Yeah, that jump to 800+ FPE was totally unrealistic,....but hey a 500+ FPE .45 is pretty wicked
Slug those bores before buying a bunch of ammo and or molds... Cleaned and polished bore came out to 0.461" without gaining much size with the polishing.
Quote from: Airgun-hobbyist on October 14, 2021, 05:03:32 PMSlug those bores before buying a bunch of ammo and or molds... Cleaned and polished bore came out to 0.461" without gaining much size with the polishing. Did you slug the full length of the barrel ,or just the muzzle end ,.461 is way big ,might be why my accuracy at 15yds with 456 ammo was so bad .
I bet they bored the barrel to 11.75 mm or .46 instead of the 11.5 mm of a .452Buffalo arms has a 46 caliber sizing die for $48
A 300gr bullet traveling close to 900 fps is nothing to sneeze about.I wander what FPE that gun would get with a EPP/UGI would rather focus towards a bullet with a big Meplat that would travel in the 950 fps ( I would guess 250-270gr ? ),......that would be lethal FPE is a great number to chase and it makes us all worm and fuzzy but once you are sending a 250gr bullet it will make so much damage already no real need for more weight, at that point I look more to the shape ( big Meplat to me is hunting nirvana ) and speed to get that bullet to really get there and stay flat.
Quote from: Nomadic Pirate on October 14, 2021, 09:13:56 PMA 300gr bullet traveling close to 900 fps is nothing to sneeze about.I wander what FPE that gun would get with a EPP/UGI would rather focus towards a bullet with a big Meplat that would travel in the 950 fps ( I would guess 250-270gr ? ),......that would be lethal FPE is a great number to chase and it makes us all worm and fuzzy but once you are sending a 250gr bullet it will make so much damage already no real need for more weight, at that point I look more to the shape ( big Meplat to me is hunting nirvana ) and speed to get that bullet to really get there and stay flat.My current .45 slug mold is a 244 grain flat nose with some hollow point pins. I had to look up "meplat" and will do some more reading. My goal is to size a slug to keep the muzzle velocity over 950 FPS and I'm hoping the mold I have will get me those results. To the other guys that slugged their barrels, I had a devil of a time pushing an NSA .457 slug through the entire bore. I started it in the breech end and used a plastic shaft to get it going. Once the shaft no longer reached the slug I switched to my .25 cal carbon barrel rod and got it the rest of the way. Seems like if I grab the slug by the flats from the rifling I get .455 and .458x if I go on the "high" spots. I'm really shocked the rest of you are getting such high numbers on the slug diameter. My NSA .457 slugs also perform at 500+ FPE.
I slugged my challenger 45 today with the hunter supply 205 wc that I powdercoated , it was a tight fit and the slug was pushed the full length of the barrel, it measured .461, accurate and arsenal both will modify their molds to your desired dia ,so that's what I'm going to do , I expect the fps will increase with a good seal and accuracy should improve too ,
DJ what mold are you using to get those 461 slugs.
Quote from: Ironman482 on October 15, 2021, 06:20:20 PMDJ what mold are you using to get those 461 slugs.https://noebulletmolds.com/site/shop/458-460/458-244-fn-ca4-bt/458-244-fn-ca4-rg4-cavity-bt/Most were .4601-.4605, just one or two came in at .461, but I didn't check all of them either.