Bula Defense Systems .450 bushmaster XM21

[nf1e]

First XM21 out in .450 bushmaster followed me home from Camp Perry this year. Looking forward to putting some " big lead" down range.
There is a spare VXR-Patrol in 1.25 - 4 that is just itching to top of this big girl.

[RCS]

Nice workmanship and an interesting caliber for M14 system. I have friends that have (and still do) hunt in Alaska
and they tell me the best choice is the commercial Browning BAR in 338 caliber. The ballistic performance is better
than the 450 Bushmaster and the semi auto Browning is very dependable under northern hunting conditions.

Some years back the M1A was offered in 358 Win and died

[nf1e]

Just popped a 1.25 - 4 Leupy on her this morning.
I think it will take care of most game around here.
I really don't shoot much more than paper and AR-500 targets anyway.
Started to realize my own mortality years ago and gave up hunting with anything but my camera.

[lyman]

nice stock on that rifle!

[nf1e]

nice stock on that rifle!

Have to agree. It was on another rifle at Camp Perry. Jeff, the President of Bula Defense and I were chatting and he commented that he didn't care for the color, a bit lighter than what he prefers.
I suggested that if he could make a rifle using the type of receiver I wanted and put it in that stock , I would buy it. Needless to say, the builder at the factory worked that day and delivered it to me the next day after he shot in the Garand match.
I've been admiring it ever since. A little sandpaper and BLO and I think it will be exactly what I want in a thumper.

[nf1e]

Got my first case of Hornady ammo for Miss Thumper today.
Hopefully, in the next few day she will visit the range and have a little fun.
While I am at it there's a bunch of prepped Starlite brass in the dryer in the shop. Got the powder, bullets and primers ready to whip up a batch tomorrow afternoon.

[p246]

Looks like your having a lot of fun.

[nf1e]

I do love the hobby and sharing insights with like minded folks.
Doesn't get any better than this.

[Bill E]

Really nice, thanks much for sharing.

[nf1e]

Trust but verity kit arrived from Pacific Too & Guage today.

[nf1e]

Ammo and bullet comparison side by side.

Mouse gun on left, next .450 then 6.5 then .308.
ARs are available with uppers for .450 While M14s are good to go with .450, 6.5 and .308.
Other calibers are available , but these are mine and I am sticking to it.

[nf1e]

A bit of time availed itself this afternoon so I had an opportunity to get to know the thumper just a little. I would like to compliment Josh at Bula Defense for a super job of building this fine rifle for me.
Also I would like to thank Wayne the owner of Bula Forge for assisting Josh in fitting the handguard over this monster barrel. Well done guys, the teamwork was enjoyable to watch.

This photo show the .450 bushmaster barrel next to a USGI H&R. I think the bushmaster is more of a lolly collum than any barrel I have been used to.



- - - Updated - - -

Checked headspace with brandy new Pacific Tool and Guage gear.
First photo if field guage.



No/Go



Then the one we look for, the "Go" guage. Bout time huh?



- - - Updated - - -

This was the fun part and a learning experience to boot.
Used 20 rnds of Hornady 450 Bushmaster 250 gr FTX for my first date with thumper. Not disappointed , but a little surprised that the recoil was not as significant as expected. That's a good thing.
As with every XM21 I have put together , the scope I moved to this new rifle was dead on for windage but about 8" low at a hundred after firing M118 in the last rifle it was mounted on.
4 shots got me up into the 4" siting box without a problem where it did a reasonable 2" group.
Target photo is of the second target. Hits started at the top and walked down 5" as the barrel carboned up and the lead slowed down. The shot 1.5" to the right was on the 7th shot and called. So it appears that the bushmaster likes a clean barrel, as least to start with. We will see how it works after breakin.
So, a 5" drop in elevation after 20 rnds rapid fire ain't that bad for a supposed hunting rifle.

[Sunray]

Hard to tell even with the giant pictures. Might be the angle. Does that bolt close completely on the No-Go? If so, it means whoever put the barrel on really didn't know what he was doing. Isn't unsafe, but a good smithy would have fitted the barrel so it does not close on the No-Go, not the Field.
Kind of surprised that wee case cycles properly being close to a half inch shorter than the .308.

[nf1e]

Bolt only closes completely on Go guage. No go is up 1/8 or more and field is way up same as I set up my .308s. The guy that put mine together knows his stuff. I put the trust but verify in there because Ronald Regan was one of my heros and I always liked that statement.
Cycling doesn't seem to be effected by the shorter cartridge.

[Sunray]

"...No go is up 1/8 or more..." It's the picture. That's perfect. The operative word is 'completely'.
Not at all surprised the felt recoil is light. Isn't any with a .308 either.