BSA R10 MK2 precharged repeater: Part 4
by Tom Gaylord
Writing as B.B. Pelletier
BSA’s Mark 2 repeater has a rubber-covered beechwood stock.
This report covers:
- The day
- The rifle
- The test
- Start with JSB Exact Heavy
- Crosman Premier heavys
- H&N Baracuda Match with 4.50mm head
- Remove the silencer
- H&N Baracuda Match no silencer
- JSB Exact Heavy no silencer
- Crosman Premier Heavy no silencer
In yesterday’s report you learned that I also shot the BSA R10 Mark II at the 50-yard range last Friday. I took the three best pellets from the 25-yard test in Part 3 and I shot them both with and without the DonnyFL silencer, just to see if there was a difference.
As I mentioned yesterday, it was a cold Texas day with a light wind that blew from 5-10 mph. The range on which I shot is not only covered, it also has walls on both sides. Unfortunately the wind was at my back, and that produced swirling breezes downrange.
The rifle was still scoped with the Meopta MeoPro Optika6 3-18X56 scope that is the best optic I own. It’s mounted in SportsMatch Fully Adjustable Scope Rings that have allowed me to get it right on for droop compensation. It was shooting about two inches low at 50 yards with the 25-yard sight setting.
I shot from 50 yards off a sandbag rest. The rifle was rested directly on the sandbag. I shot 10-shot groups for each target.
I also tested each pellet both with the DonnyFL silencer installed and with it removed. When it was removed I put the BSA muzzle cap back on. The test began with the silencer installed.
Start with JSB Exact Heavy
I began the test with 10.34-grain JSB Exact Heavy pellets. Unfortunately I forgot to close the magazine retaining catch, so the first group was a loss.
The second group was fired with the magazine catch pulled back and 10 JSB pellets went into 1.459-inches at 50 yards. The group spread out a little, left and right and that’s the same thing Cloud9 was noticing with his RAW. That was the wind swirling downrange. At 25 yards indoors ten of these same pellets made a 0.40-inch group.
After seeing where this pellet landed I adjusted the scope up five clicks.
Crosman Premier heavys
The second pellet I tried was the 10.5-grain Crosman Premier. Ten of them went into a group that measured 1.449-inches between centers. The group is high enough but also moved to the right. I didn’t adjust the scope after seeing it, though, because pellets will go to different places on their own. At 25 yards indoors ten of these pellets made a 0.395-inch group.
H&N Baracuda Match with 4.50mm head
The last pellet I tested was the H&N Baracuda Match with a 4.50mm head. Ten of them went into 1.69-inches at 50 yards. At 25 yards indoors ten made a 0.346-inch group.
At 50 yards the R10 Mk II put 10 H&N Baracuda Match pellets with 4.50mm heads in a group that measures 1.69-inches between centers. It looks like 9 holes but I’m pretty sure the hole on the right side of the three at the left has two pellets through it.
Remove the silencer
Now I dialed the scope down five clicks. I also took the DonnyFL silencer off and replaced the BSA muzzle cap.
H&N Baracuda Match no silencer
Since the Baracuda Match tin was open I started with them. Ten of them went into a 1.961-inch group at 50 yards. It’s the largest group so far. The pellets also landed off to the left, which I assume is the result of removing the silencer.
JSB Exact Heavy no silencer
Next to be tried were ten JSB Exact Heavys with no silencer on the rifle. Ten pellets went into 1.53-inches at 10 meters. It’s a little larger group than the same pellet shot with the silencer on the rifle.
After this group I adjusted the scope down three clicks.
Crosman Premier Heavy no silencer
The last test was of Crosman Premier Heavys shot in the R10 with no silencer. Ten of them went into a 1.602-inch group that is larger than the one shot with the same pellet when the silencer was installed. They still went to the right of the aim point, just like they did when the silencer was installed.
This little test makes it look like the DonnyFL silencer bettered the groups a little. I don’t think that’s been proven. It might be more accurate to say the silencer did not adversely affect the groups.
The breeze we had caused some of the horizontal spreading. I tried to wait out the wind, but that was nearly impossible. Let’s just say I waited until it was as calm as it was going to get and then I shot as fast as I could before the wind picked up again.
I’m disappointed by today’s results. I had hoped for at least one group that was smaller than an inch. Cloud9 was getting 5-shot groups of sub one-quarter-inches, though he had some problems with the wind, too.
Will I test this rifle again? If I do it will be with a host of different pellets because these don’t seem to be the right ones for 50 yards.