Post by missionary on Nov 27, 2021 9:07:55 GMT -7
Good morning
Two plus years ago we bought a 450 Bushy Upper 16 inch barrel for an AR lower from a feller. But #19 stopped our normal return date to June this year. Due to travel to supporting churches I did not get to start loading for this beast until August. But happily where we lived was out in the county and our fine neighbor permitted me to do limited load tests out at his burn pile down by a creek. Just a 5 minute walk.
Read all I could find while still here and started with a 240 grain .452 (had 500 on hand) pushed with Buffalo Rifle (BR) as I had an 8 pound jug and 5744 was a recommended powder. I do not recommend 5744 nor BR due to unburned kernels that will cause you grief if just one gets into the chamber. But when the unburned kernels stay in the barrel it works great. That is a good burn rate for my upper system But cleaner options are out there. My other options were in storage though.
Seating depth was little Issue but at least .350 depth was needed to get a good burn which affected accuracy some. A 260 grainer is a better choice but we had only a few. Cleaner powders (4198) would help alot.
Magazines are a real issue. Do yourself a favor and buy one real dedicated 450 Bushy mag to use as a pattern to modify and or compare standard mags to. Mag lips are an issue. Mag front face is an issue. Mag follower is an issue... So get one real 450 mag and enjoy it.
An extractor made for the 450 is also good to have. Our bolt was assembled with a standard .223 extractor (modified) and was not the best. This possibly was a part of unburnt kernel issues. We have a real extractor on our get list. None were available a couple months back.
If you are not of the experimenter attitude get a bolt rifle. But then if you get a bolt rifle better caliber .45 options are out there.
But for a semi-auto caliber .45 the 450 Bushy is a thumper. Not many critters are going to handle to many .45 caliber 260 grain slugs at 1800 fps and walk away.
This round makes the AR15 platform one big beast. Lots of fun also when the bugs are under control.
Two plus years ago we bought a 450 Bushy Upper 16 inch barrel for an AR lower from a feller. But #19 stopped our normal return date to June this year. Due to travel to supporting churches I did not get to start loading for this beast until August. But happily where we lived was out in the county and our fine neighbor permitted me to do limited load tests out at his burn pile down by a creek. Just a 5 minute walk.
Read all I could find while still here and started with a 240 grain .452 (had 500 on hand) pushed with Buffalo Rifle (BR) as I had an 8 pound jug and 5744 was a recommended powder. I do not recommend 5744 nor BR due to unburned kernels that will cause you grief if just one gets into the chamber. But when the unburned kernels stay in the barrel it works great. That is a good burn rate for my upper system But cleaner options are out there. My other options were in storage though.
Seating depth was little Issue but at least .350 depth was needed to get a good burn which affected accuracy some. A 260 grainer is a better choice but we had only a few. Cleaner powders (4198) would help alot.
Magazines are a real issue. Do yourself a favor and buy one real dedicated 450 Bushy mag to use as a pattern to modify and or compare standard mags to. Mag lips are an issue. Mag front face is an issue. Mag follower is an issue... So get one real 450 mag and enjoy it.
An extractor made for the 450 is also good to have. Our bolt was assembled with a standard .223 extractor (modified) and was not the best. This possibly was a part of unburnt kernel issues. We have a real extractor on our get list. None were available a couple months back.
If you are not of the experimenter attitude get a bolt rifle. But then if you get a bolt rifle better caliber .45 options are out there.
But for a semi-auto caliber .45 the 450 Bushy is a thumper. Not many critters are going to handle to many .45 caliber 260 grain slugs at 1800 fps and walk away.
This round makes the AR15 platform one big beast. Lots of fun also when the bugs are under control.
