send you a cheapo Chinese chrono - It works for meters per second.Multiple by 3.2808 to get feet per second
Ah, progress.My .22 Disco 24" barrel is a tack driver with Cpum. There's a catch though.It's a tack driver with the can off.It's the maximus adapter that's throwing things off. I didn't have it secured well enough to the barrel. This adapter does not come with a screw to tighten it to the barrel. Adapter was moving which made the can move out of step with the rifling in the barrel.If my .177 Disco 24" barrel is as accurate as this barrel is; I may never take it off. I'll definitely have to get another 362 for my .22 barrel.
Quote from: Keepingitsimple on April 30, 2022, 02:37:10 PMAh, progress.My .22 Disco 24" barrel is a tack driver with Cpum. There's a catch though.It's a tack driver with the can off.It's the maximus adapter that's throwing things off. I didn't have it secured well enough to the barrel. This adapter does not come with a screw to tighten it to the barrel. Adapter was moving which made the can move out of step with the rifling in the barrel.If my .177 Disco 24" barrel is as accurate as this barrel is; I may never take it off. I'll definitely have to get another 362 for my .22 barrel.You can drill and tap it 6-32 or 8-32---- 2 would even be better.That adapter is kinda fat even if it's plastic.Or condom/sleeve the barrel with plastic, then force-fit the adapter, afterwhich you remove the excess.You may have to experiment with different thickness.
Quote from: Rick67 on April 30, 2022, 05:03:13 PMQuote from: Keepingitsimple on April 30, 2022, 02:37:10 PMAh, progress.My .22 Disco 24" barrel is a tack driver with Cpum. There's a catch though.It's a tack driver with the can off.It's the maximus adapter that's throwing things off. I didn't have it secured well enough to the barrel. This adapter does not come with a screw to tighten it to the barrel. Adapter was moving which made the can move out of step with the rifling in the barrel.If my .177 Disco 24" barrel is as accurate as this barrel is; I may never take it off. I'll definitely have to get another 362 for my .22 barrel.You can drill and tap it 6-32 or 8-32---- 2 would even be better.That adapter is kinda fat even if it's plastic.Or condom/sleeve the barrel with plastic, then force-fit the adapter, afterwhich you remove the excess.You may have to experiment with different thickness.I think the adapter is metal, Rick. I don't know if it is steel; but its not plastic.I used a tiny dab of blue loctite to secure the adapter to the barrel.It's tight and shooting at POAWhile I was at it I also added a little dab to the end of the extended handle for the bolt.
Ah, I thought it was plastic, having read somewhere it was.